Siemens SIRIUS power contactor, size S6, 3RT5055-6NF36, 150 A AC-3e at 690 V, 60 kW at 230 V, screw terminals, active production.
| Parameter | Value |
|---|---|
| Contactor frame size | S6 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 690 V | 55 kW |
| Rated value @ 230 V | 6 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 | AC/DC |
| Rated value @ 50 Hz | 0.8 |
| Rated value @ 50 Hz | 96 ... 127 V |
| Parameter | Value |
|---|---|
| Main poles | 3 |
| Main NO contacts | 3 |
| Parameter | Value |
|---|---|
| Short-circuit coordination type 1, fuse | fuse gL/gG: 355 A |
| Short-circuit coordination type 2, fuse | fuse gL/gG: 315 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, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Mounting method | screw fixing |
| 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 | 120 mm |
| Height | 172 mm |
| Depth | 170 mm |
| Parameter | Value |
|---|---|
| At AC | 2 000 1/h |
Its AC-3e rating of 150 A at 690 V tells you it can handle a 55 kW motor at that voltage without welding the contacts, and at 230 V it's good for 60 kW — that's the sort of headroom a compressor or a big conveyor motor needs. The insulation voltage is rated 1000 V, so it's comfortable in 690 V line-fed panels.
This contactor is screw-fixed to the panel backplate — no DIN rail snap-on here, so plan for a drill and tap.
This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ and we'll get you a firm number.
The depth is 170 mm, with a width of 120 mm and height of 172 mm, so it fits a standard S6 contactor footprint.
Both are size S6 SIRIUS contactors with the same mounting pattern (screw fixing, same dimensions), so the mechanical swap is straightforward. The coil voltage differs — this one is 96–127 V AC 50/60 Hz — so verify your control voltage matches before you pull the old one.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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