The Siemens 5SV5442-0 is a 4-pole residual current operated circuit breaker (RCCB), type AC, rated at 40 A with a 100 mA trip sensitivity on a 400 V AC supply. This is a standard-size unit for distribution boards and sub-distribution panels, protecting against earth faults in circuits feeding general-purpose loads like lighting, socket outlets, and small equipment where sinusoidal AC fault currents are expected.
RoHS compliant since June 1, 2006. REACH Article 33 duty to inform applies due to lead content above 0.1% w/w, CAS-No. 7439-92-1 — factor this into downstream EU market compliance reporting.