Siemens SIRIUS 3RT1026-1AC20 power contactor, size S0, 11 kW at 400 V AC-2, screw terminals, 45 mm width, DIN rail mount.
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| 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 | 24 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 |
| Aux. / control 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, solid or stranded | 2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 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 standard mounting rail according to DIN EN 50022 |
| 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 |
|---|---|
| Installation altitude, max. | 2 000 m |
| Parameter | Value |
|---|---|
| Width | 45 mm |
| Height | 85 mm |
| Depth | 91 mm |
This distinction matters when specifying the branch circuit protection — Type 2 keeps the contactor in service after a fault, which reduces downtime on a production line.
Main circuit terminals accept solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²). Auxiliary and control circuit screw terminals handle 2x (1 to 2.5 mm²) solid or 2x (2.5 to 6 mm²) stranded, max 2x 10 mm².
The motor rating is 11 kW at 400 V in AC-2 duty. It also carries an AC-4 rating of 15.5 A at 400 V for reversing or plugging duty. The coil is rated for 24 V at 50/60 Hz. Ambient operation spans -25 to +60 °C.
Main circuit screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid/stranded. Auxiliary terminals accept 2x (1 to 2.5 mm²) solid, 2x (2.5 to 6 mm²) stranded, or max 2x 10 mm².
Screw and snap-on mounting onto 35 mm standard mounting rail per DIN EN 50022. The S0 frame width is 45 mm, and side-by-side mounting is permitted without derating.
Type 2 coordination requires a 35 A gL/gG fuse upstream. Type 1 coordination allows a 100 A gL/gG fuse.
No related articles