Siemens SIRIUS power contactor, 3RT1034-1AN20, S2 frame, screw terminals, 15 kW at 400 V AC-2, 55 mm width, snap-on DIN rail.
| Parameter | Value |
|---|---|
| Contactor frame size | S2 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 29 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 18.5 kW |
| Rated value @ 690 V | 10 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 |
| Rated value @ 50 Hz | 0.8 ... 1.1 |
| Rated value @ 50 Hz | 220 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 | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²) |
| 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 standard mounting 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 | 7 ... 20 ms |
The Siemens 3RT1034-1AN20 is a SIRIUS S2-frame power contactor rated for motor switching in AC-2 duty at 15 kW on a 400 V three-phase line. The same contactor also carries 10 kW at 690 V and 18.5 kW at 500 V, so it fits 480 V and 600 V class panels as well. Front IP20, terminal IP00 — typical for enclosed panel use.
Solid wire range is 2x (0.5 to 4 mm²) maximum. The dual-wire termination per clamp is useful for looping power through to a downstream overload relay without extra terminal blocks.
The 3RT1034-1AN60-1AA0 is a peer variant in the same S2 frame. The key difference is the coil: the -1AN20 uses a standard AC coil (220 V 50 Hz / 220 V 60 Hz), while the -1AN60-1AA0 carries a different coil code. The power ratings, terminal layout, and mounting footprint are identical, so it drops into the same panel without rewiring — just verify coil voltage matches your control circuit.
The depth is 115 mm.
The screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and up to 2x (0.75 to 4 mm²) solid conductors.
As a standard SIRIUS product, Siemens provides a declaration of conformity for IEC/EN 60947-4-1, plus RoHS and REACH compliance statements. The part is designed for global markets; specific UL/CSA file numbers are available on request.
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