| 摘要 |
PROBLEM TO BE SOLVED: To obtain a low-tension distribution board capable of securing a wide connection space for wiring to molded-case circuit breakers. SOLUTION: In this low-tension distribution board 10, protection covers 74, 76, which covers a bus unit 30 and molded-case circuit breakers(MCCB) 50 fixed on a base plate 26, are supported in a rotatable manner with a hinged part 86 provided on a ventilating cover 70 and cosmetic covers 94, 96, 98 are attached to a frame 16. This structure enables the cosmetic and protection covers to rotate to be opened, leaving a large space between the bus unit 30 and frame 16 and thereby making it easy to mount or dismount the MCCBs and to connect the wirings to the MCCBs. |
