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Motor protectorIt is composed of three-phase current transformer, detection, amplification, delay, adjustment circuit and execution relay. When the circuit detects that the current sensed by the current transformer is missing phase or greater than the set value, the motor protector is amplified by the amplifier to activate the relay. When the relay contact is connected in series to the contactor coil power supply circuit, the contactor is de-energized after the relay is activated to protect the motor. The delay circuit is used to avoid the motor starting current, and its duration is adjustable. The adjustment circuit is used to accurately set the action current according to the working current of the protected motor.

Motor protectorIt is a classic star-delta starting method for motors. The main working principle of the motor protector is to protect the thermal relay. If a thermal relay is used to protect a large motor, it will cause a break in the large wires, that is, a problem with the screw wiring in and out of the thermal relay, which is prone to heat and failure points. If a motor integrated protector is used instead of a fuse and a thermal relay, because the protector is a through-type, it can reduce the break points of the large wires, thereby reducing heat and failure points.

The above is some introduction about the working principle of motor protector. Changzhou Ainuo Electronic Technology Co., Ltd. is a manufacturer specializing in the production and sales of motor protectors. We have many years of experience in producing motor protectors, and the motor protectors we produce have a good reputation among customers. If you have any needs, please come to consult!