Skip to main content
Siemens 3VA1450-4EF42-0AA0 — Molded Case Circuit Breakers (MCCB)

SENTRON 3VA1450-4EF42-0AA0 MCCB, 500 A, 4-Pole, TM240

MPN3VA1450-4EF42-0AA0
Active

SENTRON 3VA series, molded case circuit breaker, line protection, 4-pole, 500 A at 40 °C, TM240 overcurrent release, 121 kA interrupting at 240 V, 3VA1450-4EF42-0AA0.

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

Specifications

3VA1450-4EF42-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA1450-4EF42-0AA0 — 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.122.7 W
3VA1450-4EF42-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1450-4EF42-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1450-4EF42-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA1450-4EF42-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1450-4EF42-0AA0 — 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

At 45 °C and 50 °C it still holds 500 A; above that it steps down to 488 A at 55 °C, 476 A at 60 °C, 464 A at 65 °C, and 452 A at 70 °C. Interrupting capacity is 121 kA at 240 V, 75.6 kA at 415 V and 440 V, 52.5 kA at 500 V, and 11.9 kA at 690 V. It mounts in a panel with a 184 mm width, 248 mm height, and 110 mm depth. Front protection is IP40.

Panel integration: the 184 mm width and 110 mm depth fit a standard MCCB cutout. If the BOM calls for aux contacts or remote trip, you need the accessory kit separately.

Frequently asked questions

What is the interrupting capacity of 3VA1450-4EF42-0AA0 at 240 V?

121 kA at 240 V. At 415 V and 440 V it is 75.6 kA, at 500 V it is 52.5 kA, and at 690 V it is 11.9 kA.

What does the TM240 designation mean on this breaker?

TM240 is a thermal-magnetic overcurrent release. The thermal element handles overloads; the magnetic element handles short-circuits. This version is designed for line protection, not motor or generator protection.

Where can I buy 3VA1450-4EF42-0AA0?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3VA1450-4EF42-0AA0