Part overview and key ratings
The Siemens 3VM1040-3ED36-0AA2 is a 3-pole circuit breaker from the 3VM1 IEC frame 100 series, rated for line protection with a TM210 thermal-magnetic trip unit. The fixed overload setting Ir=40A matches the nominal In=40A, and the short-circuit protection is fixed at Ii=10 x In (400A). The breaking capacity is class N with Icu=25kA at 415V AC — sufficient for most industrial distribution panels where fault levels stay under that threshold. The terminal connection style suits standard panel wiring.
Deployment context
Mounts on a DIN rail inside a standard IP54 or higher enclosure. The 3-pole configuration and fixed trip settings make it a straightforward fit for motor branch circuits or feeder protection in a panel where selectivity with downstream breakers is already coordinated.