Electromagnetic starter called magnetic starter, is a direct starter. Electromagnetic starter generally consists of AC contactor, thermal relay,
through the operation button can be long-distance direct start and stop in a small cage type three-phase asynchronous motor.
Electromagnetic starter does not have short circuit protection function, so it will add fuse or low-voltage circuit breaker when it be used in the main circuit.
Electromagnetic starter is divided into reversible and irreversible two types.
Reversible electromagnetic starter has two different connection AC contactor,so it can control the motor respectively.
Non reversible electromagnetic starter has only one AC contactor, can only control the motor direction of rotation.