Siemens SIRIUS power contactor, size S2, 3RT5035-1AH00, 38 kW at 400 V, screw terminals, DIN-rail mount.
| Parameter | Value |
|---|---|
| Contactor frame size | S2 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 690 V | 11.4 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 |
| Rated value @ 50 Hz | 0.36 |
| Rated value @ 50 Hz | 48 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 | fuse gL/gG: 125 A |
| Short-circuit coordination type 2, fuse | fuse gL/gG: 63 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, solid or stranded | 2x (0.75 ... 16 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 50022 |
| 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 | 55 mm |
| Height | 112 mm |
| Depth | 115 mm |
| Parameter | Value |
|---|---|
| At AC | 5 000 1/h |
The Siemens SIRIUS 3RT5035-1AH00 is a size S2 power contactor rated for motor switching up to 38 kW at 400 V at 60 °C ambient — that is the AC-3 duty figure that governs real motor loads, not the resistive AC-1 number. At 690 V it carries 11.4 kW, so it fits 400 V and 690 V distribution without derating the motor line.
Main circuit terminals are screw-type, accepting 2x (0.75 to 16 mm²) solid or stranded, or 2x 18–2 AWG. Auxiliary and control circuit terminals are also screw-type.
This part is available to order through independent distribution. Submit an RFQ for current pricing and confirmed lead time; availability is verified at quote time.
At 400 V and 60 °C ambient, the AC-3 motor rating is 38 kW. At 690 V it is 11.4 kW. These are the duty-class figures that govern real motor switching.
Both are size S2 contactors with the same 55 mm width and DIN-rail mounting, so the physical footprint is identical. The 3RT5035-1AH00 carries a higher motor rating (38 kW vs the 3RT5034-1AR60's lower rating), so it is a drop-in replacement if the panel's wiring and thermal capacity support the higher current.
RoHS compliance is confirmed with a substance prohibitance date of 03/01/2017. The insulation voltage is 690 V, pollution degree 3. Standard Siemens documentation includes a CE declaration and UL/CSA file numbers; request these with your RFQ.
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