Description:A MINIATURE CIRCUIT BREAKER WITH SHORT CIRCUIT FAULT INDICATION

TECHNICAL FIELD
[0001] The present disclosure relates generally to a miniature circuit breaker and more particularly to a miniature circuit breaker capable of short circuit fault indication.

BACKGROUND
[0002] A miniature circuit breaker (MCB) is a device utilized for the purpose of connecting or disconnecting circuitry in small power equipment, commonly found indoors in buildings and factories. Its primary function is to safeguard circuits from abnormal currents, including overloads and short circuits.
[0003] Referring to Figure 1 illustrating a miniature circuit breaker in accordance with existing art. The miniature circuit breaker 100 is a fully enclosed electromagnetic device housed within a molded insulating material. Its purpose is to automatically open the circuit by switching off when the current flowing through it surpasses a predetermined threshold value for which it is configured.
[0004] The miniature circuit breaker 100 primarily comprises a coil 101, an indicator 102, a knob 103, a tripping latch 104, a tripping bar 105 and a bimetal with pointer 106. The coil 101 has a plunger 101a adapted to move towards and/or away from the coil 101. The coil 101 is placed so that during short circuit fault the magneto-motive force of the coil 101 causes its plunger 101a to hit the tripping latch 104 and make the tripping latch 104 to be displaced. Additionally, in the case of an overload fault, the bimetal pointer 106 moves away from the coil 101, causing the tripping latch 104 to unlatch. As a result, in the event of short circuit fault or overload fault, the tripping latch 104 rotates the knob 103 from an ON position to a OFF position.
[0005] The indicator 102 is connected to the plunger 101a of the coil 101 via a moving arm 107. This arrangement enables the movement of the coil's plunger 101a during a fault event to be transmitted to the indicator 102, thus providing a true indication to the user that a fault has occurred and the miniature circuit breaker 100 has been tripped to the OFF position. To reset the miniature circuit breaker 100, the user can rotate the knob 103 from the OFF position to the ON position, thereby resetting the tripping latch 104.
[0006] In the current state of the art, the miniature circuit breaker 100 is equipped with a single indicator 102 that can only provide information about whether the miniature circuit breaker 100 is in the ON or OFF state. However, it lacks the capability to indicate any specific fault or fault condition beyond the basic ON/OFF status. Consequently, this limited design fails to effectively indicate the type of fault that has occurred. Thus, the user lacks information regarding the cause of the fault and the appropriate corrective measures to address it.
[0007] The most common cause of miniature circuit breaker tripping is due to an overload. Circuit boards are responsible for supplying electricity to various circuits, enabling the distribution of power. When an electrical appliance draws more power from a circuit than its capacity can handle, an overload situation arises. It is advisable to assess the number of high-power consuming devices that are being used simultaneously.
[0008] Short circuit commonly arises when a "neutral wire" and a "hot wire" make direct contact, resulting in an excessive surge of current flowing through the circuit. This current typically exceeds the circuit's capacity, causing a short circuit, often accompanied by a distinct burning smell. In case of short circuit, it is advisable to check for loose connections or faulty wirings to avoid any disaster.
[0009] Thus, to take an informed decision, it is essential to know the cause/ kind of fault. Since the existing art only have one indicator, it is not possible to indicate all the four condition, namely, short circuit, overload and ON and OFF condition.
[0010] In another existing art, a miniature circuit breaker has an indicator directly or indirectly linked to the movement of the knob. When a fault occurs, be it due to a short circuit or overload, the motion of the knob is transmitted to the indicator. However, these particular types of miniature circuit breakers are unable to accurately indicate fault condition in the event of knob locking as the functioning of knob is hindered. Therefore, these types of miniature circuit breakers lack the ability to provide true indication of the state of the miniature circuit breaker.
[0011] Accordingly, there is a need for a miniature circuit breaker which is capable of providing indication regarding short circuit fault. Further, there is a need for a miniature circuit breaker which are designed to provide true indication of the fault.

SUMMARY
[0012] This summary is provided to introduce concepts related to a miniature circuit breaker with short circuit fault indication. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0013] The present subject matter relates to a miniature circuit breaker with short circuit fault indication. The miniature circuit breaker comprises a coil, a first indicator, a slider and a second indicator. The coil is adapted to trip the miniature circuit breaker in event of short circuit. A plunger is positioned at the center of the coil adapted to move within the space of the coil. The first indicator is adapted to indicate ON-OFF state of the miniature circuit breaker. The first indicator is operatively connected to a first end of the plunger through a movable arm. The slider linked with the second end of the plunger through a plunger cap. The slider has a hollow channel which is adapted to accommodate a spring. The second indicator is adapted to indicate type of fault based on the indication of the first indicator. The second indicator has a first end having an indication section and a second end adapted to firmly engage with the spring in the slider in a manner that the movement of the second end of the plunger, in the condition of fault, is transmitted to the first end of the second indicator through the second end of the second indicator in connection with the spring of the slider.
[0014] In an aspect, the first indicator has a first end having an indication section and a second end adapted to firmly engage with the plunger through a moving arm in a manner that the movement of the plunger cap, in the condition of fault, is transmitted to the first end of the first indicator.
[0015] In an aspect, the indication section of the first indicator has a first indication color to indicate ON state and a second indication color to indicate OFF state of the miniature circuit breaker.
[0016] In an aspect, the indication section of the second indicator has a third indication color and a fourth indication color.
[0017] In an aspect, the miniature circuit breaker has a tripping latch, engaged with a knob, adapted to trip the miniature circuit breaker in fault condition.
[0018] In an aspect, the tripping latch is triggered by second end of the plunger when short circuit fault occurs.
[0019] In an aspect, the tripping latch is triggered by a bimetal with a pointer when overload fault occurs.
[0020] In an aspect, when short circuit fault occurs the plunger moves towards the coil shifting the second end of the plunger with the plunger cap towards the slider which in turn latch the second end of the second indicator resulting in shifting of color of the indication section of the second indicator from third indication color to fourth indication color.
[0021] In an aspect, when the short circuit fault occurs the plunger moves towards the coil resulting in shifting of color of indication section of the first indicator from first indication color to second indication color.
[0022] In an aspect, when overload fault occurs the bimetallic pointer moves away from the coil unlatching the tripping latch resulting in shifting of color of the indication section of the first indicator section from first indication color to second indication color.
[0023] In an aspect, the first indicator and the second indicator is reset to normal operation after fault, by rotating the knob and performing resetting operation.
[0024] In an aspect, in reset operation the first indicator and the second indicator starts rotating back to respective normal operation positions and slider moves towards the plunger under the action of spring present in the slider.
[0025] To further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the scope of the present subject matter.
[0026] 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 FIGURES
[0027] The illustrated embodiments of the present disclosure will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and processes that are consistent with the subject matter as claimed herein, wherein:
[0028] FIG. 1 illustrates a miniature circuit breaker in accordance with existing art;
[0029] FIG. 2 illustrates sectional view of an exemplary miniature circuit breaker that can be utilized to implement one or more exemplary embodiments of the present disclosure.
[0030] FIG. 3 illustrates sectional view of an exemplary miniature circuit breaker showing second indicator that can be utilized to implement one or more exemplary embodiments of the present disclosure.
[0031] FIG. 4a, 4b and 4c illustrates sectional views of the exemplary miniature circuit breaker depicting stages of reset operation that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0032] FIG. 5a illustrates sectional views of the exemplary miniature circuit breaker in ON state that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0033] FIG. 5b illustrates sectional views of the exemplary miniature circuit breaker in OFF state that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0034] FIG. 5c illustrates sectional views of the exemplary miniature circuit breaker in short circuit fault state that can be utilized to implement one or more exemplary embodiments of the present disclosure; and
[0035] FIG. 6 illustrates sectional views of the exemplary miniature circuit breaker in ON state, OFF state and short circuit fault state that can be utilized to implement one or more exemplary embodiments of the present disclosure.
[0036] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION
[0037] A few aspects of the present disclosure are explained in detail below with reference to the various figures. Example implementations are described to illustrate the disclosed subject matter, not to limit its scope, which is defined by the claims. Those of ordinary skill in the art will recognize a number of equivalent variations of the various features provided in the description that follows.
Definitions
[0038] In the disclosure hereinafter, one or more terms are used to describe various aspects of the present disclosure. For a better understanding of the present disclosure, a few definitions are provided herein for better understating of the present disclosure.
[0039] “Coil” may be defined, in the context of the invention, as an electromagnetic trip coil that acts as a triggering mechanism to trip or open the contacts of the miniature circuit breaker.
[0040] “First Indicator” may be defined, in the context of the invention, as one of the two indicators which visually provides information about the status of the miniature circuit breaker. It is designed to help the user and technicians to easily identify the operating state of the miniature circuit breaker.
[0041] “Second Indicator” is defined, in the context of the invention, as one of the two indicators which visually provides information about the status of the miniature circuit breaker. It is designed to help the user and technicians to easily identify the short circuit fault in the miniature circuit breaker.
[0042] “Tripping Latch” may be defined, in the context of the invention, as a mechanical component responsible for tripping or opening the contacts of the miniature circuit breaker when a short circuit or overload condition occurs.
[0043] “Bimetal with a Pointer” may be defined, in the context of the invention, as a component used as thermal overload protection. The bimetal with a pointer detects and respond to excessive temperature rises caused by overloads in an electrical circuit.

EXEMPLARY IMPLEMENTATIONS
[0044] While the present disclosure may be embodied in various forms, there are shown in the drawings, and will hereinafter be described, some exemplary and non-limiting embodiments, with the understanding that the present disclosure is to be considered an exemplification of the invention and is not intended to limit the invention to the specific embodiments illustrated. Not all of the depicted components described in this disclosure may be required, however, and some implementations may include additional, different, or fewer components from those expressly described in this disclosure. Variations in the arrangement and type of the components may be made without departing from the scope of the claims as set forth herein.
[0045] Existing miniature circuit breakers are designed to indicate both the normal and fault conditions of a circuit. However, it is important to note that faults in the circuit can arise from various situations, including short circuits or overloads.
[0046] In order to prevent repeated tripping of the miniature circuit breaker, it is necessary to identify the root cause of the fault and take appropriate corrective measures. The repeated tripping of the miniature circuit breaker is an unwanted condition which may eventually lead to welding of contacts of the miniature circuit breaker.
[0047] In addition to this, some of the existing miniature circuit breaker does not show true indication as the indicator is directly or indirectly coupled to knob of the miniature circuit breaker as oppose to the tripping assembly. These kind of miniature circuit breakers have drawbacks as the indication provided by these kind of miniature circuit breakers may be faulty in the event of welding of contacts resulting from repeated tripping.
[0048] To solve the problems, a miniature circuit breaker is required which is capable of indicating true indication of short circuit fault.
[0049] In order to achieve this goal of indicating cause of fault, a miniature circuit breaker may be utilized. The miniature circuit breaker is described in more detail below.
[0050] FIG. 2 illustrates sectional view of an exemplary miniature circuit breaker that can be utilized to implement one or more exemplary embodiments of the present disclosure. The miniature circuit breaker 200 comprises a coil 201, a first indicator 202, a second indicator 203, a tripping latch 204, a tripping bar 205, a bimetal pointer 206 and a slider 212.
[0051] The coil 201, also referred to as the trip coil, is utilized to trigger the tripping mechanism of the miniature circuit breaker 200 during a short circuit fault. Positioned at the center of the coil 201 is a plunger 207, designed to move within the space between the coil 201. The plunger 207 has a first end 207a and a second end 205. The plunger 207 is positioned in a way that the first end 207a of the plunger 207 is in the proximity of the first indicator 202 and the second end 205 of the plunger 207 is in the proximity of the second indicator 203. The second end 205 of the plunger 207 is provided with a plunger cap 208. In an aspect, the second end 205 of the plunger 207 act as a tripping bar.
[0052] The first indicator 202 is provided in the miniature circuit breaker 200 to primarily indicate the ON state and OFF state of the miniature circuit breaker 200. The first indicator 202 has a first end 202a and a second end 202b. The first indicator 202 has an indication section 209 at the first end 202a. The indication section 209 has a first indication color to indicate ON state and a second indication color to indicate OFF state of the miniature circuit breaker 200. The second end 202b of the first indicator 202 is adapted to couple with the plunger 207. In an aspect, the second end 202b of the first indicator 202 is coupled to the plunger 207 through a movable arm 210. The second end 202b of the first indicator 202 is coupled to the plunger 207 of the coil 201 through the movable arm 210 in such a way that movement of the plunger 207 in the condition of fault is transmitted to the first end 202a of the first indicator 202. The transmitted movement to the indicator section 209 of the first indicator 202 shifts the indication from first indication color to second indication color.
[0053] The second indicator 203 is provided in the miniature circuit breaker 200 to primarily indicate the fault of the miniature circuit breaker 200, particularly, short circuit fault. The second indicator 203 has a first end 203a and a second end 203b (shown in Fig. 3). The second indicator 203 has an indication section 211 at the first end 203a. The indication section 211 has a third indication color and a fourth indication color to indicate short circuit fault in the miniature circuit breaker. The second end 203b of the second indicator 203 is adapted to engage with the plunger cap 208. In an aspect, the second end 203b of the second indicator 203 is coupled to the plunger cap 208 through the slider 212. The second end 203b of the second indicator 203 is coupled to the plunger cap 208 through the slider 212 in a way that movement of the plunger cap 208 in the condition of fault is transmitted to the first end 203a of the second indicator 203. The transmitted movement to the indicator section 211 of the second indicator 203 shifts the indication from third indication color to fourth indication color.
[0054] The tripping latch 204 is provided to trip the miniature circuit breaker 200 in the event of the fault condition. The bimetal with pointer 206 is provided in vicinity of the tripping latch 204. When an overload or excessive current flows through the circuit, it causes the bimetal with pointer 206 to heat up. As the temperature rises, the bimetal with pointer 206 bends due to the different expansion rates of its constituent metals. This bending motion is used to unlatch the tripping latch 204, which then opens the circuit and disconnects the power. By utilizing the bimetal pointer 206, the miniature circuit breaker 200 can effectively sense and respond to overcurrent/overload conditions, providing protection against electrical faults and preventing damage to the circuit and connected devices. When an overload fault occurs, the bimetallic pointer 206 will move apart from the coil 201, releasing the tripping latch 204. This action causes the color of the first indication section 209 to shift from the first indication color to the second indication color.
[0055] The plunger 207 with a coil 201 is used in a miniature circuit breaker 200 to provide the tripping mechanism for the miniature circuit breaker 200 in the event of short circuit fault. When a short circuit fault occurs, the current passing through the miniature circuit breaker 200 exceeds its rated value. The coil 201, also known as the trip coil, is energized by this excessive current. The energized coil 201 creates a magnetic field, which in turn attracts the plunger 207. The plunger 207 is positioned in such a way that it can move within the coil 201. When the coil 201 is energized, the magnetic force pulls the plunger 207 towards it. This movement of the plunger 207 is used to actuate the tripping latch 204 of the miniature circuit breaker 200. This action disconnects the power supply and protects the electrical system from further damage caused by the short circuit fault.
[0056] The miniature circuit breaker 200 is capable of indicating the ON state, the OFF state, the fault due to short circuit and the condition when the contacts got welded due to short circuit. If an overload fault occurs, only the first indicator 202 switches its indication from the first indication color to the second indication color, while the second indicator 203 remains unchanged. This indicates that a fault has occurred, but it is not a result of a short circuit. As a result, both the user and the technician can conclude that the fault is specifically an overload fault.
[0057] FIG. 3 illustrates sectional view of an exemplary miniature circuit breaker showing second indicator that can be utilized to implement one or more exemplary embodiments of the present disclosure. In the illustrated FIG. 3, only mechanism of second indicator 203 is depicted for simple understanding. As can be seen in the illustration, the first end 207a of the plunger is connected to a movable arm 210. The plunger cap 208 which is on the second end 205 of the plunger 207 is connected to the slider 212. The slider 212 has a hollow channel in between which is adapted to accommodate a spring 301. At one end of the spring 301, the second end 203b of the second indicator 203 is attached. In normal ON state or OFF state, the slider 212 and the second indicator 203 is in locked state under spring force. The indication section 211 of the second indicator 203 shifts from third indication color to fourth indication color and vice versa based on the movement of the plunger cap 208. After tripping of the miniature circuit breaker 200 due to short circuit fault or overload fault, the miniature circuit breaker 200 can be reset to ON state by manually switching the knob 302 in ON state.
[0058] FIG. 4a, 4b and 4c illustrates sectional views of the exemplary miniature circuit breaker depicting stages of reset operation that can be utilized to implement one or more exemplary embodiments of the present disclosure. Referring to FIG. 4a, in order to reset the miniature circuit breaker 200, the user can rotate the knob 302 from the OFF position 401 to the ON position 402, thereby initiating the reset of the tripping latch 204. The movement of the knob 302 from the OFF position 401 to the ON position 402 results in the derivation of both the first indicator 202 and the second indicator 203 from the tripping latch 204.
[0059] Now turning the attention to FIG. 4b, it could be observed that the first indicator 202 and the second indicator 203 begin rotating back to their original positions. Simultaneously, the slider 212 starts moving towards the plunger 207, driven by the force of the spring 301.
[0060] Lastly, referring to FIG. 4c, once the knob 302 reaches the ON state 402, the first indicator 202 and the second indicator 203 return to their original positions, indicating that the miniature circuit breaker 200 has been successfully reset. At this point, the miniature circuit breaker 200 resumes normal operation.
WORKING OF THE SUBJECT MATTER
[0061] FIGs. 5a, 5b and 5c illustrates sectional views of the exemplary miniature circuit breaker in ON state, OFF state and short circuit fault state that can be utilized to implement one or more exemplary embodiments of the present disclosure. Referring to FIG. 5a, the miniature circuit breaker 200 has its first indicator 202 indicating first indication color depicting ON state and the second indicator 203 indication third indication color depicting no fault state. The knob 302 of the miniature circuit breaker 200 is also positioned in ON state.
[0062] Now turning the attention to FIG. 5b which depicts the miniature circuit breaker 200 in OFF state. In the OFF state, the first indicator 202 switches to indicate second indicator color from the first indicator color. The second indicator 203 still indicate third indication color as there is no fault condition.
[0063] Lastly, referring to FIG. 5c which depicts the miniature circuit breaker 200 in trip condition, particularly, short circuit fault condition. In the event of short circuit, the plunger cap 208 moves away from the coil 201 shifting the second end 205 of the plunger 207 towards the slider 212 which in turn latch the second end 203b of the second indicator 203 resulting in shifting of color of the indication section 211 of the second indicator 203 from third indication color to fourth indication color. In the short circuit fault condition, the first indicator 202 switches the indicator from the first indication color to the second indication color. An exemplary scheme of conditions is shown in FIG. 6 below.
[0064] FIG. 6 illustrates sectional views of the exemplary miniature circuit breaker in ON state, OFF state and short circuit fault state that can be utilized to implement one or more exemplary embodiments of the present disclosure. The first indication color is red color, the second indication color is green color, the third indication color is white and the fourth indication color is yellow. The state of indication is as follow:
ON State: First Indicator: Red color
Second Indicator: White color
OFF State: First Indicator: Green color
Second Indicator: White color
Short Circuit State: First Indicator: Green color
Second Indicator: Yellow color
Contact Welded State: First Indicator: Red color
Second Indicator: Yellow color
ADVANTAGES
The miniature circuit breaker is capable of providing indication regarding short circuit fault. Further, the miniature circuit breaker is designed to provide true indication of the fault as switching the state of the first indicator and the second indicator is based on the actual switching mechanism of the miniature circuit breaker and not on the knob.
[0065] The above description does not provide specific details of the manufacture or design of the various components. Those of skill in the art are familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art are capable of choosing suitable manufacturing and design details.
[0066] Further, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[0067] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0068] It will be appreciated that variants of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
, C , Claims:We Claim:
1. A miniature circuit breaker (200) with short circuit fault indication, the miniature circuit breaker (200) comprises:
a coil (201) adapted to trip the miniature circuit breaker (200) in event of short circuit, wherein a plunger (207) is positioned at the center of the coil (201) adapted to move within the space of the coil (201);
a first indicator (202) adapted to indicate ON-OFF state of the miniature circuit breaker (200), wherein the first indicator (202) is operatively connected to a first end (207a) of the plunger through a movable arm (210);
a slider (212) linked with the second end (205) of the plunger (207) through a plunger cap (208), wherein the slider (212) has a hollow channel which is adapted to accommodate a spring (301); and
a second indicator (203) adapted to indicate type of fault based on the indication of the first indicator (202), wherein the second indicator (203) has a first end (203a) having an indication section (211) and a second end (203b) adapted to firmly engage with the spring (301) in the slider (212) in a manner that the movement of the second end (205) of the plunger (207), in the condition of fault, is transmitted to the first end (203a) of the second indicator (203) through the second end (203b) of the second indicator (203) in connection with the spring (301) of the slider (212).
2. The miniature circuit breaker (200) as claimed in claim 1, wherein the first indicator (202) has a first end (202a) having an indication section (209) and a second end (202b) adapted to firmly engage with the plunger (207) through a moving arm (210) in a manner that the movement of the plunger (207), in the condition of fault, is transmitted to the first end (202a) of the first indicator (202).
3. The miniature circuit breaker (200) as claimed in claim 1, wherein the indication section (209) of the first indicator (202) has a first indication color to indicate ON state and a second indication color to indicate OFF state of the miniature circuit breaker (200).
4. The miniature circuit breaker (200) as claimed in claim 1, wherein the indication section (211) of the second indicator (203) has a third indication color and a fourth indication color.
5. The miniature circuit breaker (200) as claimed in claim 1, wherein the miniature circuit breaker (200) has a tripping latch (204), engaged with a knob (302), adapted to trip the miniature circuit breaker (200) in fault condition.
6. The miniature circuit breaker (200) as claimed in claim 5, wherein the tripping latch (204) is triggered by second end (205) of the plunger (207) when short circuit fault occurs.
7. The miniature circuit breaker (200) as claimed in claim 5, wherein the tripping latch (204) is triggered by a bimetal with a pointer (206) when overload fault occurs.
8. The miniature circuit breaker (200) as claimed in claim 1, wherein when short circuit fault occurs the plunger (207) moves towards the coil (201) shifting the second end (205) of the plunger (207) with the plunger cap (208) towards the slider (212) which in turn latch the second end (203b) of the second indicator (203) resulting in shifting of color of the indication section (211) of the second indicator (203) from third indication color to fourth indication color.
9. The miniature circuit breaker (200) as claimed in claim 1, wherein when the short circuit fault occurs the plunger (207) moves towards the coil (201) resulting in shifting of color of indication section (209) of the first indicator (202) from first indication color to second indication color.
10. The miniature circuit breaker (200) as claimed in claim 1, wherein when overload fault occurs the bimetallic pointer (206) moves away from the coil (201) unlatching the tripping latch (204) resulting in shifting of color of the indication section (209) of the first indication section (209) from first indication color to second indication color.
11. The miniature circuit breaker (200) as claimed in claim 1, wherein the first indicator (202) and the second indicator (203) is reset to normal operation after fault, by rotating the knob (302) and performing resetting operation.
12. The miniature circuit breaker (200) as claimed in claim 11, wherein in reset operation the first indicator (202) and the second indicator (203) starts rotating back to respective normal operation positions and slider (212) moves towards the plunger (207) under the action of spring (301) present in the slider (212).