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Siemens 3RV1021-0JA10-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-0JA10-ZX95 SIRIUS Motor Protection Circuit B

MPN3RV1021-0JA10-ZX95

Siemens SIRIUS motor protection circuit breaker, 3RV1021-0JA10-ZX95, 1 A rated continuous current, Class 10 trip, 100 kA breaking capacity at 400 V AC, screw terminals, 45 mm wide.

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

3RV1021-0JA10-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-0JA10-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
3RV1021-0JA10-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
3RV1021-0JA10-ZX95 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
3RV1021-0JA10-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)
3RV1021-0JA10-ZX95 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting positionany
3RV1021-0JA10-ZX95 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-0JA10-ZX95 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

Its 1 A continuous current rating paired with a Class 10 trip characteristic means it protects motors against overload and short-circuit, tripping fast enough to prevent thermal damage during a stalled-rotor start — the Class 10 curve clears within 10 seconds at 7.2× rated current, which is the standard for standard-duty induction motors driving pumps, fans, and conveyors.

Breaking capacity and fault clearing

Rated breaking capacity hits 100 kA across the board — at 240 V, 400 V, 500 V, and 690 V AC. For a 1 A motor protector, that is a very high interrupting rating, which simplifies coordination with upstream feeders.

Width is 45 mm, depth 96 mm, height 97 mm — a compact three-pole footprint. Zero clearance needed at the back or sides, so it rows tightly on the rail without derating. Screw-type terminals on the main circuit accept 1…2.5 mm² solid or stranded (two conductors per clamp) or 2.5…6 mm² (two conductors). The 0 mm side clearance means you can pack breakers edge-to-edge in a multi-motor panel without worrying about heat buildup between units.

Shock rated at 25 g for 11 ms, which covers most industrial vibration environments. Mechanical endurance is 100,000 operations on the main contacts, typical for a motor-starting duty cycle of 15 operations per hour at AC-3.

Protection features and auxiliary contacts

Ground fault detection is not included; that requires an external module. The breaker accepts auxiliary switches (sold separately) for remote status indication, but comes with zero factory-fitted auxiliary contacts.

Frequently asked questions

Where can I buy 3RV1021-0JA10-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 offer.

What is the breaking capacity of 3RV1021-0JA10-ZX95?

100 kA at 240 V, 400 V, 500 V, and 690 V AC. That is a high interrupting rating for a 1 A motor protector, allowing it to clear faults on high-capacity supply transformers.

Does 3RV1021-0JA10-ZX95 include phase failure protection?

Yes, phase failure detection is built in. Ground fault detection is not included and requires an external module.

What wire sizes fit the terminals on 3RV1021-0JA10-ZX95?

Screw terminals accept 1…2.5 mm² solid or stranded (two conductors per clamp) or 2.5…6 mm² (two conductors). AWG equivalents are 14…10 for the smaller range.

MPN
3RV1021-0JA10-ZX95