What is overload protector?
Overload protection overcurrent sensing material is: "bimetal." It consists of bimetallic thermal elements, Action mechanism, Normally open normally closed contact, Reset button and so on. When the motor is overloaded, The current becomes large, Overload protection will lead to switch tripping, Thus plays the certain protection to the electrical machinery the function.
Motor overload protection includes: Short circuit protection, Lack of phase protection, Phase imbalance protection, Wrong phase protection