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Siemens 3VA2040-8HM32-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2040-8HM32-0AA0 SENTRON MCCB, 40 A, 3-Pole, 330 k

MPN3VA2040-8HM32-0AA0
Active

Siemens SENTRON 3VA2040-8HM32-0AA0, molded case circuit breaker, 3-pole, 40 A rated, 330 kA breaking capacity at 415 V, line protection design, adjustable thermal-magnetic trip.

Siemens 3VA2040-8HM32-0AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3VA2040-8HM32-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA2040-8HM32-0AA0 — 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 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 V52.5 kA
Power loss, max.1.2 W
3VA2040-8HM32-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU330
Overcurrent protection functionLIG
Ground-fault monitoringSummation current formation L-conductor
Grounding protection functionYes
3VA2040-8HM32-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2040-8HM32-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA2040-8HM32-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2040-8HM32-0AA0 — 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

Siemens SENTRON 3VA2040-8HM32-0AA0 — 40 A MCCB, Line Protection, 3-Pole

At 415 V it interrupts 330 kA, which covers high-fault-current scenarios common in industrial switchgear close to the transformer secondary.

Breaking capacity and fault clearance

The 330 kA at 415 V and 440 kA at 240 V place this in the highest interrupting class for a 40 A frame — it clears faults without cascading to upstream breakers.

Ground-fault monitoring and trip configuration

This variant includes summation-current ground-fault monitoring, meaning it sums the L-conductor currents internally to detect residual imbalance — no external CT or relay module needed. The trip indicator is absent, so fault cause is not stored on the breaker face; pair it with a remote indication contact if post-trip diagnostics matter.

The 105 mm width and 181 mm height fit standard Siemens 3VA modular spacing — drops into the same cutout as other 3VA20-frame breakers.

Frequently asked questions

What is the breaking capacity of 3VA2040-8HM32-0AA0 at 415 V?

330 kA at 415 V. At 240 V it interrupts 440 kA, and at 690 V it still clears 52.5 kA.

Will 3VA2040-8HM32-0AA0 drop into a panel specified for 3VA2040-8HN42-0AA0?

Both are 3VA20-frame 3-pole breakers with the same 105 mm width and 181 mm height, so the mechanical fit and busbar positions are identical. The difference is in the internal trip unit and accessories — the -8HM32 variant includes summation-current ground-fault monitoring, while the -8HN42 may have a different accessory configuration. Rewiring is not needed for the line and load connections, but verify the ground-fault wiring and any auxiliary contact wiring match the panel schematic.

Where can I buy 3VA2040-8HM32-0AA0 and how is it quoted?

Sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a binding commercial offer.

What is the adjustable trip range on this MCCB?

The thermal-magnetic trip is adjustable from 16 A to 40 A full-scale. The continuous current rating is 40 A, and it holds that rating across the entire 40 °C to 70 °C ambient range without derating (–).

MPN
3VA2040-8HM32-0AA0