We are manufacturer and supplier of no volt coil, which is also known in the industry by the names of under-volt coil, no-volt release or under-volt release coil. This coil forms the important part of control gear of a circuit breaker. It can also be a part of a large isolator. Some of the other names of this coil are solenoid, or logic function, since its is used for monitoring the incoming supply. If the no volt coil finds a de-energised supply, then the main contacts are opened up or the coil is tripped.