Different phase failure relays feature different functions to protect magnetically controlled 3-phase equipment against damage caused by abnormal phase conditions such as open phasing or single phasing. It is worth nothing phase failure relays only detect problems and temporarily cut off the circuit for protection. They do not solve whatever caused the problem to begin with.
Protection mode: The main circuit is cut off automatically for a specified amount of time, then resets when the failure or problem is solved.
Typical problems are as follows.
We offer phase failure relays in different styles, shapes, and voltage ranges.