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Siemens 3VA1050-4ED42-0CA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1050-4ED42-0CA0 SENTRON MCCB, 50A, 4-Pole, 121kA

MPN3VA1050-4ED42-0CA0

Siemens SENTRON 3VA1050-4ED42-0CA0, molded case circuit breaker, 4-pole, 50 A rated at 40 °C, TM210 thermal-magnetic trip, 121 kA breaking capacity at 240 V AC.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3VA1050-4ED42-0CA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA10504ED420AA0
3VA1050-4ED42-0CA0 — Ratings
ParameterValue
Number of poles4
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C50 A
Current at 45 °C50 A
Current at 50 °C50 A
Current at 55 °C49 A
Current at 60 °C48 A
Current at 65 °C46 A
Current at 70 °C45 A
Switching capacity classS
Breaking capacity at 240 V121 kA
Breaking capacity at 415 V75.6 kA
Breaking capacity at 440 V52.5 kA
Breaking capacity at 500 V11.9 kA
Breaking capacity at 690 V11.9 kA
Power loss, max.17.1 W
3VA1050-4ED42-0CA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM210
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1050-4ED42-0CA0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1050-4ED42-0CA0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionNo
Auxiliary CO contacts0
3VA1050-4ED42-0CA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1050-4ED42-0CA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height130 mm
Width101.6 mm
Depth70 mm
Height (in)5.12 in
Width (in)4 in
Depth (in)2.76 in

Product details

With 4 poles and a TM210 thermal-magnetic trip unit, it handles 50 A continuously at 40 °C and can break up to 121 kA at 240 V AC — that's the interrupting capacity you need for high-fault service-entrance or sub-distribution applications where the available fault current is substantial.

The interrupting rating drops as voltage rises: 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 11.9 kA floor at 690 V is the number to check if you're feeding a 690 V motor control center — it's still adequate for most industrial MCC applications, but verify your worst-case bolted-fault calculation against that figure.

Temperature derating and continuous current

Above that, it steps down: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C.

Built-in undervoltage release

No separate UVR module to wire in.

Physical fit in the panel

Dimensions are 101.6 mm wide, 130 mm tall, and 70 mm deep — a standard 4-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures.

Frequently asked questions

Where can I buy 3VA1050-4ED42-0CA0 and what is the lead time?

This part is sourced and quoted to order against an RFQ through our independent distribution channel. Availability and current pricing are confirmed at quote time — submit an RFQ for your specific quantity and delivery needs.

What is the breaking capacity of 3VA1050-4ED42-0CA0 at 415 V?

At 415 V AC, the breaking capacity is 75.6 kA. At 240 V it is 121 kA, and at 690 V it is 11.9 kA.

What trip unit does this MCCB have?

It uses a TM210 thermal-magnetic overcurrent release — a fixed-trip design with thermal protection for overloads and magnetic protection for short circuits. No electronic adjustment.

Does 3VA1050-4ED42-0CA0 include an undervoltage release?

Yes, it ships with an undervoltage release (UVR) integrated. The auxiliary release type is undervoltage release, so the breaker trips automatically on loss of control voltage.

MPN
3VA1050-4ED42-0CA0