Frequently asked questions
Is the undervoltage trip included with time delay units for Powerpact breakers?
FA239130
28 September 2021
Issue:Is the UVR time delay units include the undervolage trip device?
Product Line:
Powerpact H, J, L, M, P and R frame molded case circuit breakers
Environment:
Products sold and used in the United States
Cause:
Need time delay for UVR - want to know if just time delay is needed, or time delay + undervoltage trip
Resolution:
The time delay units for Powerpact molded case circuit breakers, both adjustable and non-adjustable, do NOT include the undervoltage trip. Select the UVR separately to meet required control voltage for the circuit.
NOTE: For Powerpact H, J, L - Selecting the correct UVR when a Time Delay Unit is required
The output of the Time Delay Unit contains a large DC component, even when applied on an AC system.
This requires selecting a DC-rated UVR in lieu of an AC-rated UVR. Select as shown below