Search

Search

Front cable connection

The diagram below illustrates all the components available for implementing a direct cable connection at the molded case circuit breaker. The only exception is the box terminal as this can be used to connect busbars as well as cables.

Box terminal

54103225739.png

The box terminal as a factory-assembled connection can be optionally selected as an alternative to the lug terminal (see chapter Front busbar and cable lug connections) for all 3VA molded case circuit breakers up to size 160A. The 3VA breaker is then shipped with preassembled box terminals.

A special terminal can be installed to provide an auxiliary conductor connection. For further information, please refer to chapter Auxiliary conductor terminal.

In addition to directly connected cables, flexible busbars can also be connected to box terminals.

The tables below show all the types and sizes of cable and flexible busbar that can be connected to a box terminal.

3VA1 molded case circuit breakers:

3VA2 molded case circuit breakers

Box terminals can be ordered

  • as a pack of 3

  • as a pack of 4

Circular conductor terminal with and without auxiliary conductor terminal

54104843019.png
56530849291.png

The circular conductor terminal is available under separate article numbers depending on whether it is ordered with or without an auxiliary conductor terminal. With the exception of the bore for the auxiliary conductor terminal, both circular conductor terminals are technically identical, i.e. the same cable cross sections can be connected to both variants.

NOTE

All auxiliary conductor terminals included in the 3VA molded case circuit breaker portfolio have a maximum current-carrying capacity of 6 A.

Suitable cable cross-sections: Cables with a maximum cross-section up to 2.5 mm2 can be connected.

The circular conductor terminal is an internal component, i.e. it is contained within the external contour of the molded case circuit breaker. As a result, the size of cable cross section which can be connected is limited by the geometry of the breaker's termination area.

The tables below show all the types and sizes of cable which can be connected to a circular conductor terminal.

3VA1 molded case circuit breakers:

3VA2 molded case circuit breakers:

Circular conductor terminals with or without auxiliary conductor terminal can be ordered

  • as a pack of 3

  • as a pack of 4

Circular conductor terminal, large, with and without auxiliary conductor terminal

56533763467.png
54105756555.png

The circular conductor terminal, large, is available under separate article numbers depending on whether it is ordered with or without an auxiliary conductor terminal. With the exception of the bore for the auxiliary conductor terminal, both circular conductor terminals are technically identical, i.e. the same cable cross sections can be connected to both variants.

NOTE

All auxiliary conductor terminals included in the 3VA molded case circuit breaker portfolio have a maximum current-carrying capacity of 6 A.

Suitable cable cross-sections: Cables with a maximum cross-section up to 2.5 mm2 can be connected.

The circular conductor terminal large is an external terminal, i.e. it projects beyond the external contour of the breaker's termination area. This means that cables with a larger cross section can be connected.

The extended terminal cover plus the required assembly materials are supplied as standard with all circular conductor terminals, large. This isolates the termination area, providing degree of protection IP4x at the front of the molded case circuit breaker and degree of protection IP2x at the infeed and load ends (see chapter Insulating equipment).

The table below shows all the types and sizes of cable which can be connected to a circular conductor terminal large.

Circular conductor terminals large with or without auxiliary conductor terminal can be ordered

  • as a pack of 3

  • as a pack of 4

Circular conductor terminal, 2 cables, with and without auxiliary conductor terminal

56533772043.png
56534203019.png

The circular conductor terminal, 2 cables, is available under separate article numbers depending on whether it is ordered with or without an auxiliary conductor terminal. With the exception of the bore for the auxiliary conductor terminal, both circular conductor terminals are technically identical, i.e. the same cable cross sections can be connected to both variants.

NOTE

All auxiliary conductor terminals included in the 3VA molded case circuit breaker portfolio have a maximum current-carrying capacity of 6 A.

Suitable cable cross-sections: Cables with a maximum cross-section up to 2.5 mm2 can be connected.

The circular conductor terminal 2 cables is an external terminal, i.e. it projects beyond the external contour of the breaker's termination area. The 2-cable capacity of the terminal allows cables with large cross sectional area to be connected.

The extended terminal cover plus the required assembly materials are supplied as standard with all circular conductor terminals, 2 cables. This isolates the termination area, providing degree of protection IP4x at the front of the molded case circuit breaker and degree of protection IP2x at the infeed and load ends (see chapter Insulating equipment).

The table below shows all the types and sizes of cable which can be connected to a circular conductor terminal 2 cables.

Circular conductor terminals 2 cables with or without auxiliary conductor terminal can be ordered

  • as a pack of 3

  • as a pack of 4

Circular conductor terminal, 6 cables

54106836235.png

The circular conductor terminal, 6 cables is an external terminal, i.e. it projects beyond the external contour of the breaker's termination area. It can hold up to 6 cables. One of the six bores in the terminal can be used to implement an auxiliary conductor terminal.

The extended terminal cover plus the required assembly materials are supplied as standard with all circular conductor terminals, 6 cables. This isolates the termination area, providing degree of protection IP4x at the front of the molded case circuit breaker and degree of protection IP2x at the infeed and load ends (see chapter Insulating equipment).

The table below shows all the types and sizes of cable which can be connected to a circular conductor terminal, 6 cables.

3VA1 molded case circuit breakers:

3VA2 molded case circuit breakers:

Circular conductor terminals, 6 cables can be ordered

  • as a pack of 3

  • as a pack of 4

Connection technology

Cables and busbars

Box terminal

Solid conductor, class 1

Circular conductor terminal with auxiliary conductor terminal

Stranded conductor, class 2

Circular conductor terminal

Flexible conductors, classes 5 and 6

Circular conductor terminal, large, with auxiliary conductor terminal

Sector-shaped conductors

Circular conductor terminal, large

Flexible busbars

Circular conductor terminal, 2 cables, with auxiliary conductor terminal

Circular conductor terminal, 2 cables

Circular conductor terminal, 6 cables

56571901451.png
63907391371_Table-1.png
63907391371_Table-2.png
71849075467_Table-1.png
71849075467_Table-2.png
63908189707_Table-1.png
63908189707_Table-2.png
71861755403_Table-1.png
71861755403_Table-2.png
63908565643_Table-1.png
63908565643_Table-2.png
63908762379_Table-1.png
63908762379_Table-2.png
63909048715_Table-1.png
63909048715_Table-2.png
71874133131_Table-1.png
71874133131_Table-2.png