Miniature circuit breaker 400V 25kA, 4-pole, 25A, T=70mm, magnetic release only. Miniature circuit breaker SENTRON 5SY for safe short-circuit protection in IT networks, e.g. in hospitals. Tool-free assembly and disassembly of the device. Any combination of conductors and busbar thanks to double-chamber terminal. Simple wiring of the feed through the busbar at the rear. The 5SY miniature circuit breakers for IT networks are available in 2-, 3- and 4-pole versions. All accessories can be used uniformly for all 5SY miniature circuit breakers. Simply safe with the protective devices from SENTRON.