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Siemens 3RV1011-0KA10-ZI45 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1011-0KA10-ZI45 SIRIUS Motor Protection Circuit B

MPN3RV1011-0KA10-ZI45

Siemens SIRIUS, motor protection circuit breaker, size S00, CLASS 10, adjustable overload release 0.9...1.25 A, screw terminals, screw and snap-on mounting onto 35 mm DIN rail.

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

3RV1011-0KA10-ZI45 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS00
3RV1011-0KA10-ZI45 — Electrical
ParameterValue
Power loss (AC, hot)5.5 W
Power loss, per pole (AC, hot)1.8 W
3RV1011-0KA10-ZI45 — Protection & Tripping
ParameterValue
Trip classCLASS 10
3RV1011-0KA10-ZI45 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
3RV1011-0KA10-ZI45 — Mechanical
ParameterValue
Mounting positionany
3RV1011-0KA10-ZI45 — Specifications
ParameterValue
Design Of The ProductFor motor protection
3RV1011-0KA10-ZI45 — Other specifications
ParameterValue
Mountingscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715
At 400 V rated value370 W
Operating current rated value1.25 A
Adjustable pick-up value current of the current-dependent overload release0.9 ... 1.25 A

Product details

Motor protection circuit breaker, size S00

The adjustable overload release covers a setting range of 0.9 to 1.25 A, so you dial in the motor's full-load current rather than swapping the breaker for a different rating. The screw-type terminals on top and bottom accept solid or stranded conductors up to 2.5 mm², with a tightening torque of 0.8 to 1.2 N·m. For a panel-builder, this means the breaker fits into the same DIN-rail footprint as a contactor of the same S00 frame, allowing a direct bus-bar link without extra adaptors.

Integration with S00 contactors

Power dissipation at rated current is 5.5 W total (1.8 W per pole in hot state), which is low enough that no forced cooling is needed in a standard IP20 enclosure.

Frequently asked questions

What is the trip class of the 3RV1011-0KA10-ZI45?

It is CLASS 10, meaning it will trip within 10 seconds at 7.2× the current setting. This is the standard trip class for standard induction motor starting.

What mounting type does this breaker use?

Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715. It can be mounted in any position.

Where can I buy the 3RV1011-0KA10-ZI45?

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

What is the closest functional alternative to the 3RV1011-0KA10-ZI45?

The 3RV1011-0GA10 is the closest sibling — same S00 frame, same CLASS 10 trip, same DIN-rail footprint and screw terminals. The key difference is the overload setting range: the -0GA10 covers 0.45 to 0.63 A, while the -0KA10 covers 0.9 to 1.25 A. If your motor's full-load current falls within 0.9 to 1.25 A, the -0KA10 is the correct fit; the -0GA10 would be undersized and cannot be adjusted up to cover that range.

MPN
3RV1011-0KA10-ZI45