Siemens SIRIUS power contactor, 3RT2037-1AL24, S2 frame, 65 A at 480 V AC-3, screw-type coil terminals, 230 V 50 Hz coil, screw and snap-on mounting on 35 mm DIN rail.
| Parameter | Value |
|---|---|
| Contactor frame size | S2 |
| 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 | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 10 hp |
| Rated value @ 24 V | 6 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 |
| Rated value @ 50 Hz | 0.36 |
| Rated value @ 50 Hz | 230 V |
| 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 | gG: 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, fuse | gG: 125A (690V,100kA), aM: 63A (690V,100kA), BS88: 100A (415V,80kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (500 V, 1 kA) |
| Parameter | Value |
|---|---|
| Main circuit connection | screw-type terminals |
| Aux. / control circuit connection | screw-type terminals |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Mounting method | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715 |
| 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 | 55 mm |
| Height | 114 mm |
| Depth | 174 mm |
| Parameter | Value |
|---|---|
| At AC | 10 ... 18 ms |
The Siemens 3RT2037-1AL24 is a SIRIUS power contactor in the S2 frame size, rated for 65 A at 480 V in AC-3 duty — the motor-switching current that governs real load sizing.
Coil terminals are screw-type, accepting 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded wire. The main contact configuration is 3 normally open poles (3RT series standard). No factory-fitted auxiliary switch block — add one from the SIRIUS range if needed.
It is rated 65 A at 480 V in AC-3 duty, which is the motor-switching current that determines load sizing.
The 3RT2037-1AL24 is a larger S2 frame (55 mm wide, 114 mm high, 174 mm deep) compared to the S0 frame of the 3RT2016-1AG62. Panel cutouts and DIN-rail spacing may need adjustment; verify dimensions before swapping.
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
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