| 摘要 |
PCT No. PCT/SE80/00046 Sec. 371 Date Oct. 14, 1980 Sec. 102(e) Date Sep. 26, 1980 PCT Filed Feb. 14, 1980 PCT Pub. No. WO80/01741 PCT Pub. Date Aug. 21, 1980. An overvoltage protection device for wires, preferably telephone cables, comprises overvoltage arresters (11) of the discharge tube type and connection clamps (7, 8) for the wires, which connection clamps are placed in a terminal block (2). The device is manufactured in such a manner that the overvoltage arresters (11) are enclosed in a detachable cassette (16) and so that the terminal box (2) is pivotal to allow for insertion and removal of the cassette (16). The cassette comprises a number of spaces for the overvoltage arresters (11) and a movable lock (19) to retain and to release the overvoltage arresters (11) respectively. |
