Skip to main content
Log in
Siemens 3VA1112-5MH32-0BC0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1112-5MH32-0BC0 Circuit Breaker, 125A, 55kA @ 415

MPN3VA1112-5MH32-0BC0

Siemens 3VA1 IEC frame 160, breaking capacity class M, 3-pole, In=125A, Icu=55kA @ 415V, TM120M trip unit, undervoltage release 24V DC, 2 auxiliary switches HQ, nut keeper kit.

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

What this 3VA1 MCCB carries

The Siemens 3VA1112-5MH32-0BC0 is a 3-pole IEC molded-case circuit breaker on the 160 A frame, rated 125 A continuous with a TM120M thermal-magnetic trip unit. This variant is configured for starter protection (motor branch circuit) with adjustable short-circuit pickup Ii = 5...15 × In. It ships without overload protection — the TM120M provides the magnetic-only function, so a separate overload relay handles the thermal curve for the motor. The nut keeper kit keeps the terminal hardware captive during panel wiring.

Integrated accessories

The aux switches report breaker position back to the PLC or status panel — one for open/closed, the second for trip signal if needed.

Frequently asked questions

What does the TM120M trip unit mean for motor protection?

The TM120M is a thermal-magnetic trip unit set for 125 A. On this variant it provides magnetic-only (short-circuit) protection with adjustable pickup from 5× to 15× In. There is no overload protection built in — you must pair it with a separate overload relay for the motor thermal curve.

Where can I buy the 3VA1112-5MH32-0BC0?

This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm response.

MPN
3VA1112-5MH32-0BC0