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Siemens 3VA1450-6EF32-0DF0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1450-6EF32-0DF0 SENTRON MCCB, 500 A, 3-Pole, 220

MPN3VA1450-6EF32-0DF0

Siemens SENTRON 3VA1450-6EF32-0DF0, molded case circuit breaker, 3-pole, 500 A rated current at 40 °C, TM240 overcurrent release, breaking capacity 220 kA at 240 V AC, with undervoltage release and auxiliary switch.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3VA1450-6EF32-0DF0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA14506EF320AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1450-6EF32-0DF0 — Ratings
ParameterValue
Number of poles3
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C500 A
Current at 45 °C500 A
Current at 50 °C500 A
Current at 55 °C488 A
Current at 60 °C476 A
Current at 65 °C464 A
Current at 70 °C452 A
Switching capacity classH
Breaking capacity at 240 V220 kA
Breaking capacity at 415 V154 kA
Breaking capacity at 440 V154 kA
Breaking capacity at 500 V121 kA
Breaking capacity at 690 V17 kA
Power loss, max.125.2 W
3VA1450-6EF32-0DF0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1450-6EF32-0DF0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1450-6EF32-0DF0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts2
3VA1450-6EF32-0DF0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1450-6EF32-0DF0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height248 mm
Width138 mm
Depth110 mm
Height (in)9.76 in
Width (in)5.43 in
Depth (in)4.33 in

Product details

Siemens 3VA1450-6EF32-0DF0 — 500 A SENTRON MCCB with TM240 release

Breaking capacity is 220 kA at 240 V AC, 154 kA at 415 V and 440 V, 121 kA at 500 V, and 17 kA at 690 V. The 17 kA at 690 V still covers most industrial 690 V motor control centers.

Internal accessories and release configuration

The auxiliary switch provides a remote status signal; the trip alarm switch signals only on a fault trip, not on manual opening. The supplied basic switch is order code 3VA14506EF320AA0 — that is the base breaker without the UVR and auxiliary switch. If you already have a 3VA1450-6EF32-0AA0 in the panel, this -0DF0 variant is a drop-in replacement with the same footprint and the added release and signaling.

Thermal derating and ambient temperature range

Above that, derate linearly: 488 A at 55 °C, 476 A at 60 °C, 464 A at 65 °C, 452 A at 70 °C. If your panel ambient runs at 60 °C, you lose 24 A of headroom — still enough for a 450 A continuous load, but verify against the connected load's FLA.

Frequently asked questions

What internal accessories come with this MCCB?

Factory-installed undervoltage release (UVR) plus one auxiliary switch and one trip alarm switch (HQ configuration). The base breaker without these is order code 3VA14506EF320AA0.

What are the physical dimensions of 3VA1450-6EF32-0DF0?

Depth 110 mm (4.33 in), width 138 mm (5.43 in), height 248 mm (9.76 in). These are the breaker body dimensions — allow clearance for the handle throw and cable bending radius.

MPN
3VA1450-6EF32-0DF0