Skip to main content
Log in
Siemens 3RV2021-1BA15 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-1BA15 SIRIUS Motor Protection Circuit Breake

MPN3RV2021-1BA15
Active

Siemens SIRIUS motor protection circuit breaker, 3RV2021-1BA15, Class 10 trip, 100 kA SCCR at 400 V, screw and snap-on mounting on 35 mm DIN rail.

$41.91Ref. price · indicative, final on quote
Siemens 3RV2021-1BA15 datasheet (PDF)
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

3RV2021-1BA15 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-1BA15 — Electrical
ParameterValue
Rated operational current (Ie)2 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)7.25 W
Power loss, per pole (AC, hot)2.4 W
3RV2021-1BA15 — Protection & Tripping
ParameterValue
Overload release setting range1.4 ... 2 A
Instantaneous short-circuit trip current26 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)10 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V10 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2021-1BA15 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Endurance, auxiliary contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
Auxiliary CO (changeover) contacts0
3RV2021-1BA15 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded with ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor range, AWG (main contacts)2x (16 ... 12), 2x (14 ... 8)
3RV2021-1BA15 — 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
3RV2021-1BA15 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Relative humidity (operation)10 ... 95 %
Max. installation altitude2 000 m
3RV2021-1BA15 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

Motor protection circuit breaker, SIRIUS series, Class 10

It provides phase failure detection and is rated for a voltage range of 20 to 690 V. The interrupting capacity reaches 100 kA at 240 V, 400 V, and 500 V, stepping down to 10 kA at 690 V. This SCCR headroom allows the breaker to clear high-fault currents without cascading upstream, a critical factor for panel selectivity studies.

Integration notes

Screw-type terminals on the main current circuit accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded conductors. Main contact terminals are M4. The breaker includes phase failure detection but no ground fault detection. The auxiliary contact ratings include 1 A at 24 V, 0.5 A at 120/125/230 V, and 0.15 A at 60 V.

Frequently asked questions

How do I get current pricing and availability for 3RV2021-1BA15?

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

What are the key ratings of 3RV2021-1BA15?

The breaker is rated for motor protection with Trip Class 10, a voltage range of 20 to 690 V, and interrupting capacities of 100 kA at 400 V and 10 kA at 690 V. It includes phase failure detection.

What is the difference between 3RV2021-1BA15 and 3RV2021-1FA15?

Both are SIRIUS motor protection circuit breakers with the same Class 10 trip and 100 kA SCCR at 400 V. The 3RV2021-1FA15 is a functional second-source with identical mounting and terminal specs, making it a direct drop-in for panels specified around the -1BA15 without rewiring.

MPN
3RV2021-1BA15