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Siemens 3RV1021-1HA15 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1HA15 SIRIUS Motor Protective Circuit Breake

MPN3RV1021-1HA15

Siemens SIRIUS 3RV1021-1HA15 motor-protective circuit breaker, 8 A rated continuous current, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw-type terminals, IP20 front.

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

3RV1021-1HA15 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1HA15 — 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)9.25 W
Power loss, per pole (AC, hot)3.1 W
3RV1021-1HA15 — Protection & Tripping
ParameterValue
Overload release setting range5.5 ... 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)42 kA
Breaking capacity at 690 V (AC)6 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1021-1HA15 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-1HA15 — 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)
3RV1021-1HA15 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
Mounting positionany
3RV1021-1HA15 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-1HA15 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

SIRIUS 3RV1021-1HA15 — motor-protective circuit breaker, 8 A, Class 10

The Siemens 3RV1021-1HA15 is a SIRIUS motor-protective circuit breaker rated for 8 A continuous current with Trip Class 10, designed to protect 3 kW motors at 400 V AC. It snaps onto a 35 mm DIN rail per DIN EN 50022 and accepts screw-type terminals for both main and auxiliary circuits — solid conductors up to 2.5 mm² and stranded up to 6 mm². The IP20 front protection keeps live parts behind the panel door, standard for motor control centers.

This breaker delivers 100 kA breaking capacity at 240 V and 400 V AC, dropping to 42 kA at 500 V and 6 kA at 690 V AC.

The 45 mm width (3 TE) fits standard panel layout grids. Depth is 96 mm, height 97 mm — check clearance behind the door if using deep enclosures. Auxiliary switch option is transverse design and can be added as a product extension.

Frequently asked questions

Where can I buy 3RV1021-1HA15 and get a price?

Submit an RFQ through this listing. The part is sourced to order via independent distribution; price and lead time are confirmed at quote time.

What is the closest functional alternative — 3RV2021-1GA15?

The 3RV2021-1GA15 is a higher-rated sibling in the SIRIUS 3RV2 series. It shares the same DIN-rail footprint and screw-terminal design but carries a different continuous current rating and breaking capacity. Verify your motor FLA and available fault current before substituting — the 3RV1021-1HA15 is the correct 8 A, Class 10 variant for 3 kW at 400 V.

What is the depth of 3RV1021-1HA15?

The depth is 96 mm. Combined with 45 mm width and 97 mm height, it fits standard 3-TE panel slots.

What solid conductor sizes does the terminal accept?

The screw terminals accept 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²) solid conductors. Stranded sizes are 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²).

Does 3RV1021-1HA15 drop into a panel designed for 3RV2021-1GA15?

Both share the same 45 mm width and DIN-rail mounting, so the mechanical fit is identical. The electrical ratings differ — verify the load current and fault current before swapping. The 3RV1021-1HA15 is rated 8 A continuous with 100 kA at 400 V; the 3RV2021-1GA15 has its own rating curve.

What compliance documentation is available for 3RV1021-1HA15?

RoHS compliance is confirmed with a substance prohibition date of 05/01/2012. The SIRIUS series typically carries UL, CSA, and CE certifications per Siemens standard practice — request specific declarations from your Siemens channel partner.

MPN
3RV1021-1HA15