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Siemens 3RT2027-2AF00 — Contactors

Siemens 3RT2027-2AF00 SIRIUS Power Contactor, S0, 27 A at 48

MPN3RT2027-2AF00
Active

Siemens SIRIUS 3RT2027-2AF00 power contactor, size S0, 27 A at 480 V AC-3, screw and snap-on 35 mm DIN rail mounting, spring-type coil terminals.

$54.61Ref. price · indicative, final on quote
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

3RT2027-2AF00 — Identification
ParameterValue
Contactor frame sizeS0
3RT2027-2AF00 — 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
3RT2027-2AF00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz110 V
3RT2027-2AF00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2027-2AF00 — 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)
3RT2027-2AF00 — 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
3RT2027-2AF00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2027-2AF00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2027-2AF00 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth97 mm
3RT2027-2AF00 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

The 230 V motor rating is 5 hp, giving a quick cross-check for North American panel specs. The coil terminals use spring-type connections, while the main power and auxiliary circuits accept solid or stranded conductors from 1 to 10 mm² — no special ferrules required for the main wires, though fine-stranded (2x 0.5 to 2.5 mm²) is also listed for the auxiliary contacts.

The S0 frame measures 102 mm high by 45 mm wide by 97 mm deep. That depth is worth noting if your enclosure has a shallow gland plate or a back-panel barrier — 97 mm is deeper than some compact contactors, so check the clearance behind the DIN rail before committing the layout.

Switching performance and life

Electrical life depends on the duty: at AC-1 (resistive loads) it can manage up to 1,000 operations per hour; at AC-3 (motor starting) the max is 750 per hour; at AC-4 (plugging/inching) it drops to 250 per hour. Arcing time is listed at 10 ms at AC, which is typical for a contactor of this size — fast enough to limit contact wear during normal switching.

Frequently asked questions

What are the key ratings for this contactor?

AC-3 motor rating is 27 A at 480 V, with a 5 hp rating at 230 V. Coil draws 0.25 A at 50 Hz. Mechanical life is 10 million operations typical.

What conductor sizes does it accept?

Main power terminals accept solid or stranded conductors from 1 to 10 mm². Auxiliary terminals accept 2x (0.5 to 2.5 mm²) fine-stranded.

What are the mounting dimensions and clearances?

The contactor is 102 mm high, 45 mm wide, and 97 mm deep. It mounts on 35 mm DIN rail. Clearances needed: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the sides.

MPN
3RT2027-2AF00