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Siemens 3VA1450-4EF42-0DA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1450-4EF42-0DA0 SENTRON MCCB, 500 A, 4-Pole, 121

MPN3VA1450-4EF42-0DA0

Siemens SENTRON 3VA1450-4EF42-0DA0, molded case circuit breaker, 4-pole, 500 A rated at 40 °C, breaking capacity 121 kA at 240 V, TM240 overcurrent release, undervoltage release.

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

Specifications

3VA1450-4EF42-0DA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA14504EF420AA0
3VA1450-4EF42-0DA0 — Ratings
ParameterValue
Number of poles4
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 classS
Breaking capacity at 240 V121 kA
Breaking capacity at 415 V75.6 kA
Breaking capacity at 440 V75.6 kA
Breaking capacity at 500 V52.5 kA
Breaking capacity at 690 V11.9 kA
Power loss, max.125.2 W
3VA1450-4EF42-0DA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1450-4EF42-0DA0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1450-4EF42-0DA0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA1450-4EF42-0DA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1450-4EF42-0DA0 — 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

The Siemens SENTRON 3VA1450-4EF42-0DA0 is a 4-pole molded case circuit breaker (MCCB) rated 500 A at 40 °C, with a TM240 thermal-magnetic overcurrent release and an integrated undervoltage release (UVR). Its interrupting capacity hits 121 kA at 240 V and 75.6 kA at 415 V, so it handles high-fault utility feeds or transformer secondaries without cascading upstream.

The 4-pole design suits three-phase plus neutral or switched-neutral applications; the UVR coil drops the breaker on undervoltage, common for emergency-stop or mains-monitoring circuits.

MPN
3VA1450-4EF42-0DA0