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Siemens 3VA2340-5JQ42-0BC0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2340-5JQ42-0BC0 SENTRON MCCB, 400 A, 4-Pole, 187

MPN3VA2340-5JQ42-0BC0

Siemens SENTRON 3VA2340-5JQ42-0BC0, molded case circuit breaker, 4-pole, line protection, 400 A rated, 187 kA breaking capacity at 240 V, with undervoltage release and communication function.

Siemens 3VA2340-5JQ42-0BC0 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

3VA2340-5JQ42-0BC0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA2340-5JQ42-0AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AA12
3VA2340-5JQ42-0BC0 — Ratings
ParameterValue
Number of poles4
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 °C375 A
Current at 60 °C350 A
Current at 65 °C325 A
Current at 70 °C300 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 V7.5 kA
Power loss, max.98.5 W
3VA2340-5JQ42-0BC0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU560
Overcurrent protection functionLSIG
Ground-fault monitoringSummation current formation L + N conductor
Grounding protection functionYes
3VA2340-5JQ42-0BC0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2340-5JQ42-0BC0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Communication functionYes
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts2
3VA2340-5JQ42-0BC0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2340-5JQ42-0BC0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height248 mm
Width184 mm
Depth110 mm
Height (in)9.76 in
Width (in)7.24 in
Depth (in)4.33 in

Product details

A communication function is also built in, so it can report status or accept remote trip commands over a bus, though the protocol is not specified in this listing.

Above that, it derates linearly: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C.

Breaking capacity across voltage bands

The 3VA2340-5JQ42-0BC0 delivers 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V.

Dimensions are 248 mm high, 184 mm wide, and 110 mm deep. The 184 mm width is the 4-pole frame — a 3-pole version of the same frame would be narrower, so a panel cutout or mounting plate designed for a 3-pole 3VA2 will not accept this unit without modification.

Frequently asked questions

Where can I buy 3VA2340-5JQ42-0BC0 and get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quotation; availability and current pricing are confirmed at quote time.

What is the breaking capacity of 3VA2340-5JQ42-0BC0 at 415 V?

The interrupting rating is 121 kA at 415 V, which covers most industrial secondary-side fault levels without requiring a current-limiting upstream device.

Does 3VA2340-5JQ42-0BC0 include an undervoltage release?

Yes, it is equipped with an undervoltage release (UVR) as standard, which opens the breaker when control voltage drops below the dropout threshold — a typical safety requirement for motor circuits and emergency-stop chains.

MPN
3VA2340-5JQ42-0BC0