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Siemens 3RT2027-2CK64-3MA0 — Contactors

Siemens 3RT2027-2CK64-3MA0 SIRIUS Power Contactor, S0 Size,

MPN3RT2027-2CK64-3MA0
Active

Siemens SIRIUS 3RT2027-2CK64-3MA0, S0 power contactor, 45 mm width, spring-type coil terminals, screw and snap-on 35 mm DIN rail mounting.

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

3RT2027-2CK64-3MA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT2027-2CK64-3MA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V22 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V5 hp
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2027-2CK64-3MA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz110 V
3RT2027-2CK64-3MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2027-2CK64-3MA0 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 125A (690V,100kA), aM: 50A (690V,100kA), BS88: 125A (415V,80kA)
Short-circuit coordination type 2, fusegG: 50A (690V,100kA), aM: 25A (690V, 100kA), BS88: 50A (415V, 80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2027-2CK64-3MA0 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2027-2CK64-3MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2027-2CK64-3MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2027-2CK64-3MA0 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth144 mm
3RT2027-2CK64-3MA0 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

The coil connection uses spring-type terminals, which speeds wiring and holds up better under vibration than screw clamps — a detail that matters when the panel sees fork-truck rumble or conveyor line chatter.

The contactor is rated for AC-3 motor switching at up to 750 operations per hour, and AC-1 resistive loads at up to 1 000 cycles per hour. Those are the duty-class limits that govern real-world coil and contact life — the AC-3 figure is the one you size against for a motor start/stop application, not the higher AC-1 number. The arcing time is specified at 10 ms, which is tight enough to keep contact erosion predictable in a standard 50/60 Hz line.

The contactor accepts solid or stranded conductors from 1 to 10 mm² on the power circuit, and 2x (0.5 to 2.5 mm²) on the auxiliary circuit.

Frequently asked questions

What are the key dimensions for panel layout?

Width is 45 mm, height 102 mm, depth 144 mm. Clearance required: 10 mm upwards, downwards, and forwards; 6 mm at the sides.

What wire sizes does the contactor accept?

Power circuit accepts solid or stranded 1 to 10 mm². Auxiliary circuit accepts 2x (0.5 to 2.5 mm²). Coil connection uses spring-type terminals.

Can this contactor be mounted on a DIN rail?

Yes, it uses screw and snap-on mounting onto a 35 mm DIN rail per DIN EN 60715. It can also be screw-mounted directly to a panel.

What is the operating temperature range?

Operating range is -25 to +60 °C. Storage range is -55 to +80 °C.

MPN
3RT2027-2CK64-3MA0