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Siemens 3VA2450-7MN32-0BH0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2450-7MN32-0BH0 MCCB, 500 A, 3-Pole, ETU350M

MPN3VA2450-7MN32-0BH0

Siemens SENTRON 3VA2450-7MN32-0BH0, molded case circuit breaker, 3-pole, 500 A, ETU350M electronic trip unit, motor protection version, 330 kA at 240 V.

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

3VA2450-7MN32-0BH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Product versionMotor protection
Basic switch (supplied) ref.3VA2450-7MN32-0AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA2450-7MN32-0BH0 — Ratings
ParameterValue
Number of poles3
Current at 40 °C500 A
Current at 45 °C500 A
Current at 50 °C500 A
Current at 55 °C495 A
Current at 60 °C490 A
Current at 65 °C485 A
Current at 70 °C480 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 690 V52.5 kA
Power loss, max.101.5 W
3VA2450-7MN32-0BH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU350M
3VA2450-7MN32-0BH0 — Construction & Connection
ParameterValue
Main circuit connection typeLug terminal
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2450-7MN32-0BH0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts3
3VA2450-7MN32-0BH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2450-7MN32-0BH0 — Mechanical
ParameterValue
Height248 mm
Width138 mm
Depth110 mm

Product details

That 500 A holds flat through 50 °C — only starts to derate at 55 °C (495 A) and drops to 480 A by 70 °C, so it handles warm enclosures without a big margin hit. The interrupting ratings tell you where it clears faults: 330 kA at 240 V, 242 kA at 415 V and 440 V, and 52.5 kA at 690 V. It ships with an ETU350M electronic trip unit — that's the overcurrent release that gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves. The motor protection version means the trip unit is pre-configured for motor starting inrush and thermal memory, so it won't nuisance trip on a cold start. The UVR drops the breaker on loss of control voltage — standard for safety circuits where you need a guaranteed disconnect if the control supply fails. No ground-fault monitoring module is fitted, and there's no communication function onboard.

Panel integration and environment

Maximum power dissipation is 101.5 W — that's the heat you need to vent from the enclosure at full rated current. In a sealed panel with multiple breakers side by side, that heat adds up; plan for forced ventilation or a larger cabinet if you're running near 500 A continuously.

Frequently asked questions

Where can I buy the 3VA2450-7MN32-0BH0 and get a price?

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 quote.

What are the key interrupting ratings for this MCCB?

It interrupts 330 kA at 240 V, 242 kA at 415 V and 440 V, and 52.5 kA at 690 V. Those ratings cover high-fault applications like transformer secondaries and large busways.

Does this breaker include phase failure protection?

Yes, phase failure detection is built into the ETU350M trip unit. It will trip on a lost phase, protecting motors from single-phasing damage.

What auxiliary contacts are fitted?

It comes with 2 auxiliary switches plus 1 trip alarm switch in the HQ configuration, and an integrated undervoltage release.

MPN
3VA2450-7MN32-0BH0