Siemens SIRIUS S2 power contactor, 3RT2037-1SF30, 83-150 V AC/DC coil, screw-type terminals, 55 mm wide, DIN rail mount, current production.
| 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 | 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/DC |
| Rated value @ 50 Hz | 2 VA |
| Rated value @ 50 Hz | 83 ... 150 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.) | 5 000 000 |
| Durability with aux. switch block (cycles, typ.) | 5 000 000 |
| 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 | 130 mm |
| Parameter | Value |
|---|---|
| At AC | 30 ... 55 ms |
That fits most standard enclosures without reworking the gland plate.
Rated for 800 switching cycles per hour at AC-1, 700/h at AC-3, and 200/h at AC-4. The arcing time runs 10 to 20 ms. Coil inrush peaks at 25 A, steady-state draw is 2 VA at 50 or 60 Hz. The MTBF is listed at 52 years — that's a reliability figure for continuous-duty applications, not a warranty.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
The listed MTBF is 52 years, a reliability figure for continuous-duty applications under rated conditions.
The 3RT2037-1SF30 is a size S2 contactor at 55 mm wide, while the 3RT2015-1BW42 is a smaller-frame S0 contactor. The footprint and terminal layout differ — it will not drop in without panel rework.
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