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Siemens 3RV1021-1DA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1DA10 SIRIUS Motor Protection CB, 3.2 A, Cla

MPN3RV1021-1DA10

Siemens SIRIUS motor protection circuit breaker, 3RV1021-1DA10, 3.2 A continuous rated current, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw terminals, IP20 front, 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

3RV1021-1DA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1DA10 — 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
3RV1021-1DA10 — Protection & Tripping
ParameterValue
Overload release setting range2.2 ... 3.2 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)8 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1021-1DA10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-1DA10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)
Conductor range, AWG (main contacts)2x (14 ... 10)
3RV1021-1DA10 — 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
3RV1021-1DA10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-1DA10 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The Siemens SIRIUS 3RV1021-1DA10 is a motor protection circuit breaker rated for 3.2 A continuous current with Trip Class 10, designed for protecting three-phase motors up to 1.1 kW at 400 V AC.

Breaking Capacity and Voltage Ratings

This breaker delivers 100 kA breaking capacity at 240 V, 400 V, and 500 V AC, dropping to 8 kA at 690 V AC. The 100 kA figure at 400 V means it can interrupt high-fault-current scenarios common in industrial distribution without upstream coordination headaches — it's sized for the high short-circuit current available near a transformer.

Trip Characteristics and Motor Protection

No ground-fault detection on this variant; that's a separate accessory add.

Screw terminals on both main and auxiliary/control circuits accept solid or stranded wire: 2× (1…2.5 mm²) or 2× (2.5…6 mm²) per clamp, plus AWG 14–10 for the main contacts.

Frequently asked questions

How do I get current pricing and availability for 3RV1021-1DA10?

Submit an RFQ through this listing. Pricing and stock are confirmed at quote time against your required quantity — we source through independent distribution and can quote against your BOM line.

What is the depth of 3RV1021-1DA10?

The 3RV1021-1DA10 has a depth of 96 mm, a width of 45 mm, and a height of 97 mm — a compact DIN-rail footprint that leaves zero clearance needed at the back or sides.

What wire sizes does the 3RV1021-1DA10 accept?

The screw terminals on the main circuit accept 2× (1…2.5 mm²) or 2× (2.5…6 mm²) solid or stranded wire, and 2× AWG 14–10 for the main contacts. Auxiliary and control circuit terminals use the same screw-type design with the same wire ranges.

Will 3RV1021-1DA10 drop into a panel specified around 3RV1011-0HA10?

Both are SIRIUS motor protection breakers with the same 45 mm width and DIN-rail snap-on mounting, so the mechanical fit is the same. The 3RV1021-1DA10 carries a higher 3.2 A rating and 100 kA breaking capacity at 400 V versus the 3RV1011-0HA10's lower ratings — check your motor FLA and available fault current before swapping without recalculating coordination.

What compliance documentation does Siemens provide for 3RV1021-1DA10?

RoHS compliance is confirmed with a substance prohibition date of 01.05.2012. The breaker carries IP20 front protection and is designed for 35 mm DIN rail per DIN EN 50022. For full UL, IEC, and REACH documentation, the manufacturer's standard compliance pack applies to this SIRIUS series device.

MPN
3RV1021-1DA10