What this breaker is and what it carries
The Siemens 3VM1150-5EE42-0AA0 is a 4-pole IEC frame 160 molded-case circuit breaker rated 50 A with a TM220 thermal-magnetic release. Its interrupting capacity hits 55 kA at 415 V (breaking capacity class M), which means it can clear a high-fault bolted short without upstream devices needing to coordinate — useful on a 400 V distribution board feeding motor control centers or a pulp-and-paper line where fault currents run high.
Compliance and documentation
RoHS compliant since 01-06-12, and REACH Art. 33 declares lead (CAS 7439-92-1) above 0.1% w/w in the candidate list. Export controls are AL: N / ECCN: N — no special license required for standard industrial destinations.
Panel integration notes
Packaged dimensions 150 x 119 x 116 mm, shipped as a single piece. The nut keeper kit is included in the box — saves a trip to the hardware bin when mounting in a panel. No DIN-rail clip on this frame; it bolts directly to the backplate.