BT-137 Ground Fault Relay
The BT-137 ground trip relay is designed for use with the 120 VAC under-voltage release or shunt trip circuit breakers on circuits limited to 25 amps or less ground fault current. The compact rugged BT-137 relay is factory set at 5 amps instantaneous trip and requires no field adjustments. This relay uses and instantaneous circuit breaker for tripping and indication. Unit incorporates as built in current injection test pushbutton and is designed to work with multiple current transformers.
The BT-137 is designed for use with the following Becker window type current transformers:
- Designed to work with multiple current transformers
- Provides safety for miners
- Protects equipment
- BT 95-0060 Window ID 1.5” Max of 3 single #2/0 cables with no mounting feet
- BT 95-0060-1 Window ID 1.5” Max of of 3 single #2/0 cables if using #1 or smaller cable use mounting feet
- BT 950069 Window ID 2” Max of 3 single #4/0 cables with no mounting feet
- BT 95-0061-01 Window ID 3.375” for high current circuits requiring dual cable per phase
Product certificates
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BT-137 Ground Fault Relay: Product inquiry
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