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Siemens 3VA1125-5GF42-0AA0-ZD00 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1125-5GF42-0AA0-ZD00 Circuit Breaker, 55kA @ 415V

MPN3VA1125-5GF42-0AA0-ZD00

Siemens 3VA1 IEC frame 160, 4-pole MCCB, breaking capacity class M, Icu=55kA @ 415V, line protection TM240, ATAM, In=25A, Ir=18A...25A, Ii=6.4...12.8 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.

Siemens 3VA1125-5GF42-0AA0-ZD00 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Product details

The Siemens 3VA1125-5GF42-0AA0-ZD00 is a 4-pole molded case circuit breaker on the IEC 160 A frame, rated for 55 kA breaking capacity at 415 V AC — that is the Icu (ultimate breaking capacity) under class M, meaning it can safely interrupt a fault up to that level once and still carry rated current afterward. For a 25 A line protection breaker, that is serious fault-current headroom; it stays coordinated with downstream devices without cascading upstream. Overload protection is adjustable: Ir from 18 A to 25 A via the TM240 thermal-magnetic trip unit. Short-circuit pickup Ii spans 6.4 to 12.8 times In, so at the 25 A setting that is 160 to 320 A magnetic trip. The 100% N-conductor protection means the neutral pole is fully rated — no derating needed for unbalanced loads or harmonic-rich circuits. The frame is the standard 3VA1 160 A platform, so it mounts in the same panel cutouts and bus-bar arrangements as other 3VA1 breakers.

Frequently asked questions

What is the breaking capacity of this breaker?

Icu is 55 kA at 415 V AC, class M. That is the ultimate short-circuit capacity the breaker can interrupt once and still be functional afterward.

What overload and short-circuit settings does it have?

Overload protection Ir is adjustable from 18 A to 25 A. Short-circuit pickup Ii is adjustable from 6.4 to 12.8 times In (160 to 320 A at the 25 A setting).

Where can I buy the 3VA1125-5GF42-0AA0-ZD00 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3VA1125-5GF42-0AA0-ZD00