What the ratings mean for fit
The Siemens 3VM1140-4GE42-0AA0 is a 4-pole circuit breaker from the 3VM1 IEC frame 160 family, rated 40 A continuous with a breaking capacity of 36 kA at 415 V AC (class S). That 36 kA SCCR means it can safely interrupt a fault current up to that level without upstream devices needing to coordinate — a key number for panel SCCR labeling under UL 508A or IEC 61439. The TM220 thermal-magnetic trip unit gives an overload protection range of 28 A to 40 A (Ir adjustable) and a fixed short-circuit pickup at 10 x In (400 A). The 100% N conductor protection means the neutral pole is fully rated, not reduced — important for 4-wire systems where neutral loading is non-trivial.
Compliance and documentation
RoHS compliant since 01 June 2012. REACH Article 33 disclosure: contains Lead (CAS-No. 7439-92-1) above 0.1% w/w in the candidate list. Export control classification is AL: N / ECCN: N — no special licensing required for most destinations. The nut keeper kit is included; note that for products not manufactured in China, only CE and EEQCO Scheme-X certifications are available.