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Siemens 3RH2344-1AK20-0KA0 — Contactors

Siemens SIRIUS 3RH2344-1AK20-0KA0 Auxiliary Contactor, 10 A

MPN3RH2344-1AK20-0KA0
Active

Siemens SIRIUS auxiliary contactor, size S00, 3RH2344-1AK20-0KA0, 10 A at 24 V, screw and snap-on mounting on 35 mm standard mounting rail.

$30.48Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RH2344-1AK20-0KA0 — Identification
ParameterValue
Contactor frame sizeS00
3RH2344-1AK20-0KA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V4.7 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A
3RH2344-1AK20-0KA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz120 V
3RH2344-1AK20-0KA0 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2344-1AK20-0KA0 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail
3RH2344-1AK20-0KA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
3RH2344-1AK20-0KA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2344-1AK20-0KA0 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth117 mm
3RH2344-1AK20-0KA0 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

The 4 normally-open instantaneous contacts provide the switching capacity for multi-circuit control schemes, common in motor starter assemblies and safety circuits.

Integration Details

The S00 frame size keeps the footprint compact at 45 mm wide, 57.5 mm high, and 117 mm deep. The screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid or stranded wire, covering most control wiring gauges. Rated for pollution degree 3, it suits industrial environments with conductive or dry non-conductive pollution. Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C, with relative humidity minimum of 10%.

Frequently asked questions

What are the key ratings for this auxiliary contactor?

It is rated 10 A at 24 V, with 4 NO instantaneous contacts. The contactor is size S00, fits a 35 mm DIN rail, and measures 45 mm wide by 57.5 mm high by 117 mm deep.

What compliance documentation is available for this part?

The part carries a substance prohibitance date of 10/01/2009, indicating RoHS compliance. As a Siemens SIRIUS product, it typically includes CE, UL, and CSA certifications, though specific approval marks should be verified on the nameplate or declaration.

MPN
3RH2344-1AK20-0KA0