Siemens SIRIUS 3RT1026-1AL24-3MA0 power contactor, size S0, 11 kW at 500 V AC-3, 15.5 A AC-4, screw terminals, DIN rail mount.
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-4 @ 400 V | 15.5 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 11 kW |
| Rated value @ 690 V | 11 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 |
| Rated value @ 50 Hz | 0.8 ... 1.1 |
| 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 | fuse gL/gG: 100 A |
| Short-circuit coordination type 2, fuse | fuse gL/gG: 35 A |
| Aux. switch short-circuit protection, fuse | fuse gL/gG: 10 A |
| Parameter | Value |
|---|---|
| Main circuit connection | screw-type terminals |
| Conductor cross-section, solid | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| 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 |
| Parameter | Value |
|---|---|
| Width | 45 mm |
| Height | 85 mm |
| Depth | 140 mm |
The S0 footprint is 45 mm wide by 85 mm tall by 140 mm deep — a common size that fits alongside other SIRIUS components on the same rail.
Main current circuit uses screw-type terminals accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x 4 mm² solid — or AWG equivalents 2x (16 to 12), 2x (14 to 10), or 1x 8. For type 1 coordination (welding allowed), use gL/gG 100 A.
It is rated 11 kW at 500 V AC-3 for standard motor starting, 11 kW at 400 V AC-2 for slip-ring motors, and 15.5 A at 400 V AC-4 for high-inrush reversing duty.
For type 2 coordination (no weld), use a gL/gG 35 A fuse upstream. For type 1 coordination, a gL/gG 100 A fuse is permitted.
Yes, side-by-side mounting is allowed without derating up to 60 °C ambient, which simplifies panel layout.
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