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Siemens 3RV1021-1AA10-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1AA10-ZX95 SIRIUS Motor Protection Circuit B

MPN3RV1021-1AA10-ZX95

Siemens SIRIUS 3RV1021-1AA10-ZX95, motor protection circuit breaker, 1.6 A rated continuous current, CLASS 10 trip, 100 kA breaking capacity at 400 V AC, screw terminals, IP20 front, 45 mm wide, DIN EN 50022 rail mount.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RV1021-1AA10-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1AA10-ZX95 — 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
3RV1021-1AA10-ZX95 — Protection & Tripping
ParameterValue
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
3RV1021-1AA10-ZX95 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
3RV1021-1AA10-ZX95 — 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)
3RV1021-1AA10-ZX95 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting positionany
3RV1021-1AA10-ZX95 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-1AA10-ZX95 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The main contacts are rated for 100,000 mechanical operations typical, which aligns with the service life expected in a panel that sees regular switching. Power dissipation is 7.25 W total in hot operating state at AC, or 2.4 W per pole — heat that needs to be considered when spacing devices in a sealed enclosure.

Mounting and integration — DIN rail, screw terminals, IP20 front

Width is 45 mm, depth 96 mm, height 97 mm. Backwards clearance is 0 mm, and side clearance is also 0 mm — no extra air gap needed between units for heat dissipation in normal use, though the 7.25 W total dissipation should still be checked against the enclosure's thermal budget. Main circuit connections are screw-type terminals, accepting solid or stranded conductors: 2x (1 … 2.5 mm²) and 2x (2.5 … 6 mm²) for both solid and stranded wire, with the same ranges for finely stranded with core end processing. AWG equivalents for main contacts are 2x (14 … 10).

Sourcing and availability — quoted to order against RFQ

This is a current-production Siemens SIRIUS motor protection circuit breaker.

Frequently asked questions

What is the breaking capacity of 3RV1021-1AA10-ZX95 at 400 V?

100 kA at 400 V AC, and the same 100 kA rating applies at 240 V, 500 V, and 690 V AC. This is a very high interrupting rating for a 1.6 A motor protection breaker, so it can be used in high-fault-current installations without an upstream fuse for SCCR.

What is the closest functional alternative to 3RV1021-1AA10-ZX95?

The closest peer within the SIRIUS family is the 3RV1011-0GA10, which shares the same form factor and DIN-rail mounting. The key difference is the continuous current rating and trip class — verify your motor's full-load current and start-up profile to decide which one fits. If your panel was laid out for a 3RV1011-0GA10, the 3RV1021-1AA10-ZX95 will physically drop into the same footprint and rail position without rewiring the main terminals, but the protection settings differ.

Where can I buy 3RV1021-1AA10-ZX95?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time on your quantity.

What is the depth of 3RV1021-1AA10-ZX95?

96 mm. The width is 45 mm and height is 97 mm.

What conductor sizes does the 3RV1021-1AA10-ZX95 accept?

Screw terminals accept 2x (1 … 2.5 mm²) and 2x (2.5 … 6 mm²) for both solid and stranded conductors, with the same ranges for finely stranded with ferrule. AWG equivalent is 2x (14 … 10).

MPN
3RV1021-1AA10-ZX95