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Siemens 3VA2125-7MN36-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2125-7MN36-0AA0 SENTRON MCCB, 25 A, 3-Pole, Motor

MPN3VA2125-7MN36-0AA0
Active

Siemens SENTRON 3VA2125-7MN36-0AA0, molded case circuit breaker, 3-pole, 25 A, motor protection design, adjustable trip class 10A/10E/20E.

Siemens 3VA2125-7MN36-0AA0 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

3VA2125-7MN36-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA2125-7MN36-0AA0 — 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 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
3VA2125-7MN36-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU350M
Overcurrent protection functionLSI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA2125-7MN36-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typedouble-sided box terminal
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2125-7MN36-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA2125-7MN36-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2125-7MN36-0AA0 — 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

Rated 25 A continuous at up to 70 °C ambient without derating, it holds its full current rating across the entire operating temperature range. That means no up-tower swaps if the panel gets hot in summer. The adjustable trip class (10A, 10E, or 20E) lets you match the breaker to the motor start profile: 10A for short starts like pumps, 20E for high-inertia loads like fans or centrifuges.

Breaking capacity and voltage ratings

Breaking capacity is voltage-dependent: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V.

Environmental and physical fit

Power loss is only 0.6 W maximum, negligible for panel thermal budgeting.

Frequently asked questions

How do I get current pricing and availability for 3VA2125-7MN36-0AA0?

Submit an RFQ through this listing. We source through independent distribution and confirm current pricing and availability at quote time.

What is the closest functional second-source to 3VA2125-7MN36-0AA0?

The 3VA2040-8HN42-0AA0 is a peer in the same SENTRON family, but it's a 4-pole breaker with a different trip curve. For a direct 3-pole motor-protection swap, the 3VA2125-8KQ42-0AA0 or 3VA2140-8JQ32-0AA0 are closer functional matches — verify the trip class and current rating against your load.

What is 3VA2125-7MN36-0AA0's listed depth?

The depth is 86 mm (3.39 in).

What is 3VA2125-7MN36-0AA0's listed width?

The width is 105 mm (4.13 in).

Will 3VA2125-7MN36-0AA0 drop into a panel specified around 3VA2040-8HN42-0AA0 without rewiring?

No — the 3VA2040-8HN42-0AA0 is a 4-pole breaker; this is 3-pole. The footprint is similar (same SENTRON 3VA platform), but the pole count difference means you'd need to re-terminate the neutral and possibly adjust the bus bar arrangement. For a direct 3-pole swap, use the 3VA2125-8KQ42-0AA0 instead.

What compliance documentation does Siemens provide for 3VA2125-7MN36-0AA0?

Siemens typically provides RoHS and REACH declarations for SENTRON products, plus IEC/UL certifications. The specific documentation pack is available on request when you submit an RFQ.

MPN
3VA2125-7MN36-0AA0