3RT1075-2AS36 - Siemens
power contactor, AC-3e/AC-3 400 A, 200 kW / 400 V AC (50-60 Hz) / DC Uc: 500-550 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 | S12 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 350 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| 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/DC |
| Rated value @ 50 Hz | 0.9 |
| Rated value @ 50 Hz | 500 ... 550 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: 630 A (690 V, 100 kA) |
| Short-circuit coordination type 2, fuse | gG: 500 A (690 V, 100 kA), aM: 400 A (690 V, 50 kA), BS88: 450 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 | 160 mm |
| Height | 214 mm |
| Depth | 225 mm |
| Parameter | Value |
|---|---|
| At AC | 60 ... 100 ms |
Frequently asked questions
What does the 2AS36 suffix mean on the Siemens 3RT1075 contactor?
Decoding the suffix is the fastest way to confirm coil voltage, terminal type, and auxiliary contacts match the panel design.
What is the difference between AC-3 and AC-3e duty on the 3RT1075-2AS36?
AC-3e ratings affect how the contactor can be applied to modern IE3/IE4 motors and are a common engineering approval question.
Is the 3RT1475 the official replacement or successor for the 3RT1075-2AS36?
Obsolete/LTB sites need a validated cross to avoid downtime and unsupported spares.
What coil voltage range does the 3RT1075-2AS36 500-550V DC UC support?
Wrong coil voltage is the most common field failure; the wide UC range must be verified against the control supply before energizing.
Does the 3RT1075-2AS36 include spring-loaded auxiliary and main circuit terminals?
Spring terminals change wiring time, tooling, and DIN-rail layout versus screw terminations.
Where can I buy the Siemens 3RT1075-2AS36 with stock and price from an authorized distributor?
Buyers need a trusted source with current stock, OEM warranty, and traceable lead time.