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Siemens 3RT2037-3AF06 — Contactors

Siemens 3RT2037-3AF06 SIRIUS Power Contactor, 65 A at 480 V

MPN3RT2037-3AF06
Active

Siemens SIRIUS power contactor, size S2, 3RT2037-3AF06, 65 A at 480 V AC-3, screw and snap-on 35 mm DIN rail mounting, spring-type terminals.

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

3RT2037-3AF06 — Identification
ParameterValue
Contactor frame sizeS2
3RT2037-3AF06 — 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
3RT2037-3AF06 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.37
Rated value @ 50 Hz110 V
3RT2037-3AF06 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2037-3AF06 — 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)
3RT2037-3AF06 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
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
3RT2037-3AF06 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2037-3AF06 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2037-3AF06 — Mechanical
ParameterValue
Width75 mm
Height114 mm
Depth130 mm
3RT2037-3AF06 — Specifications
ParameterValue
At AC10 ... 18 ms

Product details

DIN Rail Integration and Panel Fit

The 75 mm width and 114 mm height with 130 mm depth mean it occupies a standard three-module footprint on the rail — plan for that slot width in the enclosure layout. Clearance: 10 mm upward and forward, 6 mm at the sides, 10 mm downward. Size S2 is the mechanical frame; the 75 mm width is the key dimension for rail fill factor.

Ratings and Operating Conditions

Coil draws 6 A at 24 V rated value, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. At 230 V rated value the contactor carries 10 hp. The coil operates on 50 Hz at 110 V. The magnet coil uses spring-type terminals — no screw clamping, which speeds wiring and resists vibration loosening. Main contact arcing time spans 10 to 20 ms, and the total break time at AC is 10 to 18 ms. Mechanical life of the contactor typical is 10,000,000 operations. Switching frequency maximums: 800 cycles/h at AC-1, 400 at AC-2, 700 at AC-3, 200 at AC-4, and 700 at AC-3e. Accepts 2x (0.5 to 2.5 mm²) solid or stranded wire. No auxiliary switch included.

Frequently asked questions

What is the 3RT2037-3AF06's motor-switching rating at 480 V?

The 3RT2037-3AF06 is rated for 65 A at 480 V in AC-3 duty, which is the standard motor-switching category for squirrel-cage induction motors. This rating determines the maximum motor load it can switch — typically a 30–40 hp motor at 480 V three-phase.

What panel clearance is needed around the 3RT2037-3AF06?

Minimum clearances: 10 mm upward, 10 mm forward, 6 mm at the sides, and 10 mm downward. The contactor is 75 mm wide, 114 mm high, and 130 mm deep.

Where can I buy the 3RT2037-3AF06 and how is it quoted?

The 3RT2037-3AF06 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 your volume requirements.

MPN
3RT2037-3AF06