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Siemens 3VA1020-4ED32-0CH0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1020-4ED32-0CH0 SENTRON MCCB, 20 A, 3-Pole, 121 k

MPN3VA1020-4ED32-0CH0

Siemens SENTRON 3VA1020-4ED32-0CH0, molded case circuit breaker, 3-pole, 20 A rated current, interrupting capacity 121 kA at 240 V AC, 75.6 kA at 415 V AC.

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

3VA1020-4ED32-0CH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA10204ED320AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1020-4ED32-0CH0 — 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
3VA1020-4ED32-0CH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM210
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1020-4ED32-0CH0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1020-4ED32-0CH0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionNo
Auxiliary CO contacts3
3VA1020-4ED32-0CH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1020-4ED32-0CH0 — 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 3VA1020-4ED32-0CH0 — 20 A MCCB, line protection, 3-pole

The Siemens SENTRON 3VA1020-4ED32-0CH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 20 A at 40 °C through 55 °C, derating to 19 A at 60–70 °C. Interrupting capacity is the headline here: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V — giving you serious fault-clearing headroom even on high-capacity transformers.

Auxiliary complement and undervoltage release

The UVR drops the breaker on loss of control voltage, which is standard for emergency-stop or undervoltage-protection schemes in machine-tool and conveyor panels.

Footprint is 76.2 mm wide (3 in), 130 mm tall (5.12 in), 70 mm deep (2.76 in) — standard 3-pole MCCB envelope for DIN-rail or screw-mount panel assembly.

Frequently asked questions

What auxiliary switches and releases come fitted on 3VA1020-4ED32-0CH0?

Factory-fitted with two auxiliary switches, one trip-alarm switch (HQ), and an undervoltage release (UVR). No field-install kit needed for those functions.

MPN
3VA1020-4ED32-0CH0