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Siemens 3VA2125-7HL42-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2125-7HL42-0AA0 SENTRON MCCB, 25 A, 4-Pole, 330 k

MPN3VA2125-7HL42-0AA0
Active

Siemens SENTRON 3VA2 series, molded case circuit breaker, 3VA2125-7HL42-0AA0, 4-pole, 25 A, ETU320 electronic trip unit, 330 kA at 240 V.

Siemens 3VA2125-7HL42-0AA0 datasheet (PDF)
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

3VA2125-7HL42-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Product versionLine protection
3VA2125-7HL42-0AA0 — Ratings
ParameterValue
Number of poles4
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C25 A
Current at 45 °C25 A
Current at 50 °C25 A
Current at 55 °C25 A
Current at 60 °C25 A
Current at 65 °C25 A
Current at 70 °C25 A
Switching capacity classC
Breaking capacity at 240 V330 kA
Breaking capacity at 415 V242 kA
Breaking capacity at 440 V242 kA
Breaking capacity at 500 V187 kA
Breaking capacity at 690 V3.7 kA
Power loss, max.0.6 W
3VA2125-7HL42-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU320
Overcurrent protection functionLI
Ground-fault monitoringWithout
3VA2125-7HL42-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2125-7HL42-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA2125-7HL42-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2125-7HL42-0AA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.25 000
Height181 mm
Width140 mm
Depth86 mm
Height (in)7.13 in
Width (in)5.51 in
Depth (in)3.39 in

Product details

That flat thermal curve simplifies panel design — one device covers a warm cabinet without recalculating the load schedule. Its 4-pole construction handles three-phase plus neutral, with the N-conductor protection adjustable to OFF or 100 % of the phase rating. The ETU320 electronic trip unit provides selectable overload and short-circuit curves, giving the integrator precision over coordination with downstream breakers. Breaking capacity is the headline: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V.

Panel fit and physical integration

If your BOM requires shunt trip or remote status, plan for an accessory add-on or step up to a 3VA2 variant with those features built in.

Frequently asked questions

Where can I buy 3VA2125-7HL42-0AA0?

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

What are the key ratings of 3VA2125-7HL42-0AA0?

It is a 4-pole MCCB rated 25 A continuous with no derating from 40 °C to 70 °C. Breaking capacity reaches 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. The electronic trip unit is an ETU320.

Will 3VA2125-7HL42-0AA0 drop into a panel specified around 3VA2025-8HN42-0AA0?

Both are 3VA2-series 4-pole MCCBs with the same 140 mm width, 181 mm height, and 86 mm depth — the mounting footprint and bus-bar centers are identical. The difference is the trip unit: the 3VA2125-7HL42-0AA0 carries an ETU320 electronic trip, while the 3VA2025-8HN42-0AA0 uses a different release design. Wiring connections land in the same positions, so no re-drilling or re-bussing is needed.

MPN
3VA2125-7HL42-0AA0