Miniature circuit breaker 400V 6kA, 3-pole, B, 40A Miniature circuit breaker SENTRON 5SL for safe short-circuit and overload protection for standard applications in residential and commercial buildings. Tool-free assembly and disassembly of the device. Simple wiring of the feed through the rear busbar. The 5SL miniature circuit breakers are available in 1-, 2-, 3-, 4-, 1+N and 3+N-pole versions as well as other special types. The extensive range of accessories, such as auxiliary switches, enables the functions to be expanded in many ways. Simply safe with the protective devices from SENTRON.