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Siemens 3VA1120-4EF32-0HH0 — Molded Case Circuit Breakers (MCCB)

Siemens SENTRON 3VA1120-4EF32-0HH0 MCCB, 3-Pole, 20 A, 121 k

MPN3VA1120-4EF32-0HH0

Siemens SENTRON 3VA1120-4EF32-0HH0, 3-pole molded case circuit breaker, 20 A rated current, 121 kA breaking capacity at 240 VAC, line protection design.

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

3VA1120-4EF32-0HH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA11204EF320AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1120-4EF32-0HH0 — 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 classS
Breaking capacity at 240 V121 kA
Breaking capacity at 415 V75.6 kA
Breaking capacity at 440 V52.5 kA
Breaking capacity at 500 V11.9 kA
Breaking capacity at 690 V11.9 kA
Power loss, max.12 W
3VA1120-4EF32-0HH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1120-4EF32-0HH0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1120-4EF32-0HH0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerYes
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts3
3VA1120-4EF32-0HH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1120-4EF32-0HH0 — 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

The Siemens SENTRON 3VA1120-4EF32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 20 A continuously at 40 °C and holding that rating through 55 °C before a 1 A derate step at 60 °C. Breaking capacity is the headline: 121 kA at 240 VAC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V — meaning it handles high-fault utility feeds without cascading upstream.

Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard SENTRON 3VA1 footprint that drops into the existing DIN-rail or panel-mount cutout.

Frequently asked questions

Where can I buy 3VA1120-4EF32-0HH0 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote to confirm current availability and pricing.

What is 3VA1120-4EF32-0HH0's breaking capacity at different voltages?

Breaking capacity is 121 kA at 240 VAC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V.

What auxiliary switches and releases does this MCCB include?

It includes 2 auxiliary switches plus 1 trip alarm switch (HQ design) and a shunt trip (STL) release. No undervoltage release is fitted.

MPN
3VA1120-4EF32-0HH0