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Siemens 3VA1120-5EF32-0AH0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1120-5EF32-0AH0 SENTRON MCCB, 20A 3-Pole, 187kA a

MPN3VA1120-5EF32-0AH0

Siemens SENTRON 3VA1120-5EF32-0AH0, molded case circuit breaker, 3-pole, 20 A rated, TM240 release, line protection, 187 kA interrupting 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

3VA1120-5EF32-0AH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA11205EF320AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1120-5EF32-0AH0 — 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.12 W
3VA1120-5EF32-0AH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1120-5EF32-0AH0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1120-5EF32-0AH0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts3
3VA1120-5EF32-0AH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1120-5EF32-0AH0 — 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

SENTRON 3VA1120-5EF32-0AH0 — 20 A MCCB with TM240 release

Three-pole construction with a TM240 thermal-magnetic release. The interrupting ratings drop as system voltage rises: 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V — the 17 kA floor at 690 V still covers most industrial motor-control center fault levels.

Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or direct-mount panel layouts. The auxiliary contacts share the same mounting space — no extra DIN rail needed. Maximum power loss is 12 W at rated current. That is low enough to avoid forced ventilation in a standard IP54 enclosure, but check the cumulative heat if you pack multiple breakers in a small cabinet.

Frequently asked questions

What is the interrupting rating of 3VA1120-5EF32-0AH0 at 240 V?

It interrupts 187 kA at 240 V, which is the highest interrupting capacity in the 3VA1 frame at that voltage level.

What does the TM240 release mean on this MCCB?

TM240 means a thermal-magnetic release with a 20 A fixed thermal element and adjustable magnetic pickup — suited for feeder protection where coordination with downstream breakers is needed.

Where can I buy 3VA1120-5EF32-0AH0 and how is it quoted?

This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.

Will 3VA1120-5EF32-0AH0 fit in a panel designed for 3VA1110-5EF32-0AM0?

The 3VA1120 and 3VA1110 share the same 3-pole frame dimensions (130 mm height, 76.2 mm width, 70 mm depth) and mounting pattern, so it drops into the same panel cutout without rewiring.

MPN
3VA1120-5EF32-0AH0