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Siemens 3RH2440-1AU00 SIRIUS Auxiliary Contactor, 4 NO, S00

MPN3RH2440-1AU00

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Siemens SIRIUS 3RH2440-1AU00 auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting on 35 mm DIN rail, 57.5 x 90 x 73 mm (HxWxD).

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Siemens 3RH2440-1AU00 datasheet (PDF)

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

Specifications

3RH2440-1AU00 — Identification
Parameter	Value
Contactor frame size	S00

3RH2440-1AU00 — 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	10 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

3RH2440-1AU00 — Control & Coil
Parameter	Value
Control supply voltage type	AC
Rated value @ 50 Hz	0.8 ... 1.1
Rated value @ 50 Hz	240 V

3RH2440-1AU00 — Contacts & Poles
Parameter	Value
Auxiliary contact reliability	1 faulty switching per 100 million (17 V, 1 mA)

3RH2440-1AU00 — Connection & Mounting
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

3RH2440-1AU00 — Durability
Parameter	Value
Durability (operating cycles, typ.)	5 000 000
Durability with aux. switch block (cycles, typ.)	5 000 000

3RH2440-1AU00 — Environmental
Parameter	Value
Operating temperature range	-25 ... +60 °C
Storage temperature range	-55 ... +80 °C
Installation altitude, max.	2 000 m

3RH2440-1AU00 — Mechanical
Parameter	Value
Width	90 mm
Height	57.5 mm
Depth	73 mm

3RH2440-1AU00 — Specifications
Parameter	Value
At AC	4 ... 15 ms

Product details

S00 frame, 4 NO contacts, DIN-rail snap-on

The 3RH2440-1AU00 is a SIRIUS auxiliary contactor in the S00 frame size — four normally-open instantaneous contacts, no auxiliary contacts built in. Dimensions are 57.5 mm high, 90 mm wide, 73 mm deep — it occupies a single 90 mm-wide module on the rail, with 6 mm clearance needed at the side and 10 mm above/below for arc ventilation and wiring access.

Frequently asked questions

What compliance documentation does Siemens provide for 3RH2440-1AU00?

The part carries a RoHS compliance date of 10/01/2009 and is rated for degree of pollution 3 per IEC 60947-1. Full CE, UKCA, and UL file documentation is available from Siemens on request.