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Siemens 3VA2125-0HN32-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2125-0HN32-0AA0 SENTRON MCCB, 25 A, ETU350, 440 k

MPN3VA2125-0HN32-0AA0
Active

Siemens SENTRON molded case circuit breaker, 3VA2125-0HN32-0AA0, 3-pole, 25 A, ETU350 electronic trip unit, 440 kA at 415 V AC, IP40 front.

Siemens 3VA2125-0HN32-0AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3VA2125-0HN32-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA2125-0HN32-0AA0 — Ratings
ParameterValue
Number of poles3
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 classE
Breaking capacity at 415 V440 kA
Breaking capacity at 690 V187 kA
Power loss, max.0.5 W
3VA2125-0HN32-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU350
Overcurrent protection functionLSI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA2125-0HN32-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2125-0HN32-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA2125-0HN32-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2125-0HN32-0AA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.25 000
Height181 mm
Width105 mm
Depth86 mm
Height (in)7.13 in
Width (in)4.13 in
Depth (in)3.39 in

Product details

That's the kind of fault-current headroom that lets you use this breaker downstream of a large transformer or a high-capacity bus without worrying about cascading failure.

The 25 A continuous rating holds flat across the full ambient range — 25 A at 40 °C, 45 °C, all the way up to 70 °C. No derating curve to chase; that's a solid spec for a warm panel or a high-ambient machine cell. Line protection design, no ground-fault monitoring, no undervoltage release fitted. Insulation voltage rated 800 V, operating voltage up to 690 V AC.

Panel integration

That's a 3-pole frame that bolts into the SENTRON 3VA base plate or DIN-rail adapter.

Frequently asked questions

How do I get current pricing and availability for 3VA2125-0HN32-0AA0?

Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels. No stock count or price is published here.

What's the interrupting rating of 3VA2125-0HN32-0AA0?

440 kA at 415 V AC, 187 kA at 690 V AC. That's the rated ultimate short-circuit breaking capacity (Icu) — sufficient for high-fault installations downstream of large transformers.

What does the ETU350 trip unit do?

The ETU350 is an electronic overcurrent release with adjustable long-time, short-time, and instantaneous protection settings. It replaces fixed thermal-magnetic curves with field-configurable trip thresholds for better coordination selectivity.

MPN
3VA2125-0HN32-0AA0