Skip to main content
Log in
Siemens 3VA2450-0MS32-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2450-0MS32-0AA0 SENTRON MCCB, 500 A, ETU310M

MPN3VA2450-0MS32-0AA0
Active

Siemens SENTRON 3VA2450-0MS32-0AA0, molded case circuit breaker, 3-pole, 500 A continuous, ETU310M electronic trip unit, 440 kA breaking capacity at 415 V AC.

Siemens 3VA2450-0MS32-0AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3VA2450-0MS32-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA2450-0MS32-0AA0 — 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 °C495 A
Current at 60 °C490 A
Current at 65 °C485 A
Current at 70 °C480 A
Switching capacity classE
Breaking capacity at 415 V440 kA
Breaking capacity at 690 V187 kA
Power loss, max.99 W
3VA2450-0MS32-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU310M
Overcurrent protection functionI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA2450-0MS32-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2450-0MS32-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA2450-0MS32-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2450-0MS32-0AA0 — 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

The breaker carries a full thermal derating curve: it holds 500 A from 40 °C through 50 °C, then steps down 5 A per 5 °C increment to 480 A at 70 °C, so no derating penalty in a warm panel until you cross 55 °C.

The ETU310M is an electronic trip unit with adjustable overload and short-circuit settings. Minimum trip setting is 750 A, maximum is 6 000 A, giving a wide band for coordinating with downstream feeders or motor starting curves.

Front IP40 protection means it is suited for enclosed panel mounting where no water ingress is expected.

Frequently asked questions

What is the breaking capacity of 3VA2450-0MS32-0AA0 at 415 V?

440 kA at 415 V AC, and 187 kA at 690 V AC. This is the ultimate short-circuit breaking capacity (Icu) for the MCCB.

What trip unit does this MCCB use?

The ETU310M electronic overcurrent release, designed for motor protection applications. Adjustable from 750 A to 6 000 A.

Where can I buy 3VA2450-0MS32-0AA0 and how is it quoted?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time — submit an RFQ for a firm quote.

Will 3VA2450-0MS32-0AA0 fit a panel designed for 3VA2040-8HN42-0AA0?

The 3VA2450-0MS32-0AA0 uses a larger frame size than the 3VA2040 series (500 A vs lower current ratings). Physical dimensions differ — verify panel cutout and bus spacing before assuming drop-in compatibility.

MPN
3VA2450-0MS32-0AA0