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Siemens 3VA1112-5MH32-0CC0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1112-5MH32-0CC0 Circuit Breaker, 125A, 55kA @ 415

MPN3VA1112-5MH32-0CC0

Siemens 3VA1 IEC frame 160 MCCB, 3-pole, breaking capacity class M Icu=55kA @ 415V AC, In=125A, starter protection TM120M, AM, without overload protection, short-circuit protection Ii=5...15 x In, undervoltage release 120-127V AC 50/60Hz, 2 auxiliary switches HQ, nut keeper kit.

StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026

Product details

What this MCCB carries and what it doesn't

The Siemens 3VA1112-5MH32-0CC0 is a 3-pole IEC frame 160 molded case circuit breaker rated 125 A continuous, with a breaking capacity of 55 kA at 415 V AC — class M on the Siemens scale, meaning it sits above standard distribution duty and handles moderate industrial fault levels without cascading upstream. This is a starter-protection variant (TM120M thermal-magnetic release, AM characteristic) configured for short-circuit protection only — there is no built-in overload protection, so it pairs with a separate overload relay for motor branch circuits. The adjustable instantaneous trip range is 5 to 15 times In. The order code includes an undervoltage release (UVR) rated 120-127 V AC 50/60 Hz, two auxiliary switches (HQ type), and a nut keeper kit for the mounting hardware. The UVR drops the breaker on loss of control voltage — common for emergency-stop chains or undervoltage protection schemes.

Lifecycle and sourcing posture

For BOM-line commitments, the 3VA1112-5MH32-0CC0 is sourced and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time through independent supply channels.

Integration notes for panel builders

The 3VA1 frame mounts on a DIN rail or panel plate via the supplied nut keeper kit. The UVR coil draws continuously when energized; verify the control transformer sizing if the breaker shares a 120 V AC control bus with multiple UVRs. The two HQ auxiliary switches provide status feedback (open/closed/tripped) to a PLC or indication lamp. They are pre-wired with screw terminals; no additional terminal blocks needed for basic signaling.

Frequently asked questions

What does the 55 kA breaking capacity at 415 V mean for my panel?

The 55 kA Icu at 415 V AC means this breaker can safely interrupt fault currents up to 55,000 A without welding contacts or rupturing the case — sufficient for most industrial secondary distribution panels fed from a transformer rated up to about 2.5 MVA at 415 V.

Does this breaker include overload protection for a motor?

No — the TM120M release is configured for short-circuit protection only (instantaneous trip adjustable 5-15 x In). You must add a separate overload relay (e.g., Siemens 3RU2 or 3RB3) in series for thermal motor protection.

Where can I buy 3VA1112-5MH32-0CC0 and how is it quoted?

This MCCB is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here.

MPN
3VA1112-5MH32-0CC0