Siemens SIRIUS 3RT2026-2BB44 power contactor, S0 size, 24 V DC coil, spring-type terminals.
| 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 | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 3 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 | 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 | gG: 100 A (690 V, 100 kA), aM: 50 A (690 V, 100 kA), BS88: 100 A (415 V, 80 kA) |
| Short-circuit coordination type 2, fuse | gG: 35A (690V, 100kA), aM: 20A (690V, 100kA), BS88: 35A (415V, 80kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (500 V, 1 kA) |
| Parameter | Value |
|---|---|
| Main circuit connection | spring-loaded terminals |
| Aux. / control circuit connection | spring-loaded terminals |
| Conductor cross-section, solid | 1 ... 10 mm² |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 2.5 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²) |
| Mounting method | screw and snap-on mounting onto 35 mm standard mounting 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 | 45 mm |
| Height | 102 mm |
| Depth | 154 mm |
The Siemens 3RT2026-2BB44 is a SIRIUS S0 power contactor with a 24 V DC coil and spring-type terminals. The S0 frame keeps it at 45 mm wide and 154 mm deep, slotting into a standard 35 mm DIN rail mount.
Minimum clearances around the block: 10 mm up, down, and forward, 6 mm at the sides. The terminal arrangement is for main contacts only; there is no built-in auxiliary switch on this variant.
Width 45 mm, height 102 mm, depth 154 mm. It mounts on a 35 mm DIN rail.
Solid or stranded wire from 1 to 10 mm². Two conductors of 0.5–2.5 mm² can be doubled into the same clamp.
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