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Siemens 3RT2037-1AC24 — Contactors

Siemens 3RT2037-1AC24 SIRIUS Power Contactor, 65 A at 480 V

MPN3RT2037-1AC24
Active

Siemens SIRIUS 3RT2037-1AC24 power contactor, size S2, 65 A AC-3 at 480 V, 24 V 50/60 Hz coil, screw-type terminals, DIN rail mount.

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

3RT2037-1AC24 — Identification
ParameterValue
Contactor frame sizeS2
3RT2037-1AC24 — 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 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2037-1AC24 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.36
Rated value @ 50 Hz24 V
3RT2037-1AC24 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2037-1AC24 — 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)
3RT2037-1AC24 — 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 60715
Side-by-side mountingYes
3RT2037-1AC24 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2037-1AC24 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2037-1AC24 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth174 mm
3RT2037-1AC24 — Specifications
ParameterValue
At AC10 ... 18 ms

Product details

The Siemens SIRIUS 3RT2037-1AC24 is a size S2 power contactor rated for 65 A in AC-3 duty at 480 V — that's the motor-switching current, not the resistive load. It handles a 24 V 50/60 Hz coil with screw-type terminals, and mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715.

Dimensions are 55 mm wide, 114 mm tall, 174 mm deep — that's a compact S2 footprint for a 65 A contactor.

Switching capacity and duty cycles

Rated for AC-1 (resistive) at 800 operations/hour, AC-3 (motor start/run) at 700/h, AC-4 (plugging/inching) at 200/h. The AC-3e rating also sits at 700/h. Arcing time runs 10–20 ms; closing time is 10–18 ms. These numbers tell you it's built for frequent cycling in motor control — a conveyor or pump contactor that cycles at speed, not a once-a-day breaker.

Frequently asked questions

What are the key ratings of 3RT2037-1AC24?

AC-3 motor-switching rating of 65 A at 480 V, 24 V 50/60 Hz coil, size S2 frame, screw-type terminals, DIN rail mount. Operating temperature -25 to +60 °C.

Where can I buy 3RT2037-1AC24?

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

MPN
3RT2037-1AC24