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Siemens 3VA2340-5HN42-0HC0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2340-5HN42-0HC0 SENTRON MCCB, 400A, 187kA at 240V

MPN3VA2340-5HN42-0HC0

Siemens SENTRON 3VA2340-5HN42-0HC0, molded case circuit breaker, 4-pole, 400 A continuous, 187 kA breaking capacity at 240 VAC, line protection design with shunt trip release.

Siemens 3VA2340-5HN42-0HC0 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

3VA2340-5HN42-0HC0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA2340-5HN42-0AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AA12
3VA2340-5HN42-0HC0 — 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 °C385 A
Current at 60 °C370 A
Current at 65 °C355 A
Current at 70 °C340 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.96 W
3VA2340-5HN42-0HC0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU350
Overcurrent protection functionLSI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA2340-5HN42-0HC0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2340-5HN42-0HC0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerYes
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts2
3VA2340-5HN42-0HC0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2340-5HN42-0HC0 — 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

The Siemens SENTRON 3VA2340-5HN42-0HC0 is a 4-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C ambient, with a maximum breaking capacity of 187 kA at 240 VAC. The 400 A rating holds steady through 50 °C; above that it derates in 5 °C steps down to 340 A at 70 °C, which matters if you're stuffing this into a hot enclosure with other gear.

Breaking capacity across voltages

Breaking capacity drops as voltage rises: 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. That 7.5 kA at 690 V is the number to check if you're on a 690 V industrial system — it's much lower than the 240 V headline, so coordination studies need to use the right voltage column.

Integrated shunt trip and auxiliary switches

The two auxiliary switches provide status feedback (open/closed) to a PLC or indicator panel.

Frequently asked questions

What is the breaking capacity of this MCCB at different voltages?

At 240 V it is 187 kA, at 415 V and 440 V it is 121 kA, at 500 V it is 75.6 kA, and at 690 V it is 7.5 kA. Use the voltage that matches your system for coordination studies.

What is the continuous current rating and how does it derate with temperature?

The continuous current rating is 400 A at 40 °C, 45 °C, and 50 °C. It derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C.

What auxiliary releases and switches come with this breaker?

It includes a shunt trip (STL) release for remote tripping and two HQ auxiliary switches for status feedback. No undervoltage release or ground-fault monitoring is fitted on this variant.

Where can I buy 3VA2340-5HN42-0HC0?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3VA2340-5HN42-0HC0