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Siemens 3VA1120-4EF36-0CA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1120-4EF36-0CA0 SENTRON MCCB, 20 A, 3-Pole, 121 k

MPN3VA1120-4EF36-0CA0

Siemens SENTRON 3VA1120-4EF36-0CA0, molded case circuit breaker, 3-pole, 20 A rated, 121 kA at 240 V, undervoltage release, 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

3VA1120-4EF36-0CA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA11204EF360AA0
3VA1120-4EF36-0CA0 — 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.14.5 W
3VA1120-4EF36-0CA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1120-4EF36-0CA0 — Construction & Connection
ParameterValue
Main circuit connection typebox terminal on both sides
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1120-4EF36-0CA0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA1120-4EF36-0CA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1120-4EF36-0CA0 — 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

Its interrupting capacity hits 121 kA at 240 V AC, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V — still strong enough for high-fault industrial feeds. Power dissipation at full load is 14.5 W — panel cooling and adjacent device spacing should account for that. The TM240 overcurrent release (thermal-magnetic, fixed) provides the 20 A trip curve.

Breaking capacity by voltage — selectivity planning

At 240 V the breaker clears 121 kA; at 415 V it's 75.6 kA; at 440 V it's 52.5 kA; at 500 V and 690 V it's 11.9 kA.

The 3VA1120-4EF36-0CA0 measures 70 mm deep, 76.2 mm wide, and 130 mm high. The 76.2 mm width (3 in) is the standard 3-pole MCCB footprint for this SENTRON frame — it fits existing 3VA panel cutouts and busbar arrangements without modification.

Frequently asked questions

Where can I buy 3VA1120-4EF36-0CA0 and how do I get a price?

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

What is the breaking capacity of 3VA1120-4EF36-0CA0 at different voltages?

At 240 V it is 121 kA; at 415 V it is 75.6 kA; at 440 V it is 52.5 kA; at 500 V and 690 V it is 11.9 kA.

MPN
3VA1120-4EF36-0CA0