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Siemens 3RV2021-4EA10-0BA0 — Motor Protection Circuit Breakers (MPCB)

3RV2021-4EA10-0BA0 SIRIUS Motor Protection Circuit Breaker,

MPN3RV2021-4EA10-0BA0
Active

Siemens SIRIUS, motor protection circuit breaker, 3RV2021-4EA10-0BA0, CLASS 10, S0 frame, 45 mm width, screw and snap-on DIN rail mounting.

$74.93Ref. price · indicative, final on quote
Siemens 3RV2021-4EA10-0BA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2021-4EA10-0BA0 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-4EA10-0BA0 — Electrical
ParameterValue
Rated operational current (Ie)32 A
Rated voltage20 ... 690 V
Rated voltage, AC-3 (max.)690 V
Rated frequency50 ... 60 Hz
Rated insulation voltage (Ui), pollution degree 3690 V
Rated impulse withstand voltage (Uimp)6 kV
Number of poles3
Power loss (AC, hot)13.25 W
Power loss, per pole (AC, hot)4.4 W
3RV2021-4EA10-0BA0 — Protection & Tripping
ParameterValue
Overload release setting range27 ... 32 A
Instantaneous short-circuit trip current400 A
Trip classCLASS 10
Breaking capacity at 240 V (AC)25 kA
Breaking capacity at 400 V (AC)25 kA
Breaking capacity at 500 V (AC)10 kA
Breaking capacity at 690 V (AC)4 kA
Breaking capacity at 240 V10 kA
Breaking capacity at 690 V2 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2021-4EA10-0BA0 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)500
Endurance, auxiliary contacts (typ.)500
Switching frequency, AC-3 (max.)15 1/h
Auxiliary CO (changeover) contacts0
3RV2021-4EA10-0BA0 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)
Conductor cross-section, finely stranded with ferrule2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²
3RV2021-4EA10-0BA0 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth97 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2021-4EA10-0BA0 — Environmental
ParameterValue
Operating temperature-50 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Relative humidity (operation)10 ... 95 %
Max. installation altitude2 000 m
3RV2021-4EA10-0BA0 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

S0 frame and panel fit

This breaker uses the S0 frame size, which is 45 mm wide and 97 mm deep.

Rated breaking capacity at 400 V AC is 25 kA, dropping to 10 kA at 500 V AC and 4 kA at 690 V AC. The ultimate short-circuit breaking capacity (Icu) at 400 V is 10 kA. These figures govern selectivity with upstream fuses or breakers — at 400 V the 25 kA rating gives headroom for most industrial distribution panels without requiring a current-limiting upstream device.

The breaker includes phase failure detection but no ground fault detection. Screw-type terminals accept 2x 1–2.5 mm² or 2x 2.5–10 mm² solid or stranded conductors, with a Pozidriv size 2 screwdriver tip.

Frequently asked questions

Where can I buy 3RV2021-4EA10-0BA0 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is 3RV2021-4EA10-0BA0's listed depth and width?

Depth is 97 mm, width is 45 mm, and height is 97 mm.

What trip class does this motor protection breaker use?

It uses CLASS 10 trip characteristic, meaning it disconnects within 10 seconds at 7.2× the thermal setting.

MPN
3RV2021-4EA10-0BA0