Siemens SIRIUS series, coupling contactor, 3RT2046-1KB44-3MA0, S3 frame, 24 V DC coil, 85 A AC-3.
| Parameter | Value |
|---|---|
| Contactor frame size | S3 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 80 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 20 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: 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: 160 A (690 V, 100 kA), aM: 100 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA) |
| 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 | 2.5 ... 16 mm² |
| 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.) | 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 | 70 mm |
| Height | 140 mm |
| Depth | 195 mm |
| Parameter | Value |
|---|---|
| At AC | 16.3g / 5 ms, 10.g / 10 ms |
The Siemens 3RT2046-1KB44-3MA0 is a SIRIUS S3 coupling contactor — the same frame used across the 3RT2 line, sized for motor and resistive switching in control panels. The coil pulls 24 V DC with a 2.7 A inrush peak. Main contacts accept solid conductors from 2.5 to 16 mm² and stranded from 6 to 70 mm². Dimensions are 70 x 140 x 195 mm (WxHxD).
Coil terminals are screw-type. An auxiliary switch is built in. Keep 10 mm clearance to the sides and top, 20 mm forward for arc ventilation.
Solid conductors 2.5 to 16 mm² and stranded conductors 6 to 70 mm².
24 V DC rated, with an inrush peak of 2.7 A and a holding current at nominal of 6 A.
Yes, the contactor is equipped with an auxiliary switch as part of the assembly.
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