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Siemens 3RH1140-2AB00 — Contactors

Siemens SIRIUS 3RH1140-2AB00 Auxiliary Contactor, 4 NO, 10 A

MPN3RH1140-2AB00

Siemens SIRIUS auxiliary contactor, 3RH1140-2AB00, Size S00, 4 NO, 10 A AC-12 at 24 V, screw and snap-on mounting.

$22.33Ref. price · indicative, final on quote
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

3RH1140-2AB00 — Identification
ParameterValue
Contactor frame sizeS00
3RH1140-2AB00 — 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
3RH1140-2AB00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz24 V
3RH1140-2AB00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1140-2AB00 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1140-2AB00 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
3RH1140-2AB00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1140-2AB00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1140-2AB00 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

Rated 10 A in AC-12 duty at 24 V, it handles resistive and solid-state loads typical of PLC outputs and relay coils. The contact arrangement is 4 normally-open instantaneous contacts — no delayed, lagging, or make-before-break switching. Size S00 means it fits the compact footprint (45 mm wide, 60 mm tall, 73 mm deep) shared with the SIRIUS 3RT contactor family, so it slots into existing panel layouts without re-spacing.

For inductive loads (contactors, solenoids), derate to the AC-15 values: 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, 1 A at 690 V. The 4 NO contacts are rated for mechanical endurance of 30 million operations — that's the contactor body, not the contacts under load. Electrical life will be lower and depends on the switched current and voltage. Shock rated at 10g / 5 ms and 5g / 10 ms — fine for most industrial panels but not for high-vibration mobile equipment without additional damping.

Front face is IP20 — finger-safe but not washdown. Side clearance is 0 mm to adjacent devices, so it can be ganged without air gaps. Coil operates at 50/60 Hz with a rated control voltage of 24 V; the operating range is 0.8 to 1.1 times rated at 50 Hz and 0.85 to 1.1 times at 60 Hz.

It is the standard auxiliary contactor in the SIRIUS S00 frame, so any replacement would need to match the 4 NO configuration and the 10 A AC-12 rating.

Frequently asked questions

What are the key ratings of the 3RH1140-2AB00?

It is a 4 NO auxiliary contactor rated 10 A AC-12 at 24 V. AC-15 ratings are 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. Coil is 24 V 50/60 Hz. Mechanical life is 30 million operations.

What is the physical size and mounting of the 3RH1140-2AB00?

It is Size S00: 45 mm wide, 60 mm high, 73 mm deep. Mounts via screw or snap-on to a 35 mm DIN rail. Front face is IP20; side clearance is 0 mm.

What wire size does the 3RH1140-2AB00 accept?

It accepts solid or stranded wire from 0.25 to 2.5 mm² per terminal.

Can the 3RH1140-2AB00 replace a 3RT1015-1AG61 in a panel?

No — the 3RT1015-1AG61 is a power contactor with a main pole current rating, not an auxiliary contactor. The 3RH1140-2AB00 is an auxiliary contactor with 4 NO auxiliary contacts only, no main poles. They serve different functions in the circuit.

MPN
3RH1140-2AB00