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Siemens 3RV1021-1BA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1BA10 SIRIUS Motor Protection Circuit Breake

MPN3RV1021-1BA10

Siemens SIRIUS motor protection circuit breaker, 3RV1021-1BA10, 2 A continuous, Class 10, 100 kA breaking capacity at 400 V AC, screw terminals, snap-on DIN rail mount.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RV1021-1BA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1BA10 — Electrical
ParameterValue
Rated voltage690 V
Rated voltage, AC-3 (max.)690 V
Rated impulse withstand voltage (Uimp)6 000 V
Number of poles3
Power loss (AC, hot)7.25 W
Power loss, per pole (AC, hot)2.4 W
3RV1021-1BA10 — Protection & Tripping
ParameterValue
Overload release setting range1.4 ... 2 A
Trip classCLASS 10
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)100 kA
Breaking capacity at 500 V (AC)100 kA
Breaking capacity at 690 V (AC)8 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1021-1BA10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-1BA10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)
Conductor range, AWG (main contacts)2x (14 ... 10)
3RV1021-1BA10 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Mounting positionany
3RV1021-1BA10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-1BA10 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The Siemens 3RV1021-1BA10 is a SIRIUS motor protection circuit breaker rated for 2 A continuous current with a Class 10 trip characteristic, sized for a 0.75 kW motor at 400 V.

Any mounting position is allowed.

The 2 A continuous rating sets the motor full-load current it protects; the Class 10 trip curve means it will disconnect within 10 seconds at 7.2× rated current, matching standard induction motor starting profiles. At 690 V the breaking capacity drops to 8 kA, so verify the line voltage if used on 690 V systems. Power dissipation is 7.25 W hot (2.4 W per pole), which matters for thermal management in a dense panel. Shock resistance of 25g / 11 ms covers most industrial vibration environments.

Terminal and Wiring

Screw-type terminals for main and auxiliary circuits accept solid or stranded conductors: 2x (1 … 2.5 mm²) and 2x (2.5 … 6 mm²). For AWG, 2x (14 … 10). Finely stranded wire with core end processing is also supported. The auxiliary switch extension is available as an add-on, so the breaker can signal its state to a PLC or status light.

Frequently asked questions

Where can I buy 3RV1021-1BA10?

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 the closest functional second-source to 3RV1021-1BA10?

The 3RV1011-0HA10 is a smaller-frame SIRIUS breaker with a lower breaking capacity — it does not drop into the same panel without checking the mounting footprint and the available fault current. The 3RV2021-1FA15 is a higher-current sibling in the same frame size but with a different trip range. Neither is a direct drop-in without verifying the specific ratings.

What compliance documentation does Siemens provide for 3RV1021-1BA10?

The breaker carries a substance prohibition date of 01.05.2012, indicating RoHS compliance for that substance class. Standard Siemens documentation includes a CE declaration and the product is designed to meet IEC/EN 60947-2 and 60947-4-1. Specific UL/CSA listings are not confirmed in this record.

MPN
3RV1021-1BA10