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Siemens 3VA2140-8KP42-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2140-8KP42-0AA0 SENTRON MCCB, 40 A, 4-Pole, 440 k

MPN3VA2140-8KP42-0AA0
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Siemens SENTRON 3VA2140-8KP42-0AA0, molded case circuit breaker, 4-pole, 40 A rated continuous current, line protection version, ETU850 electronic trip unit, 440 kA breaking capacity at 240 V.

Siemens 3VA2140-8KP42-0AA0 datasheet (PDF)
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

3VA2140-8KP42-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Product versionLine protection
3VA2140-8KP42-0AA0 — Ratings
ParameterValue
Number of poles4
Current at 40 °C40 A
Current at 45 °C40 A
Current at 50 °C40 A
Current at 55 °C40 A
Current at 60 °C40 A
Current at 65 °C40 A
Current at 70 °C40 A
Switching capacity classL
Breaking capacity at 240 V440 kA
Breaking capacity at 415 V330 kA
Breaking capacity at 440 V330 kA
Breaking capacity at 500 V220 kA
Breaking capacity at 690 V53 kA
Power loss, max.1.2 W
3VA2140-8KP42-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU850
3VA2140-8KP42-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeLug terminal
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2140-8KP42-0AA0 — Accessories & Functions
ParameterValue
Communication functionYes
Measurement functionYes
Motor drive optionYes
Auxiliary CO contacts0
3VA2140-8KP42-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-40 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2140-8KP42-0AA0 — Mechanical
ParameterValue
Height181 mm
Width140 mm
Depth86 mm
Height (in)7.1 in
Width (in)5.5 in
Depth (in)3.4 in

Product details

The 4-pole design handles three-phase plus neutral, with the N-conductor protection adjustable OFF or from 40 % to 160 % of the phase setting, so it suits both solidly-grounded and impedance-grounded systems. The interrupting ratings are the headline here: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 53 kA at 690 V. The ETU850 release gives adjustable long-time delay (tr) from 0.5 to 25 seconds, letting you coordinate selectively with downstream breakers.

Front IP40 protection means it's splash-resistant on the operator side but not sealed against dust ingress into the enclosure; keep it behind a panel door in dirty environments.

Frequently asked questions

Where can I buy 3VA2140-8KP42-0AA0 and how is it quoted?

We source and quote this part to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is the closest functional second-source to 3VA2140-8KP42-0AA0?

The 3VA2140-8JQ42-0AA0 is the closest peer — same 4-pole, 40 A frame, same ETU850 release. The difference is in the accessory slot configuration; the 8JQ42 variant lacks the communication function that the 8KP42 carries onboard. If you don't need comms, the 8JQ42 drops into the same panel footprint without rewiring.

What is the depth of 3VA2140-8KP42-0AA0?

The depth is 86 mm (3.4 in), measured from the mounting surface to the back of the breaker body.

What is the width of 3VA2140-8KP42-0AA0?

The width is 140 mm (5.5 in), which is the standard 4-pole MCCB footprint for this SENTRON frame size.

Will 3VA2140-8KP42-0AA0 drop into a panel specified around 3VA2140-8JQ42-0AA0 without rewiring?

Yes — the physical dimensions (140 mm wide, 181 mm high, 86 mm deep) are identical between the two order codes. The mounting hole pattern and busbar connections are the same, so it's a direct mechanical swap. The only functional difference is the onboard communication module on the 8KP42 variant.

MPN
3VA2140-8KP42-0AA0