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Siemens 3RH2344-1DM40 — Contactors

Siemens 3RH2344-1DM40 SIRIUS Auxiliary Contactor, 4 NO, S00

MPN3RH2344-1DM40
Active

Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, 220 V rated insulation voltage, varistor surge suppression, screw and snap-on mounting for 35 mm DIN rail.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH2344-1DM40 — Identification
ParameterValue
Contactor frame sizeS00
3RH2344-1DM40 — 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
3RH2344-1DM40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2344-1DM40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2344-1DM40 — 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
3RH2344-1DM40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
3RH2344-1DM40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2344-1DM40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth117 mm
3RH2344-1DM40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

The 4 NO contacts carry different currents depending on the switching voltage — a key detail for control transformers or PLC input isolation. At 24 V the rated operational current is 10 A; at 60 V it drops to 4.7 A; at 110 V it is 3 A; at 220 V it is 1.2 A; at 230 V it is 6 A; at 400 V it is 3 A; at 440 V it is 0.5 A; at 500 V it is 2 A; at 600 V it is 0.26 A; and at 690 V it is 1 A. These are not all the same curve — the 230 V and 400 V figures are higher than the 220 V and 440 V ones, so verify your actual control voltage against the correct row.

Physical Integration and Wiring

The contactor measures 45 mm wide, 57.5 mm tall, and 117 mm deep — the depth is the dimension that extends into the enclosure, so check your cabinet depth against that 117 mm plus wiring clearance. Terminals accept solid or stranded copper: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². The closing power of the magnet coil at DC is 4 W.

Frequently asked questions

What are the key dimensions of the 3RH2344-1DM40?

Width is 45 mm, height is 57.5 mm, and depth is 117 mm. Clearance to grounded parts: 10 mm upwards, forwards, and downwards; 6 mm at the sides.

What compliance documentation is available for this part?

The part is RoHS compliant with a substance prohibition date of July 1, 2006. It is a Siemens SIRIUS product; standard manufacturer declarations for CE, UKCA, and UL are typically provided with the shipment. The pollution degree is 3 per IEC 60947-1.

Will the 3RH2344-1DM40 fit a panel designed for the 3RH2422-1AB00?

Not without checking the mounting footprint and contact count. The 3RH2344-1DM40 is size S00; the 3RH2422-1AB00 is a different frame. Both snap onto 35 mm DIN rail, but the terminal layout and depth may differ. Compare the dimensional drawings before committing.

MPN
3RH2344-1DM40