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Siemens 3VA2450-6KQ42-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2450-6KQ42-0AA0 SENTRON MCCB, 500 A, 4-Pole, 242

MPN3VA2450-6KQ42-0AA0
Active

Siemens SENTRON 3VA2450-6KQ42-0AA0, molded case circuit breaker, 4-pole, 500 A, 242 kA at 240 V, ETU860 electronic trip unit, ground-fault monitoring, IP40 front.

Siemens 3VA2450-6KQ42-0AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3VA2450-6KQ42-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Product versionLine protection
3VA2450-6KQ42-0AA0 — Ratings
ParameterValue
Number of poles4
Current at 40 °C500 A
Current at 45 °C500 A
Current at 50 °C500 A
Current at 55 °C477 A
Current at 60 °C455 A
Current at 65 °C432 A
Current at 70 °C410 A
Switching capacity classH
Breaking capacity at 240 V242 kA
Breaking capacity at 415 V187 kA
Breaking capacity at 440 V187 kA
Breaking capacity at 500 V121 kA
Breaking capacity at 690 V9 kA
Power loss, max.99 W
3VA2450-6KQ42-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU860
Overcurrent protection functionLSIG
Ground-fault monitoringSummation current formation L + N conductor
3VA2450-6KQ42-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2450-6KQ42-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionYes
Measurement functionYes
Motor drive optionYes
Auxiliary CO contacts0
3VA2450-6KQ42-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2450-6KQ42-0AA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height248 mm
Width184 mm
Depth110 mm
Height (in)9.76 in
Width (in)7.24 in
Depth (in)4.33 in

Product details

What this 500 A MCCB delivers

It carries a continuous current Iu of 500 A at 40 °C, with full 500 A rating holding through 50 °C — no derating needed in a typical 40 °C panel ambient. Breaking capacity is the headline: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. The ETU860 electronic trip unit handles overcurrent protection with ground-fault monitoring via summation current formation on L + N. Communication function is built in, so you can integrate status and trip data into a BMS or plant SCADA without an add-on module.

Frequently asked questions

What is the breaking capacity of this MCCB at 415 V?

187 kA at 415 V, which also holds at 440 V. At 240 V it reaches 242 kA, at 500 V it's 121 kA, and at 690 V it's 9 kA.

What trip unit does 3VA2450-6KQ42-0AA0 use?

The ETU860 electronic overcurrent release, with ground-fault monitoring via summation current on L + N. It also includes a communication function for remote status.

Where can I buy 3VA2450-6KQ42-0AA0?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Does this breaker include ground-fault protection?

Yes, the ETU860 release provides ground-fault monitoring using summation current formation on the L + N conductors.

MPN
3VA2450-6KQ42-0AA0