Page 278 - contactors_motor_protection_for_rolling_stock_application

NF(Z) B..RT 4 and 8-pole contactor relays

Main accessories

Contactor relays and main accessories (other accessories available)

NF(Z)B..RT 4-pole contactor relay NF(Z)B..RT 8-pole contactor relay

3

CA4..RT
4-pole auxiliary
contact block
BX4-CA
BX4-CA Protective cover
CAL4-11RT Protective cover CAL4-11RT
2-pole auxiliary 2-pole auxiliary
contact block BX4 contact block
Protective cover

Main accessory fitting details
Many configurations of accessories are possible depending on whether these are front-mounted or side-mounted.
Contactor relay Main Front-mounted accessories Side-mounted accessories
types poles Auxiliary contact blocks Auxiliary contact blocks

Left side Right side
4-pole CA4..RT 2-pole CAL4-11RT
Max. add-on N.C. auxiliary contacts: 3 N.C. max. on positions 1, 2, 3, 4 and 2 N.C. max. on position 5
NF(Z)B 2 2 ERT 1 + 1 –
3 1 ERT – + 1 + 1
Max. add-on N.C. auxiliary contacts: 4 N.C. max. on positions 1, 2, 3, 4 and 3 N.C. max. on position 5
NF(Z)B 4 0 ERT 1 + 1 –
– + 1 + 1
NF(Z)B 4 4 ERT – + 1 –
6 2 ERT
8 0 ERT

1SBC101770S0201 - Rev. A

3/98 | ABB