Siemens SIRIUS 3RT6026-1KB40 coupling contactor, size S0, 45 mm width, 24 VDC coil, screw-type terminals, varistor surge suppression, current production.
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 10 A |
| Rated value @ 24 V | 6 A |
| Rated value @ 110 V | 1 A |
| Rated value @ 220 V | 0.3 A |
| Parameter | Value |
|---|---|
| Control supply voltage type | DC |
| 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 | gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 100 A |
| Short-circuit coordination type 2, fuse | gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 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 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 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 |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
| Parameter | Value |
|---|---|
| Width | 45 mm |
| Height | 85 mm |
| Depth | 151 mm |
The Siemens 3RT6026-1KB40 is a SIRIUS coupling contactor in size S0, designed for switching auxiliary and control circuits where galvanic isolation or signal routing is needed rather than main motor loads. The 24 VDC coil draws 6 A at rated value, so check your control transformer sizing — that's a healthy inrush for a 24 VDC bus.
Depth is 151 mm, which is standard for the S0 frame; verify gland plate clearance if your enclosure is shallow.
Width is 45 mm, height is 85 mm, depth is 151 mm. This is the standard S0 frame size for Siemens SIRIUS contactors.
Yes, the design of the surge suppressor is with varistor, integrated into the unit across the coil terminals.
The part carries a RoHS compliance date of May 1, 2012. Standard Siemens documentation for CE, UL, and CSA is typically available through the manufacturer's support portal.
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