The AC-12 operational current is rated at 10 A maximum — that's the resistive-load switching capacity at line voltage, so it handles pilot-duty loads like contactor coils, relays, and indicator lamps up to that current. At 24 VDC the contact rating is also 10 A, which covers most PLC output and DC control circuits. For 110 VAC the rating drops to 1 A, and at 220 VAC it's 0.27 A — the DC and higher-voltage derating is typical for silver-alloy contacts; if you're switching inductive DC loads below 24 V, verify the make/break current against the published curve.
Siemens SIRIUS 3RH1431-1AF00 Auxiliary Contactor, 3 NO + 1 N
MPN3RH1431-1AF00
Siemens SIRIUS auxiliary contactor, size S00, 3 NO + 1 NC, screw terminals, 10 A AC-12, 24 VDC rated 10 A, 72 mm depth, 90 mm width, 57.5 mm height.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S00 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated value @ 24 V | 10 A |
| Rated value @ 110 V | 1 A |
| Rated value @ 220 V | 0.27 A |
| Parameter | Value |
|---|---|
| Control supply voltage type | AC |
| Rated value @ 50 Hz | 0.8 ... 1.1 |
| Rated value @ 50 Hz | 110 V |
| Parameter | Value |
|---|---|
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Parameter | Value |
|---|---|
| Aux. switch short-circuit protection, fuse | fuse gL/gG: 10 A |
| Parameter | Value |
|---|---|
| Aux. / control circuit connection | screw-type terminals |
| Conductor cross-section, solid | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 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 |
| Parameter | Value |
|---|---|
| Durability (operating cycles, typ.) | 5 000 000 |
| Durability with aux. switch block (cycles, typ.) | 5 000 000 |
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
| Parameter | Value |
|---|---|
| Width | 90 mm |
| Height | 57.5 mm |
| Depth | 72 mm |
Product details
Frequently asked questions
What is the depth of 3RH1431-1AF00?
The depth is 72 mm.
What wire sizes does the screw terminal accept?
The solid conductor capacity is 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), and 2x 4 mm².
MPN
3RH1431-1AF00