Siemens SIRIUS auxiliary contactor, 3RH2353-1DB40-0KA0, size S00, 5 NO contacts, 24 VDC coil with varistor, screw and snap-on mounting on 35 mm DIN rail.
| Parameter | Value |
|---|---|
| Contactor frame size | S00 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 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 | 4.7 A |
| Rated value @ 110 V | 3 A |
| Rated value @ 220 V | 1.2 A |
| Parameter | Value |
|---|---|
| Control supply voltage type | DC |
| Parameter | Value |
|---|---|
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Parameter | Value |
|---|---|
| Conductor cross-section, solid or stranded | 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 onto 35 mm DIN rail |
| Parameter | Value |
|---|---|
| Durability (operating 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 | 57.5 mm |
| Depth | 121 mm |
| Parameter | Value |
|---|---|
| At AC | 10 000 1/h |
The 24 VDC coil draws 4 W closing power and includes an integrated varistor surge suppressor. Rated operational current is 10 A at 24 V, 6 A at 230 V, and 1 A at 690 V — the ratings drop as voltage climbs, so match the contact rating to your control voltage, not the coil voltage.
Both are S00-size Siemens auxiliary contactors with the same DIN-rail footprint, so mechanical fit is identical. The 3RH2353-1DB40-0KA0 carries five NO contacts versus the 3RH2122-1BA40's contact arrangement — verify your control circuit's NO/NC count and coil voltage before swapping.
The part is RoHS-compliant per the July 1, 2006 date. No UL, CSA, or IEC certification numbers are listed in the record — request the manufacturer's declaration if your project requires those marks.
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