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Siemens 3RT2027-1XF40-0LA2 — Contactors

Siemens 3RT2027-1XF40-0LA2 SIRIUS S0 Power Contactor, 110 V

MPN3RT2027-1XF40-0LA2
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Siemens SIRIUS 3RT2027-1XF40-0LA2 power contactor, size S0, 110 V DC coil, screw-type terminals, integrated auxiliary switch, screw and snap-on 35 mm 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

3RT2027-1XF40-0LA2 — Identification
ParameterValue
Contactor frame sizeS0
3RT2027-1XF40-0LA2 — 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
3RT2027-1XF40-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2027-1XF40-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT2027-1XF40-0LA2 — 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)
3RT2027-1XF40-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (1 ... 2.5 mm²), 2x (2.5 ... 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
3RT2027-1XF40-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2027-1XF40-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2027-1XF40-0LA2 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth107 mm

Product details

Rated for main contact operation up to 16 to 8 A depending on the load (the DC switching capacity is detailed per voltage below), with a 15 A inrush peak. The DC coil dropout delay spans 30 to 50 ms, and arcing time is a consistent 10 ms.

DC Switching Capacity by Voltage

At 24 V rated value the contactor switches 10 A; at 48 V and 60 V it handles 2 A each; at 110 V it switches 1 A; at 125 V it switches 0.9 A; and at 220 V it switches 0.3 A. The 230 V rating is expressed as 5 hp, which aligns with motor-duty applications at that voltage level.

Dimensions: 85 mm height, 45 mm width, 107 mm depth. Wire capacity for main contacts: solid 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²); stranded 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²).

Frequently asked questions

What are the physical dimensions and mounting requirements?

Dimensions: 85 mm height, 45 mm width, 107 mm depth. Mounts on 35 mm DIN rail per DIN EN 60715 with screw and snap-on; required clearances are 10 mm upwards/forwards/downwards and 6 mm at the side.

MPN
3RT2027-1XF40-0LA2