The Siemens 3VM1140-4EE46-0AA2 is a 4-pole IEC circuit breaker from the 3VM1 series, rated at 40 A with a breaking capacity of 36 kA at 415 V AC. This is the class S frame, which means it handles standard industrial fault levels without needing an upstream current-limiting device for most panel feeds. Overload protection is adjustable via the TM220 thermal-magnetic trip unit: Ir is settable from 28 A to 40 A, matching the conductor or load requirement. Short-circuit magnetic pickup is fixed at 10 x In (400 A), which is a typical setting for feeder or distribution circuits where high inrush (like motor starting) is not expected. The N conductor is unprotected — the breaker switches the neutral but does not include an overload or short-circuit element on that pole.
Siemens 3VM1140-4EE46-0AA2 Circuit Breaker, 40A, 36kA @ 415V
MPN3VM1140-4EE46-0AA2
Siemens 3VM1 IEC frame 160, breaking capacity class S, Icu=36kA @ 415V, 4-pole, line protection TM220, ATFM, In=40A, overload Ir=28A...40A, short-circuit Ii=10 x In, N conductor unprotected, terminal connection.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
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Frequently asked questions
What does the 36 kA breaking capacity at 415 V mean for my panel?
The Icu of 36 kA at 415 V means the breaker can safely interrupt a fault current up to that level without damage, which covers most industrial distribution panels fed from a transformer of typical size. It is the class S rating — standard breaking capacity for general-purpose feeder protection.
MPN
3VM1140-4EE46-0AA2