The PlusLink extension must be integrated into one or more PlusLink lines if these are protected by at least two circuit breakers. If a circuit breaker is triggered during maintenance work or in the event of a fault, the PlusLink extension automatically disconnects the PlusLink line. This is necessary because the PlusLink line would continue to be live via the other circuit breakers. Suitable for mounting on TH35 top hat rails in accordance with EN 60715. With screw terminals. Nominal voltage: AC 220/230 V. Neutral conductor: required (3-conductor system). Connection cross-section: max. 4 mm2. Device width: 1 HP = 18 mm.