Claims:
1. A circuit breaker comprising:
a fixed terminal (1) coupled to a first breaker adaptor (3a); and
a moving terminal (2) coupled to a second breaker adaptor (3b);
wherein the fixed terminal (1) comprises a first conducting component (9) mounted thereon and has at least one of its end protruding outside a housing chamber of the circuit breaker to connect with the first breaker adaptor (3a); and
wherein the moving terminal (2) comprises a second conducting component (8) mounted thereon and has at least one of its end protruding outside the housing chamber of the circuit breaker to connect with the second breaker adaptor (3b).

2. The circuit breaker as claimed in claim 1, wherein the first breaker adaptor (3a) and the second breaker adaptor (3b) connect to a cradle of the circuit breaker.

3. The circuit breaker as claimed in claim 1, wherein the second breaker adaptor (3b) along with a current transformer is mounted on second conducting component (8).

4. The circuit breaker as claimed in claim 1, wherein each of said end associated with said first conducting component (8), said end associated with said second conducting component (8), the first breaker adaptor (3a) and the second breaker adaptor (3b) comprises coplanar rear ends, the coplanar rear ends enables insertion of a cradle side spring loaded electrical contacts inside each of the first breaker adaptor (3a) and the second breaker adaptor (3b).

5. The circuit breaker as claimed in claim 1, wherein the moving terminal (2) further comprises: a flexible metallic wire strands (5), a current carrying blades (6) and a contact tips or buttons (7) attached to the current carrying blades (6), and wherein the flexible metallic wire strands (braids) (5) are adapted to allow rotation of the current carrying blades (6) and the contact tips or buttons (7) about a pivot point thereby at least connecting or disconnecting the moving terminal (2) with the fixed terminal (1).

6. The circuit breaker as claimed in claim 1, wherein the fixed terminal (1) further comprises: a contact tip or button (10).

7. The circuit breaker as claimed in claim 1, wherein each of the first breaker adaptor (3) and the second breaker adaptor (3b) are metallic conductors/components allowing connection to the cradle of the circuit breaker.

8. The circuit breaker as claimed in claim 1, wherein each of the first conducting component (9) and the second conducting component (8) are horizontal metallic components.

9. The circuit breaker as claimed in claim 8, wherein the first breaker adaptor (3) is mounted on the first conducting component (9) in vertical direction and the second breaker adaptor (3) is mounted on the second conducting component (8) in vertical direction.

10. The circuit breaker as claimed in claim 9, wherein the vertical direction mounting of each of the first breaker adaptor (3) and the second breaker adaptor (3) is adapted to change the current path direction from horizontal to vertical, thereby providing better convection and limiting temperature rise.

, Description:
TECHNICAL FIELD
[0001] The present disclosure relates to circuit breaker, and more specifically relates to, a construction and joining of terminals of the circuit breaker where in use of current carrying metal is optimized providing adequate cross section for the rated current to improve the thermal performance.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Electrical switching apparatus, such as circuit breakers, provide protection for electrical systems from electrical fault conditions such as, for example, current overloads, short circuits, abnormal voltage and other fault conditions. Typically, circuit breakers include an operating mechanism which opens electrical contact assemblies to interrupt the flow of current trough the conductors of an electrical system in response to such fault conditions. A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overcurrent, typically resulting from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
[0004] Circuit breaker is a switching device designed to make, carry and break the circuit. A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overcurrent, typically resulting from an overload or short circuit. Circuit breakers are generally installed to protect equipment from overcurrent (than its rated current) situations, for example, when a short circuit or ground fault occurs in an electrical supply conductor. Upon the occurrence of any such overcurrent condition, electrical contacts inside circuit breaker get opened, and stop supply of electrical current to equipment. Designs for circuit breakers generally include accommodations for both high quiescent currents and high withstand currents. To maintain a high withstand current rating, the contacts must be locked closed at the current withstand rating and be able to withstand the large electrodynamics repulsion forces generated by the current flow.
[0005] The main contact system of circuit breaker consists of a moving terminal and a fixed terminal. The contacts remain closed when rated current flows through the system under normal operating conditions. These contacts are opened by means of the suitable mechanism to disconnect load from power supply. Fixed contacts and moving contacts are metallic components which carry rated current and facilitate electrical separation on tripping the switchgear. These power contacts both moving and fixed contacts are designed so as to limit heat losses of system.
[0006] The moving terminal and fixed terminal carry maximum up to rated operational current for which it is designed; during normal operating conditions. During operational life of the switching device, heat will be generated due to the inherent losses. Necessary cross section of terminals limits the temperature rise in the circuit breaker. Circuit breakers are available in two types, fixed version and draw-out version. In fixed version, termination is directly done on the fixed and moving terminals through suitable means. In draw-out version, termination is done on cradle, which can be disconnected or connected to fixed and moving terminals by suitable means. Existing design has special metallic component here termed as breaker adaptor mounted on fixed and moving terminal by suitable means which then connects to cradle of the draw-out ACB. End user connects the supply and load to cradle by suitable means. Draw-out version facilitates maintenance of breaker without shut-down of the power system.
[0007] Efforts have been made in related art to address above stated problem by using improved circuit breaker system. An example of such circuit breaker system is recited in a United States Patent 8592709, entitled “Current path arrangement for a circuit breaker”. The patent discloses circuit breaker current paths for providing additional current capability. The patent discloses an apparatus includes an enclosure, a plurality of circuit breaker sub poles, each enclosed within a chamber of the enclosure, and a plurality of arc chutes, each installed on one of the chambers enclosing the circuit breaker sub poles.
[0008] However, existing design or prior arts of fixed and moving terminal assembly and breaker adaptor include metallic terminal to carry current. These metallic terminals have variable thickness and special polygonal shape. Variable thickness is required to accommodate other components like contact strip (joined onto top terminal), plurality of metallic wire strands onto bottom terminal and also to optimize the copper material. Further, fixed and moving terminals are horizontal or flat inside breaker housing chamber to accommodate contact buttons and contact strip which help in achieving function of extinguishing arc in the air circuit breaker. Flat horizontal terminals inside housing chamber are designed so as to form vertical profile outside housing chamber towards rear side (away from operator) for improved convection. This conversion requires special shape of metallic component or specialized manufacturing process. The variable thickness is achieved through specialized manufacturing processes like extrusion or forging. Furthermore, in the prior-art, there is a requirement of excess material consumption due to profile change requirement from horizontal to vertical. In addition, conventional design requires specialized manufacturing processes like extrusion for terminal manufacturing, so that component cost increases. Also vertical profile of terminal and breaker adaptor doubles the thickness in previous arts. Thickness does not play role in limiting heat losses as it does not lower down current density in that area.
[0009] Whereas there is certainly nothing wrong with existing techniques or circuit breaker system, nonetheless, there still exists a need to provide an efficient, effective, reliable, and improved design of fixed and moving terminal assembly, and breaker adaptor (a component that connects to cradle) of air circuit breaker. Further, there is also a need of fixed terminal and moving terminal to be manufactured using simplified manufacturing process to minimize component costs. There is a dire need to eliminate requirement of an additional vertical profile provided, in conventional art, on fixed and moving terminal for conversion of current path from horizontal shape to vertical shape for better convection. Also there is a need to reduce thickness in vertical areas and reduce lengths of the fixed and moving terminal assembly than conventional art so as to minimize heat losses.
[00010] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[00011] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about”. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[00012] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00013] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00014] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

OBJECTS OF THE INVENTION
[00015] An object of the present disclosure is to provide a circuit breaker with improved design of fixed terminal and moving terminal.
[00016] Another object of the present disclosure is to provide a fixed terminal, a moving terminal and breaker adaptor where in breaker adaptor is integrated in horizontal plate of fixed and moving terminal by suitable means.
[00017] Another object of the present disclosure is to provide an improved design of fixed and moving terminal assembly and breaker adaptor that connects to cradle of air circuit breaker.
[00018] Another object of the present disclosure is to provide a simplified manufacturing process to manufacture a fixed terminal and moving terminal.
[00019] Another object of the present disclosure is to provide optimized material content and simplified manufacturing process for manufacturing these components and still achieves variable thickness at different surfaces of these components.
[00020] Another object of the present disclosure is to reduce the current path length of breaker thus reducing the heat losses of system and limit temperature rise under normal operating conditions.
[00021] Another object of the present disclosure is to provide variable thickness of conductive material facilitates optimum material cost.
[00022] Another object of the present disclosure is to provide higher thickness of conductive material near heat generating source reduce the temperature rise.
[00023] Another object of the present disclosure is to provide construction and joining of terminals of the circuit breaker where in use of current carrying metal is optimized providing adequate cross section for the rated current to improve the thermal performance.
[00024] Another object of the present disclosure is to provide an arrangement wherein current transformer (CT) height or width can be reduced as it can be mounted before mounting the breaker adaptor which results in better accuracy of current transformer and also reduction in depth of current transformer as available height for turns is more.
[00025] Another object of the present disclosure is to provide an arrangement where in variable thickness horizontal and vertical pieces of the current path can be connected without deploying costly manufacturing techniques.
[00026] Another object of the present disclosure is to provide an arrangement wherein a horizontal terminal is directly connected to the breaker adaptor thereby optimizing the copper consumption and reducing cost for better thermal performance.
[00027] Another object of the present disclosure is to provide an arrangement where an anti-rotation square slot is used to house the nut which is used for assembly friendly connection between terminal and breaker adaptor.

SUMMARY
[00028] The present disclosure relates to circuit breaker, and more specifically relates to, a construction and joining of terminals of the circuit breaker where in use of current carrying metal is optimized providing adequate cross section for the rated current to improve the thermal performance.
[00029] Embodiments of the present disclosure provide an efficient, effective, reliable, improved circuit breaker. Further, the present disclosure provides the use of optimized material content and simplified manufacturing process for manufacturing fixed terminal and moving terminal and still achieves variable thickness at different surfaces of these components.
[00030] Accordingly, an aspect of the present disclosure relates to a circuit breaker. In an aspect, the circuit breaker can include a fixed terminal that can be coupled to a first breaker adaptor and a moving terminal can be coupled to a second breaker adaptor. In another aspect, the fixed terminal can include a first conducting component mounted thereon and has at least one of its ends protruding outside a housing chamber of the circuit breaker to connect with the first breaker adaptor. In another aspect, the moving terminal can include a second conducting component mounted thereon and has at least one of its end protruding outside the housing chamber of the circuit breaker to connect with the second breaker adaptor.
[00031] In an aspect, the first breaker adaptor and the second breaker adaptor can connect to a cradle of the circuit breaker.
[00032] In an aspect, the second breaker adaptor (3b) along with a current transformer is mounted on second conducting component..
[00033] In an aspect, the end associated with said first conducting component, the end associated with said second conducting component, the first breaker adaptor and the second breaker adaptor can include coplanar rear ends, the coplanar rear ends enables insertion of a cradle side spring loaded electrical contacts inside each of the first breaker adaptor and the second breaker adaptor.
[00034] In an aspect, the moving terminal further can include flexible metallic wire strands, current carrying blades and a contact tips or buttons attached to the current carrying blades. In another aspect, the flexible metallic wire strands (braids) can be adapted to allow rotation of the current carrying blades and the contact tips or buttons about a pivot point thereby at least connecting or disconnecting the moving terminal with the fixed terminal.
[00035] In an aspect, the fixed terminal further can include a contact tip or button.
[00036] In an aspect, each of the first breaker adaptor and the second breaker adaptor can be metallic conductors/components allowing connection to the cradle of the circuit breaker.
[00037] In an aspect, each of the first conducting component and the second conducting component can be horizontal metallic components.
[00038] In an aspect, the first breaker adaptor can be mounted on the first conducting component in vertical direction. In another aspect, the second breaker adaptor can be mounted on the second conducting component in vertical direction.
[00039] In an aspect, the vertical direction mounting of each of the first breaker adaptor and the second breaker adaptor can be adapted to change the current path direction from horizontal to vertical, thereby providing better convection and limiting temperature rise.
[00040] In contrast to the conventional circuit breakers, the present disclosure provides an improved design of fixed terminal assembly, moving terminal assembly and breaker adaptor (a component that connects to cradle) of air circuit breaker. Fixed terminal and moving terminal are horizontal metallic components manufactured using simplified manufacturing process. Use of simplified process reduces the cost of components. Further, in contrast to the existing circuit breakers, the present invention provides the breaker adaptor which is mounted directly on horizontal fixed and moving terminal which enables to convert the horizontal connection to vertical connection. Such vertical connection provides better convection and hence limits the temperature rise. Furthermore, in contrast to the existing circuit breaker system, the present invention completely eliminates the requirement of an additional vertical profile provided in conventional art which was provided on fixed and moving terminal. The present invention also optimizes the copper consumption, reduces current path length and in turn resistance of current path and hence reduces the cost of components.
[00041] Further, in contrast to the existing conventional circuit breaker system, the present invention provides a current transformer (CT) that can be mounted before mounting the breaker adaptors by virtue of which the height of CT can be optimized. This reduces the air gap between CT and current carrying horizontal plate of bottom terminal. This improves the CT accuracy and further width of the CT and hence bottom terminal can be reduced as more height is available for equal number of turns. As width of the current path is reduced, thermal or heat losses are reduced in the breaker. Furthermore, the present invention provides manufacturing processes to minimize component costs. Also thickness in vertical area is halved than previously disclosed arts. Reduced length minimizes heat losses. Ease of CT insertion in the disclosed patent facilitates CT to have low height and minimum air gap w.r.t conductor profile. This improves CT accuracy.
[00042] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[00043] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure, and wherein:
[00044] FIGs. 1-2 illustrate an isometric view of the assembly displaying the variable thickness horizontal terminal and vertical breaker adaptor connected by means of a screw-nut arrangement, in accordance with an exemplary embodiment of the present disclosure.
[00045] FIGs. 3-4 illustrate a slot to accommodate nut for connection breaker adaptor with the means of a screw, in accordance with an exemplary embodiment of the present disclosure.
[00046] FIGs. 5-6 illustrate a bottom terminal using particular arrangement, in accordance with an exemplary embodiment of the present disclosure.
[00047] FIG. 7 illustrates an isometric view of both top and bottom terminal connected using particular arrangement, in accordance with an exemplary embodiment of the present disclosure.
[00048] FIG. 8 illustrates side view of both top and bottom terminal connected using particular arrangement, in accordance with an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION
[00049] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[00050] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[00051] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00052] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
[00053] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[00054] All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00055] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[00056] The present disclosure relates to circuit breaker, and more specifically relates to, construction and joining of terminals of the circuit breaker where in use of current carrying metal is optimized providing adequate cross section for the rated current to improve the thermal performance.
[00057] Embodiments of the present disclosure provide an efficient, effective, reliable, improved circuit breaker. Further, use of optimized material content and simplified manufacturing process for manufacturing fixed terminal and moving terminal and still achieves variable thickness at different surfaces of these components.
[00058] Accordingly, an aspect of the present disclosure relates to a circuit breaker. In an aspect, the circuit breaker can include a fixed terminal can be coupled to a first breaker adaptor and a moving terminal can be coupled to a second breaker adaptor. In another aspect, the fixed terminal can include a first conducting component mounted thereon and has at least one of its ends protruding outside a housing chamber of the circuit breaker to connect with the first breaker adaptor. In another aspect, the moving terminal can include a second conducting component mounted thereon and has at least one of its ends protruding outside the housing chamber of the circuit breaker to connect with the second breaker adaptor.
[00059] In an aspect, the first breaker adaptor and the second breaker adaptor can connect to a cradle of the circuit breaker.
[00060] In an aspect, the second breaker adaptor (3b) along with a current transformer is mounted on second conducting component..
[00061] In an aspect, the end associated with said first conducting component, the end associated with said second conducting component, the first breaker adaptor and the second breaker adaptor can include coplanar rear ends, the coplanar rear ends enables insertion of a cradle side spring loaded electrical contacts inside each of the first breaker adaptor and the second breaker adaptor.
[00062] In an aspect, the moving terminal further can include flexible metallic wire strands, current carrying blades and a contact tips or buttons attached to the current carrying blades. In another aspect, the flexible metallic wire strands (braids) can be adapted to allow rotation of the current carrying blades and the contact tips or buttons about a pivot point thereby at least connecting or disconnecting the moving terminal with the fixed terminal.
[00063] In an aspect, the fixed terminal further can include a contact tip or button.
[00064] In an aspect, each of the first breaker adaptor and the second breaker adaptor can be metallic conductors/components allowing connection to the cradle of the circuit breaker.
[00065] In an aspect, each of the first conducting component and the second conducting component can be horizontal metallic components.
[00066] In an aspect, the first breaker adaptor can be mounted on the first conducting component in vertical direction. In another aspect, the second breaker adaptor can be mounted on the second conducting component in vertical direction.
[00067] In an aspect, the vertical direction mounting of each of the first breaker adaptor and the second breaker adaptor can be adapted to change the current path direction from horizontal to vertical, thereby providing better convection and limiting temperature rise.
[00068] In contrast to the conventional circuit breakers, the present disclosure provides an improved design of fixed terminal assembly, moving terminal assembly and breaker adaptor (a component that connects to cradle) of air circuit breaker. Fixed terminal and moving terminal are horizontal metallic components manufactured using simplified manufacturing process. Use of simplified process reduces the cost of components. Further, in contrast to the existing circuit breakers, the present invention provides the breaker adaptor which is mounted directly on horizontal fixed and moving terminal which enables to convert the horizontal connection to vertical connection. Such vertical connection provides better convection and hence limits the temperature rise. Furthermore, in contrast to the existing circuit breaker system, the present invention completely eliminates the requirement of an additional vertical profile provided in conventional are which was provided on fixed and moving terminal. The present invention also optimizes the copper consumption, reduces current path length and in turn resistance of current path and hence reduces the cost of components.
[00069] Further, in contrast to the existing conventional circuit breaker system, the present invention provides a current transformer (CT) that can be mounted before mounting the breaker adaptors by virtue of which the height of CT can be optimized. This reduces the air gap between CT and current carrying horizontal plate of bottom terminal. This improves the CT accuracy and further width of the CT and hence width of bottom terminal can be reduced as more height is available for equal number of turns. As width of the current path is reduced, thermal or heat losses are reduced in the breaker. Furthermore, the present invention provides use of simple manufacturing processes to minimize component costs. Also thickness in vertical area is halved than previously disclosed arts. Reduced length minimizes heat losses. Ease of CT insertion before breaker adaptor in the disclosed patent facilitates CT to have low height and minimum air gap w.r.t conductor profile. This improves CT accuracy.
[00070] FIGs. 1-2 illustrate an isometric view of the assembly displaying the variable thickness horizontal terminal and vertical breaker adaptor connected by means of a screw-nut arrangement, in accordance with an exemplary embodiment of the present disclosure. FIG.s 1-2 depicts a second conducting component or metallic conducting component (8) can be mounted thereon and has at least one of its ends protruding outside the housing chamber of the circuit breaker to connect with the second breaker adaptor (3b). In an exemplary embodiment, the second breaker adaptor (3b) can connect to a cradle of the circuit breaker. In another exemplary embodiment, the second conducting component 8 can connect with the second breaker adaptor (3b) via a current transformer. In another exemplary embodiment, the second breaker adaptor (3b) can be metallic conductors/components allowing connection to the cradle of the circuit breaker.
[00071] FIGs. 3-4 illustrate a slot to accommodate nut for connection breaker adaptor with the means of a screw, in accordance with an exemplary embodiment of the present disclosure. FIGs. 3-4 illustrate use of a slot to accommodate nut which is further used to connect breaker adaptor with the means of a screw (4). The square slot can prevent the rotation of nut (4) thereby reducing assembly effort. In an embodiment, slots provided in thickness of flat terminals facilitate in accommodating hardware (11) for conventional fixing. This requires no specialized manufacturing process. Nuts or any other conventional fixing hardware (4) can get inserted in the slots to fix or join terminal and breaker adaptors. In an exemplary embodiment, anti-rotation square slot can be used to house the nut (4) which is used for assembly friendly connection between terminal and breaker adaptor.
[00072] FIGs. 5-6 illustrate a bottom terminal with the complete pole assembly using particular arrangement, in accordance with an exemplary embodiment of the present disclosure.
[00073] FIG. 7 illustrates an isometric view of both top and bottom terminal connected using particular arrangement, in accordance with an exemplary embodiment of the present disclosure. In an embodiment, the moving terminal (2) further can include a flexible metallic wire strands (5), a current carrying blades 6 and a contact tips or buttons (7) attached to the current carrying blades (6), and wherein the flexible metallic wire strands (braids) (5) can be adapted to allow rotation of the current carrying blades (6) and the contact tips or buttons (7)) about a pivot point thereby at least connecting or disconnecting the moving terminal 2 with the fixed terminal (1). During normal operating condition, fixed terminal (1) and moving terminals (2) can be connected making the circuit close. As shown in FIG. 7 the first breaker adaptor (3a) and the second breaker adaptor (3b) can connect to a cradle of the circuit breaker.
[00074] FIG. 8 illustrates side view of both top and bottom terminal connected using particular arrangement, in accordance with an exemplary embodiment of the present disclosure. As shown in FIG. 8, the fixed terminal (1) can be coupled to the first breaker adaptor (3a), and the moving terminal (2) can be coupled to a second breaker adaptor (3b). The fixed terminal (1) can include a first conducting component (9) mounted thereon and has at least one of its end protruding outside a housing chamber of the circuit breaker to connect with the first breaker adaptor (3a). The moving terminal (2) can include a second conducting component (8) mounted thereon and has at least one of its end protruding outside the housing chamber of the circuit breaker to connect with the second breaker adaptor (3b).
[00075] As shown in FIG. 8, the moving terminal (2) further can include a flexible metallic wire strands (5), a current carrying blades (6) and a contact tips or buttons (7) attached to the current carrying blades (6), and wherein the flexible metallic wire strands (braids) (5) can be adapted to allow rotation of the current carrying blades (6) and the contact tips or buttons (7)) about a pivot point thereby at least connecting or disconnecting the moving terminal (2) with the fixed terminal (1). FIG. 8 illustrates the first conducting component or metallic conducting component (9) and the second conducting component or metallic conducting component (8) can be horizontal metallic components.
[00076] In an embodiment, circuit breakers are available in two types, fixed version and Draw-out version. In fixed version, termination is directly done on vertical profiles of fixed and moving terminals through suitable means. In draw-out version, termination is done on cradle (not shown in image), which can be disconnected or connected to fixed terminal (1) and moving terminals (2) by suitable means. Metallic component hereafter termed as breaker adaptor (3) can be mounted on fixed terminal (1) and moving terminal (2) by suitable means which then connects to cradle of draw-out switchgear. Operator connects supply and load to cradle by suitable means. Draw-out version facilitates maintenance of breaker without shut-down of the power system.
[00077] In an embodiment, fixed version can include the fixed terminal (1) and moving terminal assembly (2). Moving terminal (2) can include metallic conducting component (8), flexible metallic wire strands (braids) (5), current carrying blades (6) and contact tips or buttons (7) attached to blades. Fixed terminal can include the metallic conducting component (9) and contact tip or button (10). Flexible metallic wire strands (5) can allow rotation of blades (6) and button (7) about the pivot point thus connecting or disconnecting moving terminal (2) with fixed terminal assembly (1).
[00078] In an embodiment, during normal operating condition, fixed terminal (1) and moving terminals (2) can be connected making the circuit close. During fault condition, moving terminal (2) can be rotated by suitable means which creates gap between the fixed (1) and moving terminal assembly (2) thus disconnecting the circuit. A metallic component hereafter called as breaker adaptor (3) can be mounted on the vertical surface of the fixed terminal (1) and moving terminal (2) in previously disclosed arts. The breaker adaptor 3 then connects to cradle of draw out version of circuit breaker by suitable means.
[00079] In an embodiment, the present invention relates to the fixed terminal (1) and moving terminal assembly (2) and breaker adaptor (3) of circuit breaker. In present invention, the fixed terminal (1) can be horizontally mounted terminal (9) inside housing chamber. It is fixed inside housing by using conventional means. Other end protruding outside housing chamber through rear end can be connected with breaker adaptor (3). Breaker adaptor (3) can be formed using conventional manufacturing processes. Breaker adaptor (3) can be fixed with horizontal rear end of fixed terminal (9) with help of conventional means but not limited to bolts 4. Assembly of terminal and breaker adaptor (3) can eliminate requirement of vertical profile which was part of earlier disclosed or practiced concepts or designs. In another embodiment, moving terminal (2) can be flat horizontal terminal (8) similar in design to abovementioned top fixed terminal (8). It is mounted in lower half of housing chamber using conventional fixing means. Rear end of this terminal protrudes outside housing from rear end. Breaker adaptor (3) can be connected or fixed on to rear flat end of this terminal with help of conventional means like bolts but not limited to bolts (4). Similar to top fixed terminal assembly (1), bottom terminal assembly (made up of bottom terminal and breaker adaptor) (2) can eliminate requirement of vertical profile of bottom terminal. In another embodiment, current transformer (CT) can be inserted around flat horizontal bottom terminal (8) and then breaker adaptor (3) can be fixed with terminal (8). This facilitates easy assembly of CT on terminal and also reduces height of CT. Reduced or minimum air gap improves CT accuracy than previously disclosed inventions. Both top terminal (1) and bottom terminals (2) and breaker adaptors (3) can have coplanar rear ends. Thus they help in insertion of cradle side spring loaded electrical contacts inside breaker adaptors (3). Slots provided in thickness of flat terminals facilitate in accommodating hardware (11) for conventional fixing. This requires no specialized manufacturing process. Nuts or any other conventional fixing hardware can get inserted in the slots to fix or join terminal and breaker adaptors.
[00080] The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.
[00081] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the appended claims.
[00082] While embodiments of the present disclosure have been illustrated and described, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the scope of the disclosure, as described in the claims.
[00083] In the description of the present specification, reference to the term "one embodiment," "an embodiments", "an example", "an instance", or "some examples" and the description is meant in connection with the embodiment or example described The particular feature, structure, material, or characteristic included in the present invention, at least one embodiment or example. In the present specification, the term of the above schematic representation is not necessarily for the same embodiment or example. Furthermore, the particular features structures, materials, or characteristics described in any one or more embodiments or examples in proper manner. Moreover, those skilled in the art can be described in the specification of different embodiments or examples are joined and combinations thereof.
[00084] All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
[00085] Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
[00086] The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
[00087] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[00088] The present disclosure a circuit breaker with improved design of fixed terminal and moving terminal.
[00089] The present disclosure provides a fixed terminal, a moving terminal and breaker adaptor where in breaker adaptor is integrated in horizontal plate of fixed and moving terminal by suitable means.
[00090] The present disclosure provides provide an improved design of fixed and moving terminal assembly and breaker adaptor that connects to cradle of air circuit breaker.
[00091] The present disclosure provides a simplified manufacturing process to manufacture a fixed terminal and moving terminal.
[00092] The present invention provides optimized material content and simplified manufacturing process for manufacturing these components and still achieves variable thickness at different surfaces of these components.
[00093] The present disclosure reduces the current path length of breaker thus reducing the heat losses of system and limit temperature rise under normal operating conditions.
[00094] The present disclosure provides variable thickness of conductive material facilitates optimum material cost.
[00095] The present disclosure provides higher thickness of conductive material near heat generating source reduce the temperature rise.
[00096] The present disclosure provides construction and joining of terminals of the circuit breaker where in use of current carrying metal is optimized providing adequate cross section for the rated current to improve the thermal performance.
[00097] The present disclosure provides an arrangement wherein current transformer (CT) height or width can be reduced as it can be mounted before mounting the breaker adaptor which results in better accuracy of current transformer and also reduction in depth of current transformer as available height for turns is more.
[00098] The present disclosure provides an arrangement where in variable thickness horizontal and vertical pieces of the current path can be connected without deploying costly manufacturing techniques.
[00099] The present disclosure provides an arrangement wherein a horizontal terminal is directly connected to the breaker adaptor thereby optimizing the copper consumption and reducing cost for better thermal performance.
[000100] The present disclosure provides an arrangement where an anti-rotation square slot is used to house the nut which is used for assembly friendly connection between terminal and breaker adaptor.