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Basic Structure and Torque of Circuit breaker DC motor

Mar 16, 2019

The motor of the Circuit breaker DC motor is widely used in electric drive during operation due to its good speed regulation performance. When the DC power supply supplies power to the armature winding through the brush, the armature surface The N-pole lower conductor can flow current in the same direction, and the conductor will be subjected to a counterclockwise moment according to the left-hand rule.


The lower part of the S-pole part of the armature of the DC motor of the circuit breaker also flows through the current in the same direction. Also, according to the left-handed rule, the conductor will also be subjected to the counterclockwise moment. Thus, the entire armature winding, that is, the rotor, will rotate counterclockwise, and the input DC power is converted into mechanical energy output on the rotor shaft. It consists of stator and rotor, stator: base, main magnetic pole, commutating pole, brush device, etc.; rotor (armature), armature core, armature winding, commutator, shaft and fan.

Basic structure of circuit breaker DC motor


It is divided into two parts: the stator and the rotor. Note: Do not confuse the commutator with the commutator.


The stator includes: a main magnetic pole, a base, a commutating pole, a brush device, and the like.


The rotor includes: an armature core, an armature winding, a commutator, a shaft and a fan.