Siemens 3VA1 IEC frame 160, 4-pole molded case circuit breaker, breaking capacity class N, Icu=25kA @ 415V, TM240 overload protection, In=40A, Ir=28A...40A, Ii=5...10 x In, N conductor unprotected, nut keeper kit for DC Power OEM in China.
The TM240 thermal-magnetic trip unit provides adjustable overload protection (Ir) from 28A to 40A, with a fixed In of 40A. This specific order code includes a nut keeper kit and is designated for DC Power OEM in China — the kit keeps hardware captive during panel assembly, a detail that matters if you're building pre-wired DC power distribution sections.
The 4-pole form factor suits 3-phase + N distribution boards or DC power distribution where a switched neutral is required.
Overload protection Ir is adjustable from 28A to 40A via the TM240 thermal-magnetic trip unit. Short-circuit protection Ii is adjustable from 5 to 10 times In (200A to 400A at the 40A In setting).
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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