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Siemens 3RT2027-2AG24 — Contactors

Siemens 3RT2027-2AG24 SIRIUS Power Contactor, Size S0, 24 VD

MPN3RT2027-2AG24
Active

Siemens SIRIUS 3RT2027-2AG24, size S0 power contactor, 24 VDC coil, spring-type terminals, 45 mm width, screw and snap-on DIN rail mounting.

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

3RT2027-2AG24 — Identification
ParameterValue
Contactor frame sizeS0
3RT2027-2AG24 — 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
3RT2027-2AG24 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz110 V
3RT2027-2AG24 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2027-2AG24 — 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)
3RT2027-2AG24 — 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
3RT2027-2AG24 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2027-2AG24 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2027-2AG24 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth144 mm
3RT2027-2AG24 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

The coil holds at 24 VDC nominal, drawing 6 A at rated value — a figure that matters for loop-powered PLC outputs or safety relay contacts driving the coil directly.

Integration and mounting constraints

Envelope is 102 mm high by 45 mm wide by 144 mm deep. The depth is the dimension that often catches panel builders — at 144 mm it projects well past the DIN rail, so gland-plate clearance or a deep enclosure backpan is required. These are minimums for heat dissipation and arc flash containment — stacking contactors without these gaps derates the switching capacity.

Electrical ratings and switching duty

Electrical life: AC-1 allows 1,000 cycles/hour, AC-3 and AC-3e allow 750 cycles/hour, AC-4 allows 250 cycles/hour. Arcing time is 10 to 10 ms. Main contact gap is 18 to 8.

The wide storage range covers unheated warehouses; the operating range suits most control cabinets with passive ventilation.

Frequently asked questions

What are the key mounting dimensions?

The contactor is 102 mm high, 45 mm wide, and 144 mm deep. It mounts on 35 mm DIN rail with screw or snap-on fastening. Clearance requirements: 10 mm up/down/forward, 6 mm at the sides.

What wire sizes does the spring-type coil terminal accept?

Solid or stranded conductors from 1 to 10 mm². For two-wire connections, 2x (0.5 to 2.5 mm²) is accepted.

What is the coil holding current at 24 VDC?

6 A at rated value. This is the current drawn while the coil is energized, relevant for sizing the control transformer or PLC output driving the coil.

MPN
3RT2027-2AG24