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Siemens 3RV1011-0KA20 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1011-0KA20 SIRIUS Motor Protection Circuit Breake

MPN3RV1011-0KA20

Siemens SIRIUS motor protection circuit breaker, 3RV1011-0KA20, 1.25 A continuous current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, spring-loaded terminals, 45 mm width.

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

3RV1011-0KA20 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1011-0KA20 — 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)5.5 W
Power loss, per pole (AC, hot)1.8 W
3RV1011-0KA20 — Protection & Tripping
ParameterValue
Overload release setting range0.9 ... 1.25 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)2 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1011-0KA20 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1011-0KA20 — Connections
ParameterValue
Main-circuit terminal typespring-loaded terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (0.25 ... 1.5 mm²)
Conductor range, AWG (main contacts)2x (24 ... 14)
3RV1011-0KA20 — Mechanical
ParameterValue
Height90 mm
Width45 mm
Depth81 mm
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Mounting positionany
3RV1011-0KA20 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1011-0KA20 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

Motor protection circuit breaker, 1.25 A, CLASS 10

Breaking capacity reaches 100 kA at 400 V AC and holds that figure at 240 V and 500 V, then drops sharply to 2 kA at 690 V AC — so at 400 V it can interrupt a bolted fault up to 100 kA without upstream fuses, but at 690 V the fault current must be limited to 2 kA or a higher-rated device is needed upstream.

DIN-rail mounting and terminal details

Main and auxiliary/control circuits both use spring-loaded terminals, accepting solid conductors 2x (0.25... 2.5 mm²) or finely stranded with ferrule 2x (0.25... 1.5 mm²). AWG equivalents are 2x (24... 14) for the main contacts. Finger-safe touch protection is provided on the front (IP20). The 45 mm width and 81 mm depth fit a standard SIRIUS 3RV1 footprint; backwards clearance is 0 mm, side clearance also 0 mm, so modules can be ganged without spacing.

Substance prohibitance date of 01.01.2013 aligns with RoHS compliance; operating temperature range is -20 to +60 °C, storage and transport range -50 to +80 °C. Surge voltage resistance rated at 6 000 V, shock resistance 25g / 11 ms — suitable for industrial environments with moderate vibration and transient overvoltages.

Frequently asked questions

Will 3RV1011-0KA20 drop into a panel specified for 3RV1011-0HA10 without rewiring?

Both are 45 mm wide SIRIUS 3RV1 breakers with the same DIN-rail footprint and spring-loaded terminals, so mechanical fit is identical. The difference is the thermal setting — 3RV1011-0KA20 is 1.25 A while 3RV1011-0HA10 is a different rating — so verify the motor FLA matches before substitution.

MPN
3RV1011-0KA20