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Siemens 3VA1120-6EF32-0AH0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1120-6EF32-0AH0 SENTRON MCCB, 20 A, 220 kA at 240

MPN3VA1120-6EF32-0AH0

Siemens SENTRON 3VA1120-6EF32-0AH0, molded case circuit breaker, 3-pole, 20 A rated continuous current, 220 kA interrupting capacity at 240 V, TM240 thermal-magnetic release, 2 aux + 1 alarm switch.

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

3VA1120-6EF32-0AH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Product versionLine protection
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1120-6EF32-0AH0 — Ratings
ParameterValue
Number of poles3
Current at 40 °C20 A
Current at 45 °C20 A
Current at 50 °C20 A
Current at 55 °C19.2 A
Current at 60 °C18.8 A
Current at 65 °C18.4 A
Current at 70 °C18 A
Switching capacity classH
Breaking capacity at 240 V220 kA
Breaking capacity at 415 V154 kA
Breaking capacity at 440 V121 kA
Breaking capacity at 690 V17 kA
3VA1120-6EF32-0AH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
3VA1120-6EF32-0AH0 — Construction & Connection
ParameterValue
Main circuit connection typelug terminal
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1120-6EF32-0AH0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts3
3VA1120-6EF32-0AH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1120-6EF32-0AH0 — Mechanical
ParameterValue
Height130 mm
Width76.2 mm
Depth70 mm

Product details

SENTRON 3VA1120-6EF32-0AH0 — 20 A MCCB for Line Protection

The Siemens 3VA1120-6EF32-0AH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection duty, carrying a continuous current Iu of 20 A that holds flat from 40 °C up to 50 °C before a gradual derating curve begins — at 55 °C it's still 19.2 A, and at the 70 °C operating maximum it delivers 18 A. That thermal stability means you can size this breaker for a 20 A feeder in a warm panel without oversizing the frame. The interrupting ratings are the headline here: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V.

Panel Fit — Dimensions and Mounting

The 3VA1120-6EF32-0AH0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that fits SENTRON distribution blocks and most DIN-rail or screw-mount panel layouts.

Frequently asked questions

How do I get pricing and availability for 3VA1120-6EF32-0AH0?

Pricing and stock are confirmed at quote time against an RFQ. Submit a request through the storefront and we'll return current availability and a firm price for your quantity.

What is the interrupting capacity of this MCCB at 240 V?

At 240 V the interrupting rating is 220 kA. At 415 V it's 154 kA, at 440 V it's 121 kA, and at 690 V it's 17 kA.

What does the TM240 release designation mean?

TM240 indicates a thermal-magnetic overcurrent release with fixed settings — the thermal element provides overload protection, the magnetic element provides short-circuit protection, and the '240' refers to the release family within the 3VA platform. No field adjustment of trip curves is available on this variant.

What auxiliary contacts come with this breaker?

It ships with 2 auxiliary switches plus 1 trip alarm switch (HQ type), giving you remote position indication and a dedicated alarm contact for trip events.

MPN
3VA1120-6EF32-0AH0