Insulation frame for counter and/or distribution boxes

摘要

The frame (7) has a lug (8) for coupling distribution boxes (1, 2) together by connection units (17) at side walls for electrically insulating edges of the side wall openings. The lug is provided with a feed-through opening for the connection units or with a connection part that is formed at the lug. The lug is separated by the frame in a rated break point. The connection unit includes a threaded bolt with a center piece that is radially protruded by the threaded bolt. The feed-through opening is formed in a base wall of a hub.