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Siemens 3RV2021-1DA20-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-1DA20-ZX95 SIRIUS Motor Protection Circuit B

MPN3RV2021-1DA20-ZX95
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Siemens SIRIUS 3RV2021-1DA20-ZX95 motor protection circuit breaker, Class 10 trip, 100 kA breaking capacity at 400 V AC, phase failure detection, spring-loaded terminals, screw and snap-on 35 mm DIN rail mounting.

Siemens 3RV2021-1DA20-ZX95 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

3RV2021-1DA20-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-1DA20-ZX95 — Electrical
ParameterValue
Rated operational current (Ie)3.2 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
3RV2021-1DA20-ZX95 — Protection & Tripping
ParameterValue
Overload release setting range2.2 ... 3.2 A
Instantaneous short-circuit trip current42 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)10 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V10 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2021-1DA20-ZX95 — 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
3RV2021-1DA20-ZX95 — Connections
ParameterValue
Main-circuit terminal typespring-loaded terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (1 ... 10 mm²)
Conductor cross-section, finely stranded with ferrule2x (1 ... 6 mm²)
3RV2021-1DA20-ZX95 — Mechanical
ParameterValue
Height119 mm
Width45 mm
Depth97 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2021-1DA20-ZX95 — 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
3RV2021-1DA20-ZX95 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

Motor protection with Class 10 trip and phase failure detection

The breaker is rated for a 100 kA breaking capacity at 400 V AC and 500 V AC, and 10 kA at 690 V — high enough to handle most industrial fault-current scenarios without requiring an upstream current-limiting fuse for SCCR compliance.

Mounting and wiring for panel integration

Depth is 97 mm, height 119 mm. Clearance requirements: 50 mm upward, 50 mm downward, 30 mm at the side; zero forward or backward clearance needed. That side clearance is tighter than many breakers — useful when packing multiple units side-by-side in a crowded enclosure.

The lifecycle stage is listed as current, meaning the manufacturer continues to produce and support this order code. No successor has been assigned.

Frequently asked questions

What is the breaking capacity of 3RV2021-1DA20-ZX95?

It carries a 100 kA breaking capacity at 400 V AC and 500 V AC, and 10 kA at 690 V.

Does 3RV2021-1DA20-ZX95 detect phase failure?

Yes, phase failure detection is built in.

What terminals does 3RV2021-1DA20-ZX95 use?

Spring-loaded terminals accepting 2x 1 to 10 mm² solid or stranded wire.

Where can I buy 3RV2021-1DA20-ZX95?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RV2021-1DA20-ZX95