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Siemens 3RT7027-1AB00 — Contactors

Siemens 3RT7027-1AB00 S0 Contactor, 24 V 50/60 Hz, 3-Pole, 4

MPN3RT7027-1AB00

Siemens SIRIUS S0 contactor, 3RT7027-1AB00, 3-pole, 24 V 50/60 Hz coil, screw terminals, 45 mm width, IP20, current production.

Siemens 3RT7027-1AB00 datasheet (PDF)
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

3RT7027-1AB00 — Identification
ParameterValue
Contactor frame sizeS0
3RT7027-1AB00 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 690 V1 A
Rated value @ 230 V6 A
3RT7027-1AB00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.24
Rated value @ 50 Hz24 V
3RT7027-1AB00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliabilityacceptability for PLC control (17 V, 5 mA)
3RT7027-1AB00 — 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
3RT7027-1AB00 — 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 DIN rail according to DIN EN 50022
Side-by-side mountingYes
3RT7027-1AB00 — Environmental
ParameterValue
Operating temperature range-10 ... +55 °C
Storage temperature range-25 ... +70 °C
Installation altitude, max.2 000 m
3RT7027-1AB00 — Mechanical
ParameterValue
Width45 mm
Height85.5 mm
Depth91 mm

Product details

The 3RT7027-1AB00: The AC-3 rating (motor switching) is specified up to 690 V, with a maximum electrical endurance of 800 operations per hour at AC-3 and 250 ops/h at AC-4 (inching/plugging duty). The 24 V coil draws 0.24 W holding power at both 50 and 60 Hz — a low enough draw that a standard 24 V control transformer can drive multiple contactors without sagging. Pollution degree 3 (conductive or dry non-conductive pollution) suits industrial environments where panels see dust and condensation. For coordination, Type 2 requires a 50 A gL/gG fuse; Type 1 allows up to 125 A — the difference is whether the contactor survives a fault or just clears it without welding.

Side-by-side mounting is allowed with no derating gap — useful when packing multiple contactors in a tight row.

Frequently asked questions

Who supplies 3RT7027-1AB00 and how is it quoted for volume purchases?

This part is sourced through independent distribution channels. It is quoted to order against an RFQ; availability and current pricing are confirmed at quote time.

Will 3RT7027-1AB00 drop into a panel specified around 3RT6028-1AB00 without rewiring?

The 3RT7027-1AB00 shares the same S0 frame size, 45 mm width, and screw-terminal pattern as the 3RT6028-1AB00, so mechanical fit and terminal layout are identical. The 24 V coil and main pole count match. No rewiring of the panel layout is needed, but verify the coil voltage and fuse coordination against your existing design.

What compliance documentation does this brand provide for 3RT7027-1AB00?

As a Siemens SIRIUS product, the 3RT7027-1AB00 carries CE marking for the European market and is designed to IEC/EN 60947-4-1 standards. RoHS and REACH compliance declarations are available from Siemens documentation. Specific UL/CSA listings should be verified against the exact variant marking on the device label.

MPN
3RT7027-1AB00