F0RM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10; rule 13)
1. Title of the invention. - SECTIONED INTEGRAL MONO-BLOCK STRUCTURE TYPE ELECTRIC POLE CONSTRUCTION

2. Applicant(s)
(a) NAME : LARSEN & TOUBRO LIMITED
(b) NATIONALITY : An Indian Company.
(c) ADDRESS : L & T House, Ballard Estate, Mumbai 400 001, State of Maharashtra, India

3. PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed:

FIELD OF THE INVENTION
The present invention relates to pofes of Low Voltage current limiting circuit breaker and the likes. More particularly, the present invention relates to sectioned integral mono-block structure type electric pole construction in which the poles are derived using a sectioned Common shared Wail structure between the contact system chambers, which is termed as sectioned integral mono-block structure along with two half shell enclosures or end caps.
BACKGROUND AND THE PRIOR ART OF THE INVENTION
In prior art, the method used for manufacturing and Arranging the contact system assembly have some drawbacks and critical aspects.
Currently the electrical poles used in industrially employed circuit breakers and the likes are available in various constructive embodiments, characterized to varying degree by modularity and detachability features, and are conceived to provide an adequate performance in electrical and mechanical terms.
In particular, for the correct operation of the circuit breaker it is fundamentally important that the moving contacts of the various poles be actuated synchronously with each other, and that suitable electrical insulation is ensured among the electrically active parts, furthermore because of the significant power levels involved, the circuit breaker must be able to withstand adequately the mechanical stresses involved during its working life.
In the case of MCCB and the likes, the type to which the present invention relates, the components of the various poles are inserted in a box-like enclosure that is configured appropriately and is generally made of plastic, usually structural synthetic resins. Said case is a part of the outer enclosure of said circuit breaker and acts both as a containment element, and also rigidly couple mechanically the various poles to each other, and as a structural element, since it helps to withstand the considerable stresses and vibrations that are discharged onto it during transition of the device or in case of tripping or short-circuit. The outer enclosure of the circuit breaker is then generally completed by using a cover, also made of plastic, which is arranged on the front part of the circuit breaker, to cover the actuation elements of the circuit breaker, a knob, available for the manual intervention of operations, protrudes from the cover.

In this type of circuit breaker, a first constructive solution uses a single case that is divided internally into compartments to form seats in which various components of each pole are assembled; in this case, the partitions between the various compartments are shaped to allow the passage of a contact supporting shaft that passes through, and affects, the various poles and on which the various moving contacts are mounted; moreover, the entire assembly is conceived to ensure adequate electrical insulation among said poles.
In second solution described in prior arts US6377144 and US 5298874 uses a two-case constructive structure. In this solution, the various components of each pole are inserted first of all in a first case generally formed by two half shells, whose function is essentially to contain the components of each pole; then the cases of the various poles are in turn inserted in a second case, which in this solution also is part of the outer enclosure of the circuit breaker and performs mechanical - structural functions, in a manner similar to the one described above.
In both the cases, a critical aspect arises from the use of the outer containment cases, which generally have a complicated and bulky shape. Most of all manufactured in multiple varieties that are varied by size and number of poles constituting the circuit breaker; this clearly shows the use of variety of components and several molds and of considerable material, ultimately leading to an unnecessary and significant increase in production costs. Furthermore in two - case solutions it is often necessary to use special spacer modules or elements that are inserted in the outer enclosures for example, between two laterally adjacent poles, in order to occupy any free space and rigidly couple the poles keeping them in the correct position.
Moreover, because of the stresses and vibrations that the outer cases have to withstand, these containment elements are subjected to deterioration and deformation; accordingly, it is often necessary to replace the circuit breaker completely or possibly perform difficult and expensive maintenance operations in order to ensure adequate reliability. Clearly this has negative repercussions on the overall manufacturing and operating costs, and maintenance at site, of the circuit breaker.
From the electrical point of view, if one uses the two-case solution, the outer cases for containing the components of the individual poles must be shaped appropriately so as to suit for coupling to the elements on which the moving contacts of each pole are fitted, typically the sections of a contact supporting shaft. For this purpose, said inner cases have lateral

openings through which transverse bars are passed; said bars are passed through the various poles and are meant to transmit the motion among the corresponding moving contacts so as to provide transitions that are as synchronous as possible.
Although this solution allows to transmit motion among the various poles, it requires additional openings in the containment cases, which must be sealed appropriately so that the gases normally generated inside the poles during a short circuit exit only through the venting channels provided for this purpose; to do so, said additional openings require the use of additional components which are appropriately shaped mechanical elements, and this increases the number of required constructive components, increases the constructive complexity of the entire assembly, and ultimately in the costs.
In another known type of solution described in prior art, US7116194, where it is one case type of construction solution. Individual poles are formed by cassette type of construction and no additional provision of extra cover. Individual cassettes are formed by two half shell enclosures, which accommodates the contact system elements, provide an electrical pole for a LV power circuit breaker and the likes that has a smaller number of compoments than the previously described arts, but considerably has some disadvantages like Integration of individual cassettes and Integration of Multiple cassettes have to be taken care of.
In a typical 2 pole or more pole construction 2 individual poles or more poles are placed together laterally/ adjacently by arranging in such a fashion that the outer surfaces of the half shell enclosure (1) with half shell enclosure (2) in a surface to surface contact.
In this scenario, the pole 1 and pole 2 are separated by 2 half shell enclosure walls which are in duplication. The contact system assemblies are secured between such half shell enclosure walls forming a contact system chamber/enclosure.
The drawbacks of the above mentioned prior art is that it calls for a involvement of more number of components for a multi-pole construction and also increases the hardware components for individual cassette packing and multi-pole packing. Therefore results in duplication of walls, where 2 or more such poles are placed adjacentiy, mounting and joining with other modules of the breaker is complex and the poles are independent and separate, repulsion between the poles during flashover is difficult to control with the said hardware, pole to Pole alignment is not maintained because of relative movement between cassettes, achieving Pole to Pole alignment with the axial alignment of IDS is tough and axial alignment

of IDS dependent on the pole to pole alignment leads in difficulty to set alignment with mechanism's virtual center.
OBJECTS OF THE INVENTION
An object of the present invention is to overcome the problems/disadvantages of the prior art.
Another object of the present invention is to provide an electric pole for a LV power circuit breaker and the likes, in which the connection among the various elements of said pole with other poles associated, is provided simply and reliably, avoiding complicated joining and assembly operations.
Another object of the present invention is to provide an electric pole for a LV circuit breaker and the likes that is easy to manufacture and at modest costs.
These and advantages of the present invention Will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings.
SUMMARY OF THE INVENTION
According to one of the aspect of the present Invention there is provided a multi - electric
pole construction of Low Voltage (LV) current limiting circuit breaker and the likes, said multi
electric pole construction comprising:
plurality of contact system assembly, said each contact system assembly placed in each
pole;
atleast one integrated structure means, said each structure means comprising:
a modular means such that said modular means is substantially sectioned/split along the Y
axis vertically in frontal plane or coronal plane or lateral plane to form a front means and rear
means, said front means and rear means are positioned substantially, in such a way that the
semi-circular detail present on each of them together forms a complete circular detail,
diametric to each other, said front and rear means are substantially integrated/joined to form
said modular means,
said modular means having plurality of cavities arranged to substantially accommodate /
receive said contact system elements within it on either side;

a pair of hollow means having a substantially semi-circular modular profile embedded
substantially on the edge of said front and rear means being adjacent to each other, said
pair of semi-circular modular profile are integrated to form a substantially circular modular
profile; said interfacing sides comprises an arrangement for forming a labyrinth seal between
the adjacent contact system chambers to avoid the arc gasses leakage wherein said
labyrinth seal is secured, by passing at least one tension elements extending from the front
of the front split-section / mono-block to the rear of the rear split section / mono-block, with
fasteners or rivets.
plurality of opening substantially embedded on top of said integrated structure means;
plurality of hardware means secured inside said openings adapted to couple plurality of
poles;
a pair of enclosure, said each enclosure means having substantially half shell modular
profile, said one of the enclosure means is placed on one of the extreme end of said multi -
pole electric circuit breaker and another enclosure means is placed on another extreme end
of said multi - pole electric circuit breaker such that both the enclosure are diametric to each
other adapted to enclose said multi-pole electric circuit breaker;
said each enclosure means is having cavities that are provided to accommodate said
contact system assembly within it and having substantially similar modular profile;
such that said each contact system assembly is substantially placed in-between said pair of
integrated structure means, such that said integrated structure means is one quantity less
that the number of electric poles .
According to another aspect of the present invention there is provided_An integrated structure means, said each means comprising:
a modular means such that said modular means is substantially sectioned/split along the Y
axis vertically in frontal plane or coronal plane or lateral plane to form a front means and rear means , said front means and rear means are positioned substantially , in such a way that the semi-circular detail present on each of them together forms a complete circular detail, diametric to each other and front and rear means are substantially integrated to form
said modular means,
said modular means having plurality of cavities to substantially accommodate said contact
system within it;
a pair of hollow means having a substantially semi-circular modular profile embedded substantially on the edge of said front and rear means being adjacent to each other, said

pair of semi-circular modular profile are integrated to form a substantially circular modular
profile;
plurality of opening substantially embedded on top of said integrated structure means;
plurality of hardware means secured inside said openings adapted to couple plurality of
poles.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is related to poles of Low Voltage current limiting circuit breaker and the likes, which are commonly used to receive, supply, protect and isolate the current supply in an electrical circuit. Circuit breaker typically serves two basic purposes. As a switching device: Switching On/Off during normal operating conditions for the purpose of operation and maintenance. As a protecting device: Tripping or Isolating by breaking the contacts interrupting the fault current during abnormal conditions such as short-circuit, overload and under voltage.
Circuit breaker consists of one or more electric poles, whose number determined by the "application as single pole circuit breaker, two pole circuit breaker, three pole circuit breaker, four pole circuit breaker, five pole circuit breaker and so on. Each pole is made of a contact system and each contact system consists of a moving contact, a pair of fixed contacts, a pair of arc chutes and insulated drive shaft to rotate the moving contact to make connection and disconnection of current during ON-OFF operation. In-turn the fixed contacts are connected electrically to the phase or natural conductor associated with said pole.
Poles form the main function of housing all the contact system elements and to function to the expected level. Poles are expected to meet the requirements of electrical and mechanical properties.
In case of electrical devices, having more than one pole, the poles are formed by using a barrier in-between or the walls constructed.
In the present Invention of sectioned integral mono-block type construction, the poles are derived using a sectioned Common shared Wall structure between the contact system chambers, which is termed as sectioned integral mono-block structure along with atleast two half shell enclosures or end caps. Sectioned Integral mono block type structure is a construction derived by arranging two split sections, which are termed as front split-section or mono-block and rear split-section or mono-block, here after, in a mutually integrated manner as shown in the figure (5). Front split-section or mono-block (9) and rear split-section

or mono-block(10), when joined together will feature the details of a half-shell enclosure on either side, in the assembled condition, so that their cavities that are shaped to accommodate their contact system elements are facing outside. The combined walls of two half shells featuring the details form a common wall with the increased cross-section of the wall being formed, which in-turn provides high structural rigidity. To construct a multi-pole circuit breaker and the likes, atleast one such sectioned integral mono-block structure is used, essentially, along with 2 half shell enclosures. In any multi-pole construction, the number of such sectioned integral mono block structures used are one quantity less than the number of poles formed and 2 half shells are always used on both the extreme ends as end caps, irrespective of the number of poles.
The present invention substantially maintains the same number of components when compared to the existing solutions in a multi-pole construction. The number of components for a single pole construction remains same for both the present invention and the solution existing in the prior art. The present invention drastically reduces
- Number of hardware elements
- Component cost
- Manufacturing cost
- Assembly time
- Die cost
- Complexity of the die
The present invention substantially increases
- The structural rigidity
- The pole to pole alignment
-The pole to pole alignment with the axiai alignment of Insulated drive shaft (IDS)
- Axial alignment of IDS with the mechanism's virtual center.
- Manufacturing and Assembly ease.
- Synchronous motion transmission during ON-OFF operation
- Uniform contact pressures across the poles, due to the possibility of single drive shaft.
- the ease of assembling with other modules of the circuit breaker and the iikes.
- high integral and structural rigidity between the poles.

The advantages are significant in Multi-pole construction of the circuit breaker and likes.
In the present invention the construction of multi-pole is done/achieved/ derived by using a sectioned integral structural insulated member which is formed by joining two split sections, termed as front split-section or mono-block and rear split-section or mono-block, here after, used as a common partition wall for a 2-pole or multi-pole construction between the contact system chambers. These members are single piece molded structure which bears all the details shaped up on both sides, to place / accommodate / to receive the contact system elements in assembled condition. Also there is a through and through circular passage via which the IDS are allowed to mesh with other IDS of the pole placed adjacently.
As the construction of the component is a sectioned single piece mold, the structural strength is inherited due to the thicker wall sections. This in turn withstands the repulsion forces by the gas pressure developed within the contact system chamber during flash over which is beneficial in a contact make and break scenario. In a multi-pole construction i.e. 2pole, 3 pole, 4 pole etc. of a circuit breaker and the likes, this sectioned Integral mono-block structure repeats itself in a designated order as the number of poles increases.
In this kind of arrangement the IDS of One pole is engaged with the IDS of another pole at the vertical central plane of the sectioned integral mono-block structure via circular passage. Pluralities of the slots are provided on one of the sectioned integral structure, to allow the driving means connection to the IDS.
The objects are achieved by an electric pole for a LV power circuit breaker and the likes, comprising of two end caps, called as half shell enclosures, and a sectioned Integral mono-block type structure, that has a lower wall and a upper wall, at least one arc chute, at least one fixed contact and at least one moving contact that can be mutually coupled or uncoupled, and a first electric terminal and a second electric terminal that are functionally associated with said fixed contact and said moving contact and allow electrical connection of the pole in input and in output. In particular, the insulating enclosure comprises a first half-shell and a second half-shell, formed from a sectioned Integral mono block type structure, which are mutually coupled along corresponding coupling surfaces and form a self-supporting structure and first and second and third containment volumes and so on, which are arranged on either sides with respect to said compartment and are suitable to accommodate respectively said first and second electric terminals.

In a sectioned Integral mono-block type pole construction, for 2 pole breaker and the likes, atleast one sectioned mono-block and essentially two half shells are used for construction. By doing this, the following benefits are achieved.
• Avoiding Individual cassettes hardware to pack the half shells.
• Multi-pole construction using same Number of components.
• Internally increasing the structural strength to withstand the repulsion forces.
• Eliminates the duplication of walls.
• Pole to pole alignment is achieved due to relative constraints.
• Hence, the IDS alignment with mechanism center is also maintained. • Flexibility of pole construction is achieved due to the modularity.
• Reducing the manufacturing and material cost and assembly time.
• Reducing the Die complexity and Die cost.
• Increasing the ease of assembly.
• Provides the scope of using single-piece molded insulated drive shaft across
the poles, which substantially reduces the rotational lag of the moving
contacts between the poles and aides the synchronous movement of the
same, which is a draw-back in case of the prior art. This also ensures a
uniform contact pressure across the poles during ON-OFF operation, when
driven by an actuation mechanism means.
Features of the present invention:
• innovation lies in the way of reducing the manufacturing cost and material cost. • Innovation lies in the way of increasing the structural strength inherently to withstand the repulsion forces.
• Innovation lies in the unique way of forming the integral mono-block structure with the front split-section and rear split-section arranged together.
• Innovation lies in the unique way of forming the sectioned integral mono-block structure with the all the features of half shell enclosure shaped on either side, to receive the contact system elements.
• Innovation lies in the achieving a high structural strength with unique sectioned integral mono-block construction.
• innovation lies in the way of reducing number of hardware to pack the half shells of Individual poles.
• Innovation lies in the way of Elimination of duplication of walls.

• Innovation lies in the way of achieving pole to pole alignment due to relative constraints.
• Innovation lies in the way of maintenance of IDS alignment with mechanism center. Innovation lies in the way of achieving flexibility of pole construction.
• Innovation lies in the way of achieving modularity, improving functionality and increasing the ease of assembly.
• Innovation lies in reducing assembly time and increasing manufacturing ease.

• Innovation lies in reducing Die complexity and Die cost. • Innovation lies in increasing the ease of assembly.
• Innovation lies in providing the scope of using a single -piece molded drive shaft.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
Other features as well as the advantages of the invention will be clear from the following description.
In the appended drawings:
Figure 1 illustrates the contact system and poles of prior art.
Figure 2 illustrates the assembled electrical pole (8) of prior art
Figure 3 illustrates the placement of three such electrical poles (8) of prior art
Figure 4 illustrates the assembled three pole circuit breaker and the likes of prior art.
Figure 5 illustrates the formed Sectioned integral mono-block shared wall structure with front
split-section(9) and rear split-section(10) which put together is termed as Sectioned integral
mono-block type structure in the present invention,
Figure 6 illustrates the formation of 3 pole circuit breaker and the likes using the Sectioned
integral mono-block construction.
Figure 7 illustrates the assembly sequence 1.
Figure 8 illustrates the Next assembly step.
Figure 9 illustrates the Next assembly sequence.
Figure 10 illustrates the assembled multi-pole circuit breaker and the likes of the present
invention.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWING
In the following detailed description, reference is made to the accompanying drawings that form a part hereof, and illustrate the best mode presently contemplated for carrying out the

invention. Further functioning of the structure has been discussed below to describe the way the structure operates. However, such description should not be considered as any limitation of scope of the present unit. The structure thus conceived is susceptible of numerous modifications and variations, all the details may furthermore be replaced with elements having technical equivalence. In practice the materials and dimensions may be any according to the requirements, which will stiff be comprised within its true spirit.
Figure 1 represents the contact system and poles of prior art. The method of pole formation is disclosed. Half shell enclosure (1), Half shell enclosure (2), contact system elements (3), Passage (4) for Assembling Insulated drive shaft (IDS), IDS (5), Holes for providing hardware for cassettes packing (6), Holes for providing hardware for multi-pole packing (7).
Figure 2 represents the assembled electrical pole (8) of prior art The electrical pole (8) is formed by placing contact system elements (3) in-between half shell enclosure (1) and half shell enclosure (2) which is packed with the help of hardware through the holes (6).
Figure 3 represents the placement of three such electrical poles (8) of prior art placed such that the half shell enclosure (2) faces the surface of half shell enclosure (1), in order to form three pole LV circuit Breaker and the likes and so on as the number of poles increases. The hole (7) provided for packing the multi-pole breaker and the likes is used to pack the poles.
Figure 4 represents the assembled three pole circuit breaker and the likes of prior art. The assembled breaker and the likes shows the use of separate hardware (6) for packing individual cassettes and the use of separate hardware (7) for packing multi-poles. This clearly shows the use of more number of hardware. And the use of more number of components, that is double the number of poles, 6 components of half shell enclosure (1) and half shell enclosure (2), has been clearly seen.
Figure 5 represents the formed Sectioned integral mono-block shared wall structure with front split-section (9) and rear split-section(IO) which put together is termed as Sectioned integral mono-block type structure in the present invention, which has the features shaped to accommodate the contact system elements assembly (3) securing them between the side (11) of one pole and side (12) of other similar pole placed adjacent to each other. This uni-walled structure is provided with a Passage (13) for IDS (5) to get connected to the IDS of the other pole, which acts as a common passage for two adjacent poles. Packing/joining of

the Multi-pole is done by passing the designated hardware through the holes (14) provided on the said poles. An inherent structural rigidity is achieved due to the thicker cross-section formed within a Sectioned integral mono-block component of uni-walled structure. Duplication of walls(1) (2), which are assembled with surface to surface contact in case of multi-pole packing, is avoided by using a Sectioned integral mono-block structure (9) (10).
Figure 6 represents the formation of 3 pole circuit breaker and the likes using the Sectioned integral mono-block construction. The poles are derived using a half shell enclosure (1) and half shell enclosure (2) and two split Sections of integral mono-block structures (9) and (10) which are termed as Sectioned integral mono-block type components. As the number of poles increases, the Number of Sectioned integral mono-block construction with a combination of front split-section (9) and rear split-section (10) keeps repeating, and the number of half shell enclosures (1) and (2) remains the same. The contact system elements (3) are placed as shown in fig.
Figure 7 represents the assembly sequence 1, where the bottom two Sectioned integral mono-blocks (10) are first connected together with the contact system elements (3) placed in-between them.
Figure 8 represents the Next assembly step, Where the top two Sectioned integral mono-blocks (9) are assembled on the corresponding connected bottom two Sectioned integral mono-blocks (10), which forms a complete chamber with the passage (13) for the IDS (5).
Figure 9 represents the Next assembly sequence, where the contact system elements (3) for the adjacent poies are assembled in the corresponding cavities provided at the top (9) and bottom (10) of two Sectioned integral mono-blocks.
Figure 10 represents the assembled multi-pole circuit breaker and the likes of the present invention. The poles being derived from two Sectioned integral mono-blocks construction (9) (10) and the half shell enclosures (1) (2), need not to be packed individually pole-wise (6) and separate packing for multi-poles (14). The entire assembly is done through the same hardware (14), which reduces the number of hardware elements used. The description also clearly states formation of thicker section which inherently has higher structural rigidity.

WE CLAIM
1. A multi - electric pole construction of Low Voltage (LV) current limiting circuit
breaker and the likes, said multi electric pole construction comprising:
plurality of contact system assembly, said each contact system assembly placed in each pole;
atleast one integrated structure means, said each structure means comprising:
a modular means such that said modular means is substantially sectioned/split along
the Y axis vertically in frontal plane or coronal plane or lateral plane to form a front
means and rear means, said front means and rear means are positioned
substantially, in such a way that the semi-circular detail present on each of them
together forms a complete circular detail, diametric to each other, said front and rear
means are substantially integrated/joined to form said modular means,
said modular means having plurality of cavities arranged to substantially
accommodate / receive said contact system elements within it on either side: . '
a pair of hollow means having a substantially semi-circular modular profile embedded substantially on the edge of said front and rear means being adjacent to each other, said pair of semi-circular modular profile are integrated to form a substantially circular modular profile; said interfacing sides comprises an arrangement for forming a labyrinth seal between the adjacent contact system chambers to avoid the arc gasses leakage wherein said labyrinth seal is secured, by passing at least one tension elements extending from the front of the front split-section / mono-block to the rear of the rear split section / mono-block, with fasteners or rivets.
plurality of opening substantially embedded on top of said integrated structure means;
plurality of hardware means secured inside said openings adapted to couple plurality of poles;
a pair of enclosure, said each enclosure means having substantially half shell modular profile, said one of the enclosure means is placed on one of the extreme end of said multi - pole electric circuit breaker and another enclosure means is placed on another extreme end of said multi - pole electric circuit breaker such that

both the enclosure are diametric to each other adapted to enclose said multi-pole electric circuit breaker;
said each enclosure means is having cavities that are provided to accommodate said contact system assembly within it and having substantially similar modular profile;
such that said each contact system assembly is substantially placed in-between said pair of integrated structure means,
such that said integrated structure means is one quantity less that the number of electric poles .
2. A multi - electric pole construction as claimed in claim 1 wherein said contact system comprising insulated drive shaft (IDS) with moving contact assembly.
3. A multi - electric pole construction as claimed in claim 1 wherein said hollow means adapted to accommodate said IDS.
4. A multi - electric pole construction as claimed in claim 1 wherein said enclosure means is insulated.
5. A multi - electric pole construction as claimed in claim 1 wherein said integrated structure means is insulated.
6. An integrated structure means, said each means comprising:
a modular means such that said modular means is substantially sectioned/split along the Y axis vertically in frontal plane or coronal plane or lateral plane to form a front means and rear means , said front means and rear means are positioned substantially , in such a way- that the semi-circular detail present on each of them together forms a complete circular detail, diametric to each other and front and rear means are substantially integrated to form said modular means, said modular means having plurality of cavities to substantially accommodate said contact system within it;
a pair of hollow means having a substantially semi-circular modular profile embedded substantially on the edge of said front and rear means being adjacent to each other, said pair of semi-circular modular profile are integrated to form a substantially circular modular profile;

plurality of opening substantially embedded on top of said integrated structure means;
plurality of hardware means secured inside said openings adapted to couple plurality of poles.
7. An integrated structure means as claimed in claim 6 wherein said integrated structure means is insulated.
8. An integrated structure means as herein substantially described and illustrated with the accompanying drawings.
9. A multi - electric pole construction of Low Voltage (LV) current limiting circuit breaker and the likes, as herein substantially described and illustrated with the accompanying drawings.