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Siemens 3VA1120-4EF36-0AE0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1120-4EF36-0AE0 SENTRON MCCB, 3-pole 20A, 121kA @

MPN3VA1120-4EF36-0AE0

Siemens SENTRON 3VA1120-4EF36-0AE0, 3-pole molded case circuit breaker, 20 A rated current, TM240 thermal-magnetic release, line protection design, 121 kA breaking capacity at 240 V.

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

3VA1120-4EF36-0AE0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA11204EF360AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AA12
3VA1120-4EF36-0AE0 — 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
3VA1120-4EF36-0AE0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1120-4EF36-0AE0 — Construction & Connection
ParameterValue
Main circuit connection typebox terminal on both sides
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1120-4EF36-0AE0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts4
3VA1120-4EF36-0AE0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1120-4EF36-0AE0 — 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

MCCB for line protection — 20 A continuous, 121 kA interrupting

Its TM240 thermal-magnetic release is fixed at 20 A and holds that rating from 40 °C through 55 °C; at 60 °C it derates to 19 A, and stays at 19 A up to 70 °C. Short-circuit breaking capacity reaches 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V.

The 3VA1120-4EF36-0AE0 occupies a 76.2 mm wide footprint on the DIN rail or mounting plate, with a depth of 70 mm and height of 130 mm. The 12 W power loss is conducted through the base and terminals — no fan required in a ventilated enclosure at 20 A continuous.

Frequently asked questions

What is the breaking capacity of 3VA1120-4EF36-0AE0 at 240 V?

121 kA at 240 V — the highest short-circuit rating in the 3VA1 line, suitable for high-fault-current installations.

Will 3VA1120-4EF36-0AE0 drop into a panel designed for 3VA1110-5ED36-0AC0?

Both are 3-pole SENTRON MCCBs in the same 3VA1 frame with identical 76.2 mm width, 70 mm depth, and 130 mm height, so the mechanical footprint and DIN-rail mounting are the same. The key difference is the release: 3VA1120-4EF36-0AE0 uses a TM240 thermal-magnetic release rated 20 A, while the 3VA1110-5ED36-0AC0 uses a different release curve and rating — verify the trip characteristics match your load before swapping.

Where can I buy 3VA1120-4EF36-0AE0?

Sourced and quoted to order against an RFQ through independent distribution channels — availability and current pricing confirmed at quote time.

What compliance documentation is available for 3VA1120-4EF36-0AE0?

As a current-production SENTRON MCCB, standard Siemens documentation includes RoHS and REACH declarations, plus IEC/UL certification data sheets. Specific document requests should be included with the RFQ.

MPN
3VA1120-4EF36-0AE0