Rated at 11 kW at 400 V in AC-2 duty (slip-ring motors, moderate overloads) and 15.5 A in AC-4 duty (plugging, inching, reversing). These are the numbers that govern real motor switching — not a generic thermal current. For short-circuit protection, the contactor coordinates with a 35 A gL/gG fuse under Type 2 coordination (limited damage to the contactor) or a 100 A gL/gG fuse under Type 1 coordination (contactor may need replacement after a fault). The auxiliary contact block (not included) can be mounted on the front or side; side-by-side mounting is permitted with 6 mm spacing to adjacent devices.
Siemens 3RT1026-3AU60 SIRIUS Power Contactor, S0, 3NO, 11 kW
MPN3RT1026-3AU60
Siemens SIRIUS 3RT1026-3AU60 power contactor, size S0, 3-pole normally open main contacts, screw-type terminals, 11 kW at 400 V AC-2, 15.5 A AC-4.
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
| Parameter | Value |
|---|---|
| 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 |
| 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 |
| Conductor cross-section, solid | 2x (0.25 ... 2.5 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.25 ... 1.5 mm²) |
| 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 |
| Parameter | Value |
|---|---|
| Width | 45 mm |
| Height | 85 mm |
| Depth | 90 mm |
Product details
Frequently asked questions
What are the main contact ratings for motor loads?
It is rated 11 kW at 400 V AC-2 and 15.5 A at 400 V AC-4. These duty-specific ratings define its capability for different motor starting regimes.
What is the physical size and mounting?
The contactor is size S0, 45 mm wide, 85 mm high, 90 mm deep. It snaps onto a 35 mm DIN rail per DIN EN 50022 or can be screw-mounted.
What terminal type does it use?
Screw-type terminals on the main current circuit, accepting 2x (0.25...2.5 mm²) solid, 2x (1...2.5 mm²) stranded, or up to 2x 10 mm² / 1x 8 AWG.
MPN
3RT1026-3AU60