3RT1056-2AR36 - Siemens
power contactor, AC-3e/AC-3 185 A, 90 kW / 400 V AC (50-60 Hz) / DC Uc: 440-480 V 3-pole, auxiliary contacts 2 NO + 2 NC drive: conventional main circuit: busbar control and auxiliary circuit: spring-loaded terminal
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S6 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 160 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 30 hp |
| 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/DC |
| Rated value @ 50 Hz | 0.8 |
| Rated value @ 50 Hz | 440 ... 480 V |
| 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: 355 A (690 V, 100 kA) |
| Short-circuit coordination type 2, fuse | gG: 315 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 315 A (415 V, 50 kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (500 V, 1 kA) |
| Parameter | Value |
|---|---|
| Main circuit connection | Connection bar |
| Aux. / control circuit connection | spring-loaded terminals |
| Conductor cross-section, solid | 2x (0.25 ... 2.5 mm²) |
| Conductor cross-section, solid or stranded | 2x (0,25 ... 2,5 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.25 ... 1.5 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 | 40 ... 60 ms |
Frequently asked questions
What does 3RT1056-2AR36 mean in Siemens Sirius contactor naming?
Decoding the order suffix proves the buyer has the exact coil voltage and aux contact variant before purchase.
What coil voltage is used on Siemens 3RT1056-2AR36?
Coil mismatch is the #1 wrong-part returns reason; confirming 440-480 V AC/DC upfront prevents outages.
What are the specifications of the Siemens 3RT1056-2AR36 contactor?
AC-3e 185 A / 90 kW rating and 3-pole 2 NO + 2 NC aux contacts define panel sizing and wiring layout.
What is the difference between 3RT1056-2AR36 and 3RT1056-2AF36?
Variant suffix differentiates coil voltages - picking the wrong one causes coil burnout and downtime.
What is the replacement or equivalent for Siemens 3RT1056-2AR36?
Equivalents enable sourcing when stock is out or for lifecycle planning on legacy panels.
Where can I buy 3RT1056-2AR36 with current stock and price?
Verified authorized-channel stock with lead time is the decisive step before release of PO.