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Siemens 3VA1112-1AA32-0CA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1112-1AA32-0CA0 SENTRON Switch Disconnector, 125

MPN3VA1112-1AA32-0CA0

Siemens SENTRON 3VA1112-1AA32-0CA0, switch disconnector in MCCB design, 3-pole, 125 A, IEC frame 160, undervoltage release 120-127V AC 50/60Hz, busbar connection, front terminal.

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

3VA1112-1AA32-0CA0 — Identification
ParameterValue
Product designationSwitch disconnector
Brand / rangeSENTRON
3VA1112-1AA32-0CA0 — Ratings
ParameterValue
Number of poles3
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C125 A
Current at 45 °C125 A
Current at 50 °C125 A
Current at 55 °C125 A
Current at 60 °C125 A
Current at 65 °C125 A
Current at 70 °C125 A
Power loss, max.38 W
3VA1112-1AA32-0CA0 — Construction & Connection
ParameterValue
Main circuit connection typebusbar connection
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1112-1AA32-0CA0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Motor drive optionYes
Auxiliary CO contacts0
3VA1112-1AA32-0CA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1112-1AA32-0CA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.15 000
Height130 mm
Width76.2 mm
Depth70 mm

Product details

That matters in a hot panel or a packed enclosure where the temperature climb is baked into the design. If control power drops, the UVR trips the disconnect open — standard for safety circuits that need to guarantee a load is isolated when the control voltage fails. No auxiliary contacts are fitted (0 CO contacts), and the auxiliary switch design is listed as "without.".

Physical fit and connection pattern

The main circuit connection is busbar-style, front-terminal arrangement.

This is a disconnect-only variant (no trip unit, no short-circuit protection). If your BOM line needs a 125 A 3-pole disconnect with a UVR in a 3VA frame, this is the exact order code.

Frequently asked questions

What is the closest functional second-source for 3VA1112-1AA32-0CA0?

The closest functional sibling is 3VA1112-5EF32-0CA0, which shares the same frame, same 125 A rating, and the same UVR option, but it is a full molded case circuit breaker with a TM240 thermal-magnetic trip — it provides overcurrent and short-circuit protection that this disconnect-only part does not. If you need a disconnect without protection, stick with this order code.

Will 3VA1112-1AA32-0CA0 drop into a panel specified around 3VA1112-5EF32-0CA0 without rewiring?

The physical footprint is identical — 70 mm deep, 76.2 mm wide, 130 mm tall — so it fits the same panel cutout and DIN-rail or screw-mount pattern. However, the connection method differs: this part uses busbar connection (front terminal), while the peer uses lug terminal. If the panel wiring is terminated in lugs, you will need to adapt to busbar connections.

MPN
3VA1112-1AA32-0CA0