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Siemens 3VA2040-8HM42-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2040-8HM42-0AA0 SENTRON MCCB, 4P, 40 A, 440 kA at

MPN3VA2040-8HM42-0AA0
Active

Siemens SENTRON 3VA2040-8HM42-0AA0, 4-pole molded case circuit breaker, 40 A rated continuous current, ETU330 electronic trip unit, 440 kA breaking capacity at 240 V.

Siemens 3VA2040-8HM42-0AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3VA2040-8HM42-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Product versionLine protection
3VA2040-8HM42-0AA0 — Ratings
ParameterValue
Number of poles4
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 V53 kA
Power loss, max.1.2 W
3VA2040-8HM42-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU330
3VA2040-8HM42-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeLug terminal
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2040-8HM42-0AA0 — Accessories & Functions
ParameterValue
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA2040-8HM42-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-40 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2040-8HM42-0AA0 — Mechanical
ParameterValue
Height181 mm
Width140 mm
Depth86 mm
Height (in)7.1 in
Width (in)5.5 in
Depth (in)3.4 in

Product details

SENTRON 3VA2040-8HM42-0AA0 — 4-pole MCCB with ETU330 trip unit

The Siemens SENTRON 3VA2040-8HM42-0AA0 is a 4-pole molded case circuit breaker rated for 40 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed in typical enclosed panel conditions. Breaking capacity reaches 440 kA at 240 V, 330 kA at 415/440 V, 220 kA at 500 V, and 53 kA at 690 V, covering high-fault installations. The ETU330 electronic trip unit provides adjustable long-time delay (tr) from 0.5 s to 17 s and N-conductor protection configurable to OFF or 100%. Ground fault monitoring uses summation current formation on L+N.

Frequently asked questions

What is the breaking capacity of 3VA2040-8HM42-0AA0 at different voltages?

440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 53 kA at 690 V.

Will 3VA2040-8HM42-0AA0 drop into a panel specified for 3VA2040-8HN42-0AA0 without rewiring?

Both are 4-pole 40 A SENTRON 3VA breakers with the same physical footprint (86 mm deep × 140 mm wide × 181 mm high) and 40 A rating. The key difference is the trip unit: 3VA2040-8HM42-0AA0 uses an ETU330 electronic trip, while the -8HN42 variant uses a different trip design. Mechanical fit is identical, but verify the trip curve and protection settings match your application before swapping.

How do I get current pricing and availability for 3VA2040-8HM42-0AA0?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quote (RFQ) and we will confirm current pricing and availability at quote time.

MPN
3VA2040-8HM42-0AA0