Unequipped, closed connection or cable junction box for free assembly with ceramic terminals and cable glands. Dimension A indicates the available mounting rail length for the wiring terminals. Sufficient wiring space thanks to diagonally arranged mounting rail. Fastened to easily accessible external brackets made of stainless steel. Approved for cable systems with electrical functional integrity in accordance with DIN 4102 Part 12 with classes E30, E60 and E90.