摘要:
Provided is a multi-pole molded case circuit breaker (MCCB) with an insulation barrier for a rotary pin, in which an insulation barrier is provided in a rotary pin for inter-phase power transmission to prevent dielectric breakdown. The multi-pole MCCB includes a shaft assembly having a movable contactor and having a plurality of rotary pin holes formed in a penetrating manner, a base assembly to which the shaft assembly is rotatably accommodated to be coupled, a switching mechanism coupled to an upper portion of the base assembly and rotating the shaft assembly, a plurality of rotary pins coupled to the plurality of rotary pin holes in a penetrating manner, and an insulation barrier formed of an insulating material and covering the plurality of rotary pins.
摘要:
A molded case circuit breaker includes a case configured to accommodate an element for trip, an upper cover 200 detachable attached to the case, a dial 100 configured to include a fixing plate 110, which is provided to protrude along an outer circumference surface thereof, and a first stopper 120 disposed under the fixing plate 110, a crossbar moved by the dial 100, a first dial fitting hole 210 provided in the upper cover 200 for the dial 100 to be fitted into the first dial fitting hole 210, and a dial rotation adjusting unit 220 provided in the first dial fitting hole 210 and fitted between the fixing plate 110 and the first stopper 120 to guide a rotation of the dial 100, the dial rotation adjusting unit 220 including a plurality of fitting grooves 223 arranged at certain intervals. The first stopper 120 is fitted into and fixed to the plurality of fitting grooves 223 according to the rotation of the dial 100.
摘要:
A molded case circuit breaker includes a fixed contact (120, 121); a movable contact (140) rotatably provided on a shaft assembly (130) to be brought into contact with or separated from the fixed contact; and an insulating barrier (150) that enters between the fixed contact and the movable contact during interruption, wherein the insulating barrier is coupled to the movable contact to rotate along a circumferential surface of a body of the shaft assembly (130).
摘要:
The present invention relates to a molded-case circuit breaker for direct current (DC), and more particularly, to a molded-case circuit breaker for DC in which a connecting conductor (21) for connecting terminals in the DC circuit breaker is configured as an assembly unit and contained in a terminal receiving portion (12) to improve insulation performance and assemblability and reduce occupied space. There is provided a molded-case circuit breaker for DC that contains a plurality of interruption units, the DC circuit breaker including a terminal connecting unit (20) that connects terminals of adjacent interruption units, the terminal connecting unit (20) being placed within a terminal receiving portion (12) on the front or rear of an outer casing of the circuit breaker.