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Siemens 3RT2027-1AC24 — Contactors

Siemens 3RT2027-1AC24 SIRIUS Power Contactor, S0 Frame, 24 V

MPN3RT2027-1AC24
Active

Siemens SIRIUS power contactor, S0 frame, 24 VDC coil, screw-type terminals, snap-on 35 mm DIN rail mounting, active lifecycle.

Siemens 3RT2027-1AC24 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

3RT2027-1AC24 — Identification
ParameterValue
Contactor frame sizeS0
3RT2027-1AC24 — 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
3RT2027-1AC24 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT2027-1AC24 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2027-1AC24 — 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)
3RT2027-1AC24 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1 ... 10 mm²
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 60715
Side-by-side mountingYes
3RT2027-1AC24 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2027-1AC24 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2027-1AC24 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth141 mm
3RT2027-1AC24 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

It fastens via screw and snap-on mounting onto 35 mm DIN rail per DIN EN 60715, and the mounting position allows +/-180° rotation on a vertical surface plus +/-22.5° forward/backward tilt. Rated switching frequency depends on the duty class: at AC-1 (resistive loads) it handles up to 1,000 operations per hour; at AC-3 (squirrel-cage motors) and AC-3e, 750 ops/h; at AC-4 (plugging/inching), 250 ops/h. The arcing time sits at 10 ms, and the closing time at 50 Hz is 0.25 s, at 60 Hz 0.28 s.

These clearances govern gland-plate layout and adjacent device spacing in a panel. Wire range for main contacts: solid or stranded 1 to 10 mm², or 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²) for finer parallel runs. The screw-type terminals accept this range without special ferrules, though stranded conductors benefit from bootlace ferrules for consistent torque.

Frequently asked questions

Where can I buy 3RT2027-1AC24 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is 3RT2027-1AC24's listed depth?

The depth is 141 mm, with a width of 45 mm and height of 85 mm.

What wire sizes does the 3RT2027-1AC24 accept?

Solid or stranded conductors from 1 to 10 mm², or two parallel conductors of 0.5 to 1.5 mm² or 0.75 to 2.5 mm².

Will 3RT2027-1AC24 drop into a panel specified around 3RT2024-1AL20-ZX95 without rewiring?

Both are S0-frame SIRIUS contactors with the same 45 mm width and DIN-rail mounting, so the mechanical footprint and rail position are identical. The 3RT2027-1AC24 uses a 24 VDC coil versus the 3RT2024-1AL20-ZX95's coil voltage — verify the control voltage matches before swapping, as the coil terminal arrangement is the same screw-type pattern.

MPN
3RT2027-1AC24