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Siemens 3RT2037-1XF40-0LA2 — Contactors

Siemens 3RT2037-1XF40-0LA2 SIRIUS Contactor, 110 V DC Coil

MPN3RT2037-1XF40-0LA2
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Siemens SIRIUS 3RT2037-1XF40-0LA2 contactor, size S2, 110 V DC coil, 65 A at 480 V, 3-pole, screw and snap-on DIN rail mounting.

StockContact for availability
Lead time1-2 Weeks wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RT2037-1XF40-0LA2 — Identification
ParameterValue
Contactor frame sizeS2

Ratings & Performance

3RT2037-1XF40-0LA2 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V55 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V10 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A

Control & Coil

3RT2037-1XF40-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC

Contacts & Poles

3RT2037-1XF40-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3

Protection & Coordination

3RT2037-1XF40-0LA2 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)
Short-circuit coordination type 2, fusegG: 125A (690V,100kA), aM: 63A (690V,100kA), BS88: 100A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)

Connection & Mounting

3RT2037-1XF40-0LA2 — 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 60715
Side-by-side mountingYes

Durability

3RT2037-1XF40-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000

Environmental

3RT2037-1XF40-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m

Mechanical

3RT2037-1XF40-0LA2 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth130 mm

Product details

Panel fit and mounting flexibility

The 3RT2037-1XF40-0LA2: Physical envelope: 130 mm depth, 55 mm width, 114 mm height. The width is the critical dimension for DIN-rail spacing; at 55 mm it occupies one standard modular unit. Operating temperature range spans -40 to +70 °C, covering most indoor and outdoor cabinet environments without derating concerns.

No stock-holding claim is made; each order is quoted individually.

Frequently asked questions

What are the key ratings of 3RT2037-1XF40-0LA2?

Coil voltage is 110 V DC. Main contact ratings: 65 A at 480 V and 52 A at 600 V. Dimensions: 130 mm depth, 55 mm width, 114 mm height.

MPN
3RT2037-1XF40-0LA2