What it is and what it does
The Siemens 3VM1150-4EE42-0AA0 is a 4-pole IEC molded-case circuit breaker from the 3VM1 frame-160 series, rated 50 A with a breaking capacity class S — 36 kA at 415 V. The TM220 thermal-magnetic trip unit provides line protection: overload pickup adjustable from 35 A to 50 A (Ir), and fixed short-circuit pickup at 10 × In (500 A). The N conductor is unprotected, and the breaker ships with a nut keeper kit for panel mounting.
Compliance and substance restrictions
RoHS compliant since 01-06-12. REACH Article 33 duty to inform: the part contains lead (CAS 7439-92-1) above 0.1 % w/w in the candidate list. Export control: AL N / ECCN N — no special licensing required.