Can you get both a shunt trip and UVR on a Powerpact H, J, L, M, P, or R frame circuit breaker?
Issue:
Is it possible to install both a shunt trip (MX) and an undervoltage release (MN) in a Powerpact H, J, L, M, P, or R frame breaker?
Product Line:
Molded case circuit breakers
Resolution:
No, Powerpact circuit breakers can accept only one shunt trip or one UVR (undervoltage release).
However, you can use an UVR to get both shunt trip and UVR functionality as follows:
Is it possible to install both a shunt trip (MX) and an undervoltage release (MN) in a Powerpact H, J, L, M, P, or R frame breaker?
Product Line:
Molded case circuit breakers
Resolution:
No, Powerpact circuit breakers can accept only one shunt trip or one UVR (undervoltage release).
However, you can use an UVR to get both shunt trip and UVR functionality as follows:
- Install a UVR in the breaker
- Supply it from the control power source, going through NC (normally closed) contacts on a relay. This gives you the UVR function plus a means to open the circuit as you would with a shunt trip
- To obtain the shunt trip function, supply the relay coil from a switched control power source as you would a shunt trip. When you activate the switch and energize the relay coil, the NC contacts open, dropping voltage to the UVR, tripping the breaker.
Released for: Schneider Electric USA
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales inquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Center
Find support resources for all your needs, in one place.