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Siemens SIRIUS 3RT2344-1AG20 Contactor, Size S3, AC Coil, 10

MPN3RT2344-1AG20

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Siemens SIRIUS contactor, size S3, AC coil, screw-type terminals, 10 A at 24 V, auxiliary switch, current lifecycle stage.

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Siemens 3RT2344-1AG20 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2344-1AG20 — Identification
Parameter	Value
Contactor frame size	S3

3RT2344-1AG20 — Ratings & Performance
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	6 A
Rated value @ 110 V	1 A
Rated value @ 220 V	0.3 A

3RT2344-1AG20 — Control & Coil
Parameter	Value
Control supply voltage type	AC
Rated value @ 50 Hz	0.35
Rated value @ 50 Hz	110 V

3RT2344-1AG20 — Contacts & Poles
Parameter	Value
Main poles	4
Main NO contacts	4
Auxiliary contact reliability	1 faulty switching per 100 million (17 V, 1 mA)

3RT2344-1AG20 — Protection & Coordination
Parameter	Value
Short-circuit coordination type 1, fuse	gG: 250 A (690 V, 100 kA)
Short-circuit coordination type 2, fuse	gR: 250 A (690 V, 100 kA)
Aux. switch short-circuit protection, fuse	gG: 10 A (690 V, 1 kA)

3RT2344-1AG20 — Connection & Mounting
Parameter	Value
Main circuit connection	screw-type terminals
Aux. / control circuit connection	screw-type terminals
Conductor cross-section, solid	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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

3RT2344-1AG20 — Durability
Parameter	Value
Durability (operating cycles, typ.)	10 000 000
Durability with aux. switch block (cycles, typ.)	10 000 000

3RT2344-1AG20 — Environmental
Parameter	Value
Operating temperature range	-25 ... +60 °C
Storage temperature range	-55 ... +80 °C
Installation altitude, max.	2 000 m

3RT2344-1AG20 — Mechanical
Parameter	Value
Width	96 mm
Height	140 mm
Depth	152 mm

3RT2344-1AG20 — Specifications
Parameter	Value
At AC	10 ... 21 ms

Product details

The coil is AC voltage type; the main contact rating spans 10 to 2 (likely poles or current range per the manufacturer's code).

Current ratings across voltages

This contactor carries a 10 A rated current at 24 V AC, 6 A at 60 V and 230 V, 3 A at 400 V, 2 A at 48 V and 500 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 0.1 A at 600 V. The arcing time is 10 to 20 ms; the AC coil operates at 110 V at 50 Hz and 110 V at 60 Hz.

Environmental and mechanical specs

The contactor has a typical mechanical life of 10 million operations. Dimensions: 152 mm deep, 96 mm wide, 140 mm high. The mounting position is flexible for panel integration.