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Siemens 3VA2340-4HM32-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2340-4HM32-0AA0 SENTRON MCCB, 400 A, 3-Pole

MPN3VA2340-4HM32-0AA0

Siemens SENTRON 3VA2340-4HM32-0AA0, molded case circuit breaker, 3-pole, 400 A continuous, line protection design, 110 x 138 x 248 mm.

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

3VA2340-4HM32-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA2340-4HM32-0AA0 — Ratings
ParameterValue
Number of poles3
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C400 A
Current at 45 °C400 A
Current at 50 °C400 A
Current at 55 °C385 A
Current at 60 °C370 A
Current at 65 °C355 A
Current at 70 °C340 A
Switching capacity classS
Breaking capacity at 240 V121 kA
Breaking capacity at 415 V75.6 kA
Breaking capacity at 440 V75.6 kA
Breaking capacity at 500 V52.5 kA
Breaking capacity at 690 V7.5 kA
Power loss, max.96 W
3VA2340-4HM32-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU330
Overcurrent protection functionLIG
Ground-fault monitoringSummation current formation L-conductor
Grounding protection functionYes
3VA2340-4HM32-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2340-4HM32-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA2340-4HM32-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2340-4HM32-0AA0 — 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

Its interrupting capacity scales from 121 kA at 240 V down to 7.5 kA at 690 V — the voltage-dependent SCCR curve is the real coordination spec for the fault-current study, not a single number.

Continuous current holds at 400 A from 40 °C through 50 °C, then derates linearly to 340 A at 70 °C. That flat thermal curve means no headroom loss in a warm panel until you cross 55 °C — common in enclosed switchgear near process heat. The 400 A full-scale value is the BOM line item; the 80 A initial setting (likely the adjustable thermal pickup floor) gives range for motor or feeder circuits that don't need the full frame. Interrupting capacity: 121 kA at 240 V, 75.6 kA at 415/440 V, 52.5 kA at 500 V, 7.5 kA at 690 V. The ground-fault monitoring uses summation current formation on the L-conductor, not a separate GFCI module; that's built into the trip unit for this variant.

Panel integration and physical fit

Dimensions: 110 mm deep, 138 mm wide, 248 mm tall. The 138 mm width on a 3-pole frame fits a typical DIN-rail enclosure section with room for side-mounted auxiliaries.

Frequently asked questions

Does this breaker include ground-fault protection?

Yes, the ground-fault monitoring uses summation current formation on the L-conductor, integrated into the trip unit. It is not a separate add-on module.

MPN
3VA2340-4HM32-0AA0