Schutzvorrichtung gegen Blitzüberspannungen

摘要

The unit has a combination of a lightening arrester block (1) and a circuit breaker (2) joined to form an assembly. The block has a thermal disconnector, a varistor and a visual signaling unit arranged in a cartridge (15) that can be plugged in electrically and mechanically. A spark gap is provided in base of the block and is paired to the circuit breaker.