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Siemens 3RV6021-4FA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV6021-4FA10 SIRIUS Motor Protection Circuit Breake

MPN3RV6021-4FA10

Siemens SIRIUS, motor protection circuit breaker, 3RV6021-4FA10, 40 A rated, Class 10, 690 V, screw-type terminals, size S0.

Siemens 3RV6021-4FA10 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

3RV6021-4FA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV6021-4FA10 — Electrical
ParameterValue
Rated operational current (Ie)40 A
Rated voltage690 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
3RV6021-4FA10 — Protection & Tripping
ParameterValue
Overload release setting range34 ... 40 A
Instantaneous short-circuit trip current480 A
Trip classCLASS 10
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
3RV6021-4FA10 — 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
3RV6021-4FA10 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV6021-4FA10 — Environmental
ParameterValue
Operating temperature-20 ... +40 °C
Transport temperature-50 ... +80 °C
Relative humidity (operation)10 ... 95 %
Max. installation altitude2 000 m
3RV6021-4FA10 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

It combines a thermal overload relay (Class 10 trip) with a magnetic short-circuit trip, rated at 40 A operational current and 690 V maximum.

Any mounting position is allowed. That 96 mm depth matters when sizing a shallow enclosure — it's the full projection from the DIN rail face.

Screw-type terminals on top and bottom. Accepts solid or stranded: 2×(1–2.5 mm²) or 2×(2.5–10 mm²). AWG equivalents: 2×(16–12) or 2×(14–8). Finely stranded with ferrule: 2×(1–2.5 mm²), 2×(2.5–6 mm²), or 1×10 mm². Torque range for main contacts: 2–2.5 N·m. That 10 mm² single conductor is the largest practical termination for a motor feed.

Environmental and operating limits

Rated for ambient operation -20 to +40 °C; transport/storage range -50 to +80 °C. Relative humidity 10–95% during operation. Installation altitude up to 2,000 m. Shock resistance 25 g / 11 ms per IEC 60068-2-27. Surge voltage withstand 6 kV. Power dissipation 14 W typical at rated load — account for that in enclosure thermal calculations.

Frequently asked questions

What is the closest functional alternative to 3RV6021-4FA10?

The 3RV6021-4DA10 is the nearest functional peer in the same SIRIUS S0 family. Both are 40 A, Class 10 motor protection breakers with screw terminals. The -4FA10 variant carries a different adjustment range or internal trip characteristic — verify the specific overload setting range on your nameplate before substituting.

Will 3RV6021-4FA10 drop into a panel built for 3RV6021-4DA10?

Yes, the physical footprint is identical: same S0 frame, same 45 mm width, same 96 mm depth, same DIN rail mounting and clearance requirements. No rewiring needed for the mounting — but confirm the trip setting range matches your motor FLA before swapping.

MPN
3RV6021-4FA10