| 摘要 |
<p>1501911 Switchboard mountings GENERAL ELECTRIC CO 25 March 1975 [28 March 1974] 12429/75 Heading H1N [Also in Division H2] A device, such as a circuit breaker 10, is matable with contacts 30, 52 on a board and comprises male or female contacts 26 slidably matable with female or male contacts 30 and a rotatable screw-threaded contact 46 with limited axial movement relative to the device which when screwed into the contact 52 draws the contacts 26 into engagement with the contacts 30. Line buses 12a, 12b, 12c and load buses 14(a), 14b, 14c each have a respective contact 30 or 52 for mating with a contact 26 or 46 on the circuit breaker 10, contacts 26, 30 being pins and sockets, contacts 46 being each a bolt whose head bears against a terminal 22b or (24b), Fig. 2, not shown, through an aperture (40), Fig. 3, not shown, in which the bolt freely rotates. The head of the bolt in the line terminal 22b is engaged by an insulating coupling 36 rotatably secured to the breaker casing 16 by a plate 50 which can be engaged to rotate the bolt contact 46 in which the line bus 12b is live.</p> |
