Siemens SIRIUS 3RT1044-3AL16 power contactor, size S3, screw-type terminals, AC-4 55 A at 400 V, AC-3 37 kW at 500 V, 90 x 146 x 139 mm, DIN rail mount.
| Parameter | Value |
|---|---|
| Contactor frame size | S3 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 55 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 37 kW |
| Rated value @ 690 V | 18.6 kW |
| Rated value @ 230 V | 6 A |
| Rated value @ 24 V | 10 A |
| Rated value @ 60 V | 2 A |
| Rated value @ 110 V | 1 A |
| Rated value @ 220 V | 0.3 A |
| Parameter | Value |
|---|---|
| Control supply voltage type | AC |
| Parameter | Value |
|---|---|
| Main poles | 3 |
| Main NO contacts | 3 |
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Parameter | Value |
|---|---|
| Short-circuit coordination type 1, fuse | fuse gL/gG: 250 A |
| Short-circuit coordination type 2, fuse | fuse gL/gG: 125 A |
| Aux. switch short-circuit protection, fuse | fuse gL/gG: 10 A |
| Parameter | Value |
|---|---|
| Main circuit connection | screw-type terminals |
| Aux. / control circuit connection | spring-loaded terminals |
| Conductor cross-section, solid | 2x (0.25 ... 2.5 mm²) |
| Conductor cross-section, solid or stranded | 2x (2.5 ... 16 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.25 ... 1.5 mm²) |
| Mounting method | screw and snap-on mounting onto 35 mm and 75 mm standard mounting rail |
| Side-by-side mounting | Yes |
| Parameter | Value |
|---|---|
| Durability (operating cycles, typ.) | 10 000 000 |
| Durability with aux. switch block (cycles, typ.) | 10 000 000 |
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
| Parameter | Value |
|---|---|
| Width | 90 mm |
| Height | 146 mm |
| Depth | 139 mm |
| Parameter | Value |
|---|---|
| At AC | 10 ... 19 ms |
For standard motor starting (AC-3 duty), it is rated at 37 kW at 500 V, and 30 kW at 400 V under AC-2 duty for slip-ring motors. The main current circuit uses screw-type terminals, accepting 2x (0.25...2.5 mm²) solid or 2x (10...50 mm²) stranded conductors.
The enclosure front carries an IP20 rating with a cover or box terminal; the terminal area itself is IP00, so the panel design must provide supplementary protection against accidental contact with live conductors.
The 3RT1044-1FB46 is a peer in the same SIRIUS S3 frame size. The key difference is the terminal type: the -3AL16 uses screw terminals, while the -1FB46 uses spring-cage terminals. If your panel design requires screw terminals for the main circuit, the -3AL16 is the direct fit; the -1FB46 would require a terminal adapter or re-termination.
AC-4 at 400 V: 55 A. AC-3 at 500 V: 37 kW. AC-2 at 400 V: 30 kW. Coil draw at 24 V rated value: 10 A.
RoHS compliance is confirmed with a substance prohibitance date of May 1, 2012. The part carries IP20 protection on the front with cover or box terminal.
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