Siemens 3RT1044-1AK61 AC Contactor
$85.00
The Siemens 3RT1044-1AK61 AC contactor is a 3-pole SIRIUS Size S3 power contactor rated 65 A at AC-3, 400 V. Featuring a 120V AC coil, it switches motor loads up to 30 kW for industrial control and motor starter applications.
1 in stock
Description
- SIRIUS S3 Frame: Handles 65 A AC-3 motor loads.
- Three-Pole Design: Switches three-phase loads at 400V.
- Screw-Type Terminals: Accept 2.5–16 mm², solid conductors.
- DIN Rail Mount: Installs on 35 mm or 75 mm rails.
- Long Service Life: Delivers 10 million mechanical cycles typically.
Documentation
Technical Specifications
| Manufacturer | Siemens |
|---|---|
| Part Number | 3RT1044-1AK61 |
| Type | Contactor |
| Contactor Size | S3 |
| Operating Power | 30kW at 400V AC-315 1kW at 400V AC-4 |
| Supply Voltage | 120V AC at 60Hz |
| Enclosure Rating | IP20 (front), IP00 (terminal) |
| Connection Type | Screw Terminals |
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Description
The Siemens 3RT1044-1AK61 AC contactor switches three-phase motor loads in industrial control panels and motor starter assemblies. Part of the SIRIUS 3RT1 family, it handles pumps, conveyors, compressors, and similar machinery up to 30 kW at 400 V under AC-3 duty, with AC-1 capacity to 100 A for resistive loads. The Size S3 frame suits OEM panel builders and maintenance teams needing motor-duty capacity without sizing up to a larger contactor.
Screw-type terminals on main and control circuits accept solid conductors from 2.5 to 16 mm² and AWG 10 to 1/0, so most panel wiring runs in without re-spec, and the contactor snap-mounts to standard 35 mm or 75 mm DIN rail. Beyond installation, a typical mechanical life of 10 million switching cycles makes it suited to high-duty applications.
Frequently Asked Questions
Is the 3RT1044-1AK61 a direct replacement for the AK60?
Largely yes. The AK61 uses a 120V AC 60 Hz coil only, while the AK60 is dual-frequency 110V/50 Hz and 120V/60 Hz. All other ratings match.
What is the maximum motor rating for this contactor?
It switches motors up to 30 kW at 400V under AC-3 duty with 65 A operational current. AC-1 loads can reach 100 A at 400V.
What certifications does the 3RT1044 series carry?
It carries UL, CSA, CCC, EAC, and RCM approvals, plus CE marking and marine certifications from ABS, Lloyd's Register, RINA, and RMRS.
