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Siemens 3VA2040-5KQ32-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2040-5KQ32-0AA0 SENTRON MCCB, 40 A, 187 kA at 240

MPN3VA2040-5KQ32-0AA0
Active

Siemens SENTRON 3VA2040-5KQ32-0AA0, molded case circuit breaker, 3-pole, 40 A rated continuous current, line protection, breaking capacity 187 kA at 240 V, 121 kA at 415 V, 105 mm width, 86 mm depth, 181 mm height.

Siemens 3VA2040-5KQ32-0AA0 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

3VA2040-5KQ32-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA2040-5KQ32-0AA0 — Ratings
ParameterValue
Number of poles3
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
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 classM
Breaking capacity at 240 V187 kA
Breaking capacity at 415 V121 kA
Breaking capacity at 440 V121 kA
Breaking capacity at 500 V75.6 kA
Breaking capacity at 690 V3 kA
Power loss, max.2.2 W
3VA2040-5KQ32-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU860
Overcurrent protection functionLSIG
Ground-fault monitoringSummation current formation L-conductor
Grounding protection functionYes
3VA2040-5KQ32-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2040-5KQ32-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionYes
Measurement functionYes
Motor drive optionYes
Auxiliary CO contacts0
3VA2040-5KQ32-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2040-5KQ32-0AA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.25 000
Height181 mm
Width105 mm
Depth86 mm
Height (in)7.13 in
Width (in)4.13 in
Depth (in)3.39 in

Product details

The Siemens 3VA2040-5KQ32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous current across the full operating temperature range of -25 °C to 70 °C — no derating needed up to 70 °C, which simplifies panel design in warm cabinets or outdoor enclosures. The breaking capacity hits 187 kA at 240 V AC and still delivers 121 kA at 415 V and 440 V, so it handles high-fault utility feeds or transformer secondaries without needing a current-limiting fuse upstream.

The breaker includes a communication function and a ground-fault monitoring version using summation current formation on the L-conductor, which allows integration with a BMS or PLC for remote trip indication and leakage monitoring.

MPN
3VA2040-5KQ32-0AA0