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Siemens 3VA1112-1AA32-0BC0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1112-1AA32-0BC0 SENTRON Switch Disconnector, 125

MPN3VA1112-1AA32-0BC0

Siemens SENTRON 3VA1112-1AA32-0BC0, switch disconnector in MCCB design, 3-pole, 125 A rated continuous current, with undervoltage release 24V DC, 2 auxiliary switches HQ, busbar front terminals.

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

Specifications

3VA1112-1AA32-0BC0 — Identification
ParameterValue
Product designationSwitch disconnector
Brand / rangeSENTRON
Product versionin MCCB design
3VA1112-1AA32-0BC0 — Ratings
ParameterValue
Number of poles3
Power loss, max.38 W
3VA1112-1AA32-0BC0 — Construction & Connection
ParameterValue
Main circuit connection typebusbar connection
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1112-1AA32-0BC0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Motor drive optionYes
Auxiliary CO contacts2
3VA1112-1AA32-0BC0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1112-1AA32-0BC0 — Mechanical
ParameterValue
Height130 mm
Width76.2 mm
Depth70 mm

Product details

Switch Disconnector for Isolation Duty

The 125 A Iu rating on the 160 A frame means it handles continuous load up to that current, with headroom in the frame for fault-withstand capability. The 2 kA limited-time rating (at 1 s and 0.5 s) confirms it can survive brief fault currents during upstream breaker coordination, but it does not self-interrupt a fault.

Undervoltage Release and Auxiliaries

The front-terminal busbar connection mates with SENTRON busbar systems for clean, low-profile panel wiring — no lug terminals to torque, which speeds assembly on a DIN-rail or mounting-plate layout. The 70 mm depth and 76.2 mm width match the 3VA MCCB footprint, so it drops into a panel designed for a 3VA breaker without re-spacing the gland plate.

Frequently asked questions

What is the difference between 3VA1112-1AA32-0BC0 and the 3VA1112-5EF32-0CA0 circuit breaker?

The 3VA1112-1AA32-0BC0 is a switch disconnector with no overcurrent protection — it isolates load but does not trip on overload or short circuit. The 3VA1112-5EF32-0CA0 is a full molded case circuit breaker (MCCB) with a TM240 thermal-magnetic release, rated for line protection up to 125 A with interrupting ratings up to 187 kA at 240 V. The mechanical dimensions (70×76.2×130 mm) and frame size are identical, so the disconnector can replace the MCCB in a panel only if upstream protection already covers the fault duty — never as a drop-in substitute for a breaker that provides branch-circuit pr

Where can I buy 3VA1112-1AA32-0BC0 and how is it quoted?

This part is sourced to order through independent industrial-automation distribution against an RFQ. Availability and current pricing are confirmed at quote time — no stock or price is published here. Submit an RFQ for a firm quote with lead time.

MPN
3VA1112-1AA32-0BC0