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Siemens 3VA1225-1AA32-0DC0 — Molded Case Circuit Breakers (MCCB)

Siemens SENTRON 3VA1225-1AA32-0DC0 Switch Disconnector, 250

MPN3VA1225-1AA32-0DC0

Siemens SENTRON 3VA1 switch disconnector, IEC frame 250, 3-pole, SD100, In=250 A, without overload or short-circuit protection, undervoltage release 208-230 V AC 50/60 Hz, 2 auxiliary switches HQ, busbar connection, IP40 front.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3VA1225-1AA32-0DC0 — Identification
ParameterValue
Product designationSwitch disconnector
Brand / rangeSENTRON
Product versionin MCCB design
3VA1225-1AA32-0DC0 — Ratings
ParameterValue
Number of poles3
Current at 40 °C250 A
Current at 45 °C250 A
Current at 50 °C250 A
Current at 55 °C243 A
Current at 60 °C237 A
Current at 65 °C230 A
Current at 70 °C223 A
Power loss, max.57 W
3VA1225-1AA32-0DC0 — Construction & Connection
ParameterValue
Main circuit connection typebusbar connection
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1225-1AA32-0DC0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Motor drive optionYes
Auxiliary CO contacts2
3VA1225-1AA32-0DC0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1225-1AA32-0DC0 — Mechanical
ParameterValue
Height158 mm
Width105 mm
Depth70 mm

Product details

The 3VA1225-1AA32-0DC0: This switch disconnector carries an undervoltage release (UVR) coil rated 208-230 V AC 50/60 Hz and two auxiliary switches (HQ type, 2 CO contacts). It is intended for isolation and safety disconnection in distribution panels where a UVR is needed to trip on loss of control voltage. The front terminal arrangement accepts busbar connection, and the front face is IP40 rated.

Above that, derate linearly: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. This means the part can serve in warm enclosures without oversizing, as long as the continuous load stays under the derated curve. The 70 mm depth is shallower than many MCCB-sized disconnectors, which matters when panel depth is constrained. Mounting is via the front busbar connection — no rear terminals.

Frequently asked questions

What is the continuous current rating of this switch disconnector?

It is rated 250 A continuous at ambient temperatures from 40 °C up to 50 °C. Above that, it derates to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C.

Does this part include overload or short-circuit protection?

No. It is a switch disconnector only — no overload protection and no short-circuit protection. It must be paired with an upstream circuit breaker or fuse.

What auxiliary functions are built in?

It includes an undervoltage release (UVR) coil for 208-230 V AC 50/60 Hz and two auxiliary switches (HQ type, 2 CO contacts). There is no voltage trigger or communication function.

What are the panel cutout dimensions for 3VA1225-1AA32-0DC0?

The device is 105 mm wide, 158 mm high, and 70 mm deep. The front face is IP40 rated; connection is via front busbar terminals.

Where can I buy 3VA1225-1AA32-0DC0 and what is the lead time?

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

MPN
3VA1225-1AA32-0DC0