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Siemens 3RH1140-2AF00 — Contactors

Siemens 3RH1140-2AF00 SIRIUS Auxiliary Contactor, 4 NO, 10A

MPN3RH1140-2AF00

Siemens SIRIUS 3RH1140-2AF00 auxiliary contactor, Size S00, 4 NO instantaneous contacts, 10 A AC-12 rated, screw and snap-on mounting.

$108.01Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RH1140-2AF00 — Identification
ParameterValue
Contactor frame sizeS00
3RH1140-2AF00 — Ratings & Performance
ParameterValue
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 @ 110 V1 A
Rated value @ 220 V0.27 A
3RH1140-2AF00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz110 V
3RH1140-2AF00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1140-2AF00 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1140-2AF00 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
3RH1140-2AF00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1140-2AF00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1140-2AF00 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

It is designed for control-circuit switching, not motor loads — think signal isolation, PLC input extension, or interposing relay duty in a panel. Its headline rating is 10 A at AC-12, which covers resistive and solid-state loads common in control circuits. At 24 V it carries 10 A; at 230 V it drops to 6 A; at 400 V it's 3 A. Mechanical endurance is spec'd at 30 million operating cycles, which is typical for a control-circuit device in a high-duty-cycle line.

Mounts via screw or snap-on to DIN rail. The 45 mm width (3 module spaces) fits standard enclosure rail — no oddball footprint. That means it fits in a crowded gland plate or a tight sub-panel without forcing a re-layout. That's the standard range for control wiring — no need for special ferrules or oversized terminals. Front-side IP20 means it's touch-safe once installed, but it's not sealed against washdown; keep it inside the enclosure.

Frequently asked questions

What are the key ratings I need to check for fit?

The headline rating is 10 A at AC-12 for control circuits. At 24 V it carries 10 A; at 230 V it's 6 A; at 400 V it's 3 A. The contact configuration is 4 normally open instantaneous contacts. Mechanical endurance is 30 million cycles.

What is the physical size and mounting?

Width is 45 mm (3 module spaces), height 60 mm, depth 73 mm. It mounts via screw or snap-on to DIN rail. Mounting position is flexible: +/-180° rotation and +/-22.5° tilt on a vertical surface.

What wire sizes does it accept?

It accepts solid or ferruled stranded conductors from 0.25 to 2.5 mm².

MPN
3RH1140-2AF00