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Siemens 3RT7027-1AG25 — Contactors

Siemens 3RT7027-1AG25 SIRIUS Contactor, 3-pole, AC coil 110

MPN3RT7027-1AG25

Siemens SIRIUS 3RT7027-1AG25, 3-pole contactor, size S0, screw terminals, AC coil 110 V 50/60 Hz, IP20 front and terminal.

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

3RT7027-1AG25 — Identification
ParameterValue
Contactor frame sizeS0
3RT7027-1AG25 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 690 V1 A
Rated value @ 230 V6 A
3RT7027-1AG25 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.24
Rated value @ 50 Hz110 V
3RT7027-1AG25 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliabilityacceptability for PLC control (17 V, 5 mA)
3RT7027-1AG25 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegL/gG NH 3NA: 125 A
Short-circuit coordination type 2, fusegL/gG NH 3NA: 50 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT7027-1AG25 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT7027-1AG25 — Environmental
ParameterValue
Operating temperature range-10 ... +55 °C
Storage temperature range-25 ... +70 °C
Installation altitude, max.2 000 m
3RT7027-1AG25 — Mechanical
ParameterValue
Width55 mm
Height85.5 mm
Depth91 mm

Product details

The AC coil is rated at 110 V, 50/60 Hz, drawing 0.24 A at both frequencies.

The S0 footprint is 55 mm wide, 85.5 mm tall, 91 mm deep. The IP20 protection on front and terminals requires the contactor to be installed inside a cabinet or enclosure.

Ratings and application

For AC-3 motor switching duty, the maximum operating voltage is 690 V. The auxiliary contact block carries 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V — sufficient for signaling and interlocking in most control circuits. Switching frequency is rated at 800 operations per hour maximum under AC-3 duty, and 250 per hour under AC-4 (plugging/reversing). Short-circuit protection coordination: with type 2 coordination, use a 50 A gL/gG fuse; with type 1 coordination, a 125 A gL/gG fuse. The contactor withstands 12.5g for 5 ms and 7.8g for 10 ms sine-pulse shock — relevant for transport and machine-mounted installations.

Coil and control

The AC coil consumes 0.72 W during closing and 0.24 W holding. Operating temperature range is -10 to +55 °C during operation, with storage from -25 to +70 °C. The product extension for auxiliary switches is available, allowing field addition of contact blocks. Terminals accept 2 x (0.5 to 1.5 mm²) solid or stranded, or 2 x (0.75 to 2.5 mm²) with ferrule. Fine-stranded wire with core-end processing is supported for the same ranges.

Frequently asked questions

What is the depth of the 3RT7027-1AG25?

The depth is 91 mm, with a width of 55 mm and height of 85.5 mm.

MPN
3RT7027-1AG25