Skip to main content
Siemens 3VA1050-4ED32-0KC0 — Molded Case Circuit Breakers (MCCB)

Siemens SENTRON 3VA1050-4ED32-0KC0 MCCB, 50 A, 121 kA at 240

MPN3VA1050-4ED32-0KC0

Siemens SENTRON 3VA1050-4ED32-0KC0, 3-pole molded case circuit breaker, 50 A rated continuous current, 121 kA breaking capacity at 240 V AC, TM210 overcurrent release, shunt trip, 2 HQ auxiliary switches.

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

3VA1050-4ED32-0KC0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Product versionLine protection
Integrated auxiliary / alarm switch ref.3VA9988-0AA12
3VA1050-4ED32-0KC0 — Ratings
ParameterValue
Number of poles3
Current at 40 °C50 A
Current at 45 °C50 A
Current at 50 °C50 A
Current at 55 °C48 A
Current at 60 °C47 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 690 V11.9 kA
3VA1050-4ED32-0KC0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM210
3VA1050-4ED32-0KC0 — Construction & Connection
ParameterValue
Main circuit connection typelug terminal
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1050-4ED32-0KC0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerYes
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionNo
Auxiliary CO contacts2
3VA1050-4ED32-0KC0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1050-4ED32-0KC0 — Mechanical
ParameterValue
Height130 mm
Width76.2 mm
Depth70 mm

Product details

Line protection MCCB with TM210 release

At 415 V the interrupting rating is 75.6 kA, and at 690 V it drops to 11.9 kA, so verify the system voltage against the site's available fault current before specifying.

Current derating and thermal limits

Above that, derating begins: 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. For panels running warm — near drives or transformers — the 55 °C derating step is the first one that matters for sizing.

Integrated accessories and auxiliary contacts

Two HQ auxiliary switches are built in — these provide status feedback (open/closed/tripped) to a PLC or indication lamp without needing a separate auxiliary contact block.

Dimensions: 130 mm height, 76.2 mm width (3-pole standard), 70 mm depth. No trip indicator on the front — status is read from the auxiliary switches or the handle position. The shunt trip wiring must be run separately; verify polarity for the STL coil before energizing.

Frequently asked questions

Where can I buy 3VA1050-4ED32-0KC0 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here.

What are the key interrupting ratings for 3VA1050-4ED32-0KC0?

121 kA at 240 V AC, 75.6 kA at 415 V AC, 52.5 kA at 440 V AC, and 11.9 kA at 690 V AC. The 240 V rating is the highest — suitable for high-fault locations like main switchboards. Verify the system voltage and available fault current against these values.

Will 3VA1050-4ED32-0KC0 drop into a panel specified for 3VA1010-4ED32-0AC0?

The 3VA1050 frame shares the same 76.2 mm width and 130 mm height as the 3VA1010 frame, so the panel cutout and DIN-rail footprint are identical. The depth is 70 mm on both. Wiring terminals and accessory slots are the same. The only difference is the continuous current rating — 50 A vs 10 A — so the panel bus and cable sizing must support the higher current.

MPN
3VA1050-4ED32-0KC0