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Siemens 3RV2021-0HA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-0HA10 SIRIUS Motor Protection Circuit Breake

MPN3RV2021-0HA10
Active

Siemens SIRIUS, motor-protection circuit breaker, 3RV2021-0HA10, S0 frame, Trip Class 10, 100 kA interrupting capacity at 400 V AC, screw and snap-on DIN rail mount.

$31.75 – $75.00Ref. price · indicative, final on quote
Siemens 3RV2021-0HA10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2021-0HA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-0HA10 — Electrical
ParameterValue
Rated operational current (Ie)0.8 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
3RV2021-0HA10 — Protection & Tripping
ParameterValue
Overload release setting range0.55 ... 0.8 A
Instantaneous short-circuit trip current10 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)100 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V100 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2021-0HA10 — 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
3RV2021-0HA10 — 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
Conductor range, AWG (main contacts)2x (16 ... 12), 2x (14 ... 8)
3RV2021-0HA10 — 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
3RV2021-0HA10 — 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
3RV2021-0HA10 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

SIRIUS 3RV2021-0HA10 — motor-protection circuit breaker, S0 frame

The Siemens 3RV2021-0HA10 is a SIRIUS-brand motor-protection circuit breaker in the S0 frame size, designed for protecting motor branches against overload and short-circuit.

The 45 mm width (3TE) fits standard distribution board pitch. Clearance: 50 mm above and below, 30 mm to the side, zero forward or backward — so it packs tight in a shallow enclosure. Any mounting position is permitted. Main-circuit screw terminals accept 2×(1–2.5 mm²) or 2×(2.5–10 mm²) solid/stranded; M4 main contact screws. Screwdriver: Pozidriv size 2, shaft diameter 5–6 mm.

Frequently asked questions

What is the closest functional second-source for 3RV2021-0HA10?

The 3RV1011-1HA10 is a closely related SIRIUS motor-protection circuit breaker in the same S0 frame. Both share Trip Class 10 and 100 kA SCCR at 400 V AC. The 3RV2021-0HA10 includes phase failure detection; verify whether the 3RV1011-1HA10 on your BOM also specifies that feature. Panel cutout and DIN-rail footprint are identical — no rewiring needed for a swap.

Where can I buy 3RV2021-0HA10 and get current pricing?

Sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing, availability, and lead time — confirmed at quote time.

MPN
3RV2021-0HA10