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Siemens 3RT1044-1AV60 — Contactors

Siemens 3RT1044-1AV60 SIRIUS Power Contactor, 37 kW at 500 V

MPN3RT1044-1AV60

Siemens SIRIUS power contactor, size S3, 3RT1044-1AV60, 37 kW at 500 V, 55 A at AC-4 400 V, screw-type terminals, IP20 front, 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

3RT1044-1AV60 — Identification
ParameterValue
Contactor frame sizeS3
3RT1044-1AV60 — 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 V37 kW
Rated value @ 690 V18.6 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1044-1AV60 — Control & Coil
ParameterValue
Control supply voltage typeAC
3RT1044-1AV60 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1044-1AV60 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 250 A
Short-circuit coordination type 2, fusefuse gL/gG: 125 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1044-1AV60 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, solid or stranded2x (2.5 ... 16 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 and 75 mm standard mounting rail
Side-by-side mountingYes
3RT1044-1AV60 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1044-1AV60 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1044-1AV60 — Mechanical
ParameterValue
Width70 mm
Height146 mm
Depth139 mm
3RT1044-1AV60 — Specifications
ParameterValue
At AC10 ... 19 ms

Product details

It is rated for motor switching at 37 kW at 500 V and 18.6 kW at 690 V, which means it handles moderate-to-heavy induction motor loads in a standard 35 mm or 75 mm DIN-rail panel.

The auxiliary contact ratings are given for DC switching: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and 6 A at 230 V AC. These are the maximum continuous currents the auxiliary contacts can make and break at those voltages — useful for control-circuit isolation on a 24 VDC PLC output or a 230 VAC pilot lamp. The AC-2 rating of 30 kW at 400 V covers slip-ring motor starting, where the contactor closes on reduced current and opens at rated current. That means the total break time stays under about 34 ms — fast enough for most motor-protection coordination with upstream fuses or circuit breakers.

The contactor measures 146 mm high, 70 mm wide, and 139 mm deep. The front is IP20 with the cover or box terminal installed; the terminal area itself is IP00, so keep live parts behind a panel door or cover during operation.

Frequently asked questions

What compliance documentation does this contactor have?

The part carries a RoHS compliance date of 05/01/2012, confirming it meets the EU RoHS directive for restricted substances.

What are the key dimensions for panel layout?

The contactor measures 146 mm high, 70 mm wide, and 139 mm deep. It mounts on 35 mm or 75 mm DIN rail, and side-by-side mounting is allowed.

What wire sizes does the screw terminal accept?

The main circuit terminals accept solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded wire: 2x (10 to 50 mm²). Solid or stranded: 2x (2.5 to 16 mm²).

MPN
3RT1044-1AV60