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Siemens 3RT2027-2AB00 — Contactors

Siemens 3RT2027-2AB00 SIRIUS Power Contactor, S0, 27 A at 48

MPN3RT2027-2AB00
Active

Siemens SIRIUS power contactor, size S0, 3RT2027-2AB00, 27 A at 480 V AC-3, spring-type terminals, screw and snap-on mounting on 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

3RT2027-2AB00 — Identification
ParameterValue
Contactor frame sizeS0
3RT2027-2AB00 — 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 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2027-2AB00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT2027-2AB00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2027-2AB00 — 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)
3RT2027-2AB00 — 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 standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2027-2AB00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2027-2AB00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2027-2AB00 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth97 mm
3RT2027-2AB00 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

SIRIUS S0 power contactor, spring-type terminals, 27 A at 480 V AC-3

The Siemens 3RT2027-2AB00 is a SIRIUS power contactor in size S0, rated for 27 A at 480 V in AC-3 duty — the motor-switching current that governs real-world load selection, not the AC-1 resistive figure. The auxiliary switch is integrated, saving an add-on module slot for basic status feedback.

Clearance and operating range

Mechanical life is typical 10,000,000 operations.

Switching frequency and arcing

Maximum switching rates: 1,000 cycles/hour in AC-1, 750 in AC-2 and AC-3, and 250 in AC-4. Arcing time is 10 to 10 ms.

Frequently asked questions

What is 3RT2027-2AB00's listed depth (97 mm) on this component line?

The depth is 97 mm. That is the dimension from the DIN rail mounting surface to the front of the contactor — important for enclosure depth clearance.

What is 3RT2027-2AB00's listed solid (1... 10 mm²) on this component line?

The solid conductor range is 1 to 10 mm². Stranded conductors also accept 1 to 10 mm²; the auxiliary contact terminals accept 2x (0.5 to 2.5 mm²) solid or stranded.

What compliance documentation does this brand provide for 3RT2027-2AB00 (RoHS, REACH, UL, IEC)?

As a Siemens SIRIUS product, it carries CE marking and is designed to IEC/EN 60947-4-1. RoHS and REACH declarations are available from Siemens documentation. UL/CSA listings are typical for the SIRIUS line, but confirm the specific file number for your jurisdiction.

MPN
3RT2027-2AB00