Circuit breaker external accessories

Electric operating mechanism: This is an accessory used for remote automatic opening and closing of circuit breakers. There are two types of electric operating mechanisms: motor operating mechanism and electromagnet operating mechanism. The motor operating mechanism is suitable for molded case circuit breakers with a frame rating of 400A and above, and the electromagnet operating mechanism is suitable for molded case circuit breakers with a frame rating of 225A and below. Whether it is an electromagnet or a motor, their attraction and rotation directions are the same, and the closing and opening are achieved only by the position of the cam inside the electric operating mechanism. When the circuit breaker is operated by the electric mechanism, it should be able to ensure reliable closing of the circuit breaker at any voltage between 85%-110% of the rated control voltage.
Rotating operating handle: Applicable to molded case circuit breakers. The mechanism of rotating operating handle is installed on the cover of the circuit breaker. The rotating shaft of the handle is installed in its mechanism matching hole. The other end of the rotating shaft passes through the door hole of the drawer cabinet. The handle of the rotating handle is installed on the rotating shaft head exposed on the door of the complete set of equipment. The round or square seat of the handle is fixed on the door with screws. Such installation enables the operator to ensure the closing or opening of the circuit breaker by turning the handle clockwise or counterclockwise outside the door. At the same time, the rotating handle can ensure that the cabinet door cannot be opened when the circuit breaker is in the closed state; only when the rotating handle is in the open state or is buckled again, the door of the switch panel can be opened. In an emergency, when the circuit breaker is in the "closed" state and the door panel needs to be opened, the red release button on the side of the rotating handle seat can be pressed.
Extended handle: It is an external extended handle, which is directly installed on the handle of the circuit breaker. It is generally used for large-capacity circuit breakers of 600A and above for manual opening and closing operations.
Handle locking device: a card is installed on the handle frame, a hole is punched on the handle and then locked with a padlock. It is mainly used when the circuit breaker is in the closed state.
In the working state, other people are not allowed to open the circuit breaker to cause a power outage, or when the circuit on the load side of the circuit breaker needs to be repaired or is not allowed to be powered on, to prevent the circuit breaker from being closed by mistake.