PowerPact B Electrical Auxiliary Devices
Summary of Electrical Auxiliary Devices
The following table shows electrical auxiliary devices that can be added to circuit breakers. Auxiliary contacts can be installed on site. For more information, see the PowerPact B-Frame Catalog .
Electrical Auxiliary Device |
Use |
1P |
2P |
3P/4P |
---|---|---|---|---|
OF auxiliary contact |
View the on/off status of the circuit breaker remotely. |
— |
✓ |
✓ |
SD auxiliary contact |
View the trip status of the circuit breaker remotely. |
— |
— |
✓ |
MX shunt trip |
Send an electrical trip command remotely. |
— |
✓ |
✓ |
MN undervoltage release |
Trip the circuit breaker when the control voltage drops below a tripping threshold. |
— |
✓ |
✓ |
MN undervoltage release with time-delay unit. |
Intended to avoid nuisance tripping in systems with frequent voltage dips lasting from 200 ms to 3 s. |
— |
✓ |
✓ |
Slots for Electrical Auxiliary Devices
The following figures show the available slots for electrical auxiliary devices mounted in the case. One auxiliary can be installed in each slot. For more information, see the PowerPact B-Frame Catalog.