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Siemens 3VA1120-5EF32-0DH0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1120-5EF32-0DH0 SENTRON MCCB, 20A 3-Pole, 187kA

MPN3VA1120-5EF32-0DH0

Siemens SENTRON 3VA1120-5EF32-0DH0, molded case circuit breaker, 3-pole, 20 A rated at 40 °C, 187 kA breaking capacity at 240 V AC, line protection design, undervoltage release, 2 auxiliary switches + 1 trip alarm switch HQ.

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

3VA1120-5EF32-0DH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA11205EF320AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1120-5EF32-0DH0 — Ratings
ParameterValue
Number of poles3
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C20 A
Current at 45 °C20 A
Current at 50 °C20 A
Current at 55 °C20 A
Current at 60 °C19 A
Current at 65 °C19 A
Current at 70 °C19 A
Switching capacity classM
Breaking capacity at 240 V187 kA
Breaking capacity at 415 V121 kA
Breaking capacity at 440 V75.6 kA
Breaking capacity at 500 V17 kA
Breaking capacity at 690 V17 kA
Power loss, max.14.5 W
3VA1120-5EF32-0DH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1120-5EF32-0DH0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1120-5EF32-0DH0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts3
3VA1120-5EF32-0DH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1120-5EF32-0DH0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height130 mm
Width76.2 mm
Depth70 mm
Height (in)5.12 in
Width (in)3 in
Depth (in)2.76 in

Product details

For a 20 A MCCB these figures are well above typical panel SCCR requirements, giving headroom for selectivity coordination with downstream branch breakers.

The breaker holds full 20 A rating up to 55 °C ambient; at 60 °C it derates to 19 A, and at 70 °C to 19 A. Maximum power loss is 14.5 W. The 130 mm height fits standard 3-pole MCCB mounting patterns.

The auxiliary switch block provides 2 form-C auxiliary switches plus a separate trip alarm switch (HQ), giving status feedback for remote monitoring or PLC inputs.

Frequently asked questions

What is the breaking capacity of 3VA1120-5EF32-0DH0 at 240 V?

187 kA at 240 V AC. At 415 V it is 121 kA, at 440 V it is 75.6 kA, and at 500 V / 690 V it is 17 kA.

What auxiliary switches come with 3VA1120-5EF32-0DH0?

It includes 2 auxiliary switches plus 1 trip alarm switch HQ, factory-fitted.

Where can I buy 3VA1120-5EF32-0DH0?

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

MPN
3VA1120-5EF32-0DH0