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Siemens 3RT2037-1AB00 — Contactors

Siemens SIRIUS 3RT2037-1AB00 Power Contactor, 24 VAC Coil, 6

MPN3RT2037-1AB00
Active

Siemens SIRIUS S2 power contactor, 3RT2037-1AB00, 24 VAC 50 Hz coil, 65 A at 480 V, screw and snap-on DIN rail mounting.

$114.30Ref. price · indicative, final on quote
Siemens 3RT2037-1AB00 datasheet (PDF)
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

3RT2037-1AB00 — Identification
ParameterValue
Contactor frame sizeS2
3RT2037-1AB00 — 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
3RT2037-1AB00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.37
Rated value @ 50 Hz24 V
3RT2037-1AB00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2037-1AB00 — 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)
3RT2037-1AB00 — 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
3RT2037-1AB00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2037-1AB00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2037-1AB00 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth130 mm
3RT2037-1AB00 — Specifications
ParameterValue
At AC10 ... 18 ms

Product details

It carries a 65 A rated operational current at 480 V, making it suitable for medium-horsepower motors and high-current heating elements. The magnet coil uses screw-type terminals, and the main contacts accept solid or stranded wire: 2x (0.5... 1.5 mm²) or 2x (0.75... 2.5 mm²). It includes an auxiliary switch (1 N/O + 1 N/C, 18... 1 configuration for main contacts) and supports switching frequencies up to 800 operations per hour in AC-1 duty, 700/h in AC-3, and 200/h in AC-4.

Dimensions: 114 mm height, 55 mm width, 130 mm depth. The 55 mm width fits standard 4-module DIN-rail spacing.

Typical mechanical life is 10,000,000 operations. Arcing time is 10... 20 ms; closing time at AC is 10... 18 ms.

Frequently asked questions

What is the closest functional second-source for 3RT2037-1AB00?

The closest peer is 3RT2037-1AF00-ZX95. Both are SIRIUS S2 contactors with identical dimensions and mounting, but the 3RT2037-1AF00-ZX95 has a different coil voltage — check your control voltage before substituting. The 3RT2037-1AB00 uses a 24 VAC 50 Hz coil.

What are the key dimensions of 3RT2037-1AB00?

Height 114 mm, width 55 mm, depth 130 mm. The 55 mm width fits standard 4-module DIN-rail spacing.

Will 3RT2037-1AB00 drop into a panel specified around 3RT2037-1AF00-ZX95 without rewiring?

Yes — both are Size S2 contactors with the same mounting footprint (screw/snap-on 35 mm DIN rail), same dimensions, and same terminal specifications. The only difference is the coil voltage; verify your control circuit matches 24 VAC 50 Hz before installing.

MPN
3RT2037-1AB00