Rated for AC-3 switching duty at up to 1 000 operating cycles per hour, this contactor handles frequent motor start/stop sequences typical of conveyors, pumps, and fans. The screw-type terminals on the magnet coil accept solid or stranded copper from 1 to 10 mm², which covers most panel wiring up to 6 AWG — no special crimp tools needed for field termination. The 45 mm width (size S0) fits tightly on a DIN rail; allow 6 mm clearance at the side and 10 mm above/below for airflow and tool access. Ambient temperature range during operation is -25 to +60 °C, so it can sit in a non-climate-controlled cabinet near a hot process line without derating.
Siemens 3RT2023-1AF04 SIRIUS Power Contactor, Size S0, 45 mm
MPN3RT2023-1AF04
Active
Siemens SIRIUS 3RT2023-1AF04 power contactor, size S0, 45 mm width, screw-type terminals, current production.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 8.5 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 1 hp |
| Rated value @ 24 V | 6 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 | 0.25 |
| Rated value @ 50 Hz | 110 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: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA) |
| Short-circuit coordination type 2, fuse | gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (500 V, 1 kA) |
| Parameter | Value |
|---|---|
| Main circuit connection | screw-type terminals |
| Aux. / control circuit connection | screw-type terminals |
| Conductor cross-section, solid | 1 ... 10 mm² |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 60715 |
| 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 | 45 mm |
| Height | 85 mm |
| Depth | 141 mm |
| Parameter | Value |
|---|---|
| At AC | 4 ... 16 ms |
Product details
Frequently asked questions
What is the closest functional second-source for the 3RT2023-1AF04?
The 3RT2025-1AP04-ZX95 is a close functional peer in the same SIRIUS family, but it is a larger frame size (S2 vs S0) and carries different coil and auxiliary configurations. It will not drop into a panel wired for the S0 footprint without rewiring the DIN rail and terminal layout.
What is the depth of the 3RT2023-1AF04?
The depth is 141 mm, which is the dimension from the DIN rail mounting surface to the front of the contactor.
What wire sizes does the 3RT2023-1AF04 accept?
The main terminals accept solid or stranded copper from 1 to 10 mm², covering typical panel wiring up to about 6 AWG.
What compliance documentation is available for the 3RT2023-1AF04?
As a Siemens SIRIUS product, it typically carries CE, UL, CSA, and RoHS compliance documentation. Specific certificates should be verified against the manufacturer's declaration at the time of ordering.
MPN
3RT2023-1AF04