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Siemens 3RV1021-0HA15 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-0HA15 SIRIUS Motor Protection Circuit Breake

MPN3RV1021-0HA15

Siemens SIRIUS 3RV1021-0HA15 motor protection circuit breaker, 0.8 A rated continuous current, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw-type terminals, DIN rail mount.

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

3RV1021-0HA15 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-0HA15 — 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
3RV1021-0HA15 — Protection & Tripping
ParameterValue
Overload release setting range0.55 ... 0.8 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
Phase-failure detectionYes
Ground-fault detectionNo
3RV1021-0HA15 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
3RV1021-0HA15 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor range, AWG (main contacts)2x (14 ... 10)
3RV1021-0HA15 — 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
3RV1021-0HA15 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-0HA15 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

Main circuit connections use screw-type terminals accepting solid conductors 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²), or stranded 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²).

The 0.8 A continuous current rating sets the thermal pickup for motor overload protection — this breaker is sized for small motors drawing under an amp at full load. Breaking capacity of 100 kA at 400 V AC (also 100 kA at 240 V, 500 V, and 690 V AC) covers virtually any installation fault level without needing upstream fuses. The auxiliary switch (transverse design) provides a signal contact rated 1 A at 24 V, 0.5 A at 230 V, and 0.15 A at 60 V — enough for PLC or relay feedback. Power dissipation at AC in hot operating state is 7.25 W — factor this into enclosure thermal calculations when grouping multiple breakers.

Width 45 mm, height 97 mm, depth 96 mm — fits a standard 45 mm-wide DIN-rail slot with zero clearance needed at the sides or back. Shock resistance rated at 25 g for 11 ms — suitable for mounting on machinery subject to vibration.

Frequently asked questions

Will 3RV1021-0HA15 drop into a panel specified for 3RV1011-0HA10?

Both share the same SIRIUS family footprint — 45 mm width, DIN rail mount, screw terminals — so it fits the same panel slot and rail without rewiring, but verify the current rating matches your motor load.

MPN
3RV1021-0HA15