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Siemens 3RH1131-1KG40-0LA0 — Contactors

Siemens 3RH1131-1KG40-0LA0 SIRIUS Auxiliary Contactor, 3 NO,

MPN3RH1131-1KG40-0LA0

Siemens SIRIUS auxiliary contactor, size S00, 3 NO instantaneous contacts, 125 V rated value, screw and snap-on mounting, IP20 front.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH1131-1KG40-0LA0 — Identification
ParameterValue
Contactor frame sizeS00
3RH1131-1KG40-0LA0 — 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 @ 110 V1 A
Rated value @ 220 V0.27 A
3RH1131-1KG40-0LA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1131-1KG40-0LA0 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1131-1KG40-0LA0 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (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
3RH1131-1KG40-0LA0 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1131-1KG40-0LA0 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1131-1KG40-0LA0 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

Auxiliary contactor for control-circuit switching

It carries a rated value of 125 V and delivers 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — the current drops predictably with voltage, so size the contact for the actual control voltage on your circuit.

Contact ratings and coil draw

The magnet coil draws 11 W on closing and holds at 4 W DC — the holding power is low enough that a 24 VDC supply with modest headroom can keep it sealed continuously. Surge voltage resistance is rated at 6 kV, and a built-in varistor suppresses switching transients across the coil. For typical pilot-duty loads at 24 V and above, mechanical life reaches 30 million operations.

Environmental and mechanical limits

Shock resistance is 10g for 5 ms and 5g for 10 ms, and the mounting position allows +/-180° rotation on a vertical surface plus +/-22.5° forward/backward tilt — useful when panel layout forces an unconventional orientation.

Frequently asked questions

What are the key ratings for 3RH1131-1KG40-0LA0?

It is a size S00 auxiliary contactor with 3 NO instantaneous contacts, rated 125 V. Current ratings are 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V. Coil closing power is 11 W DC, holding power 4 W DC.

Where can I buy 3RH1131-1KG40-0LA0?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quotation.

What compliance documentation does Siemens provide for 3RH1131-1KG40-0LA0?

The part carries a substance prohibition date of 07/01/2006, indicating RoHS compliance. The SIRIUS series typically supports UL, CSA, and CE certifications; verify the specific approvals for your jurisdiction at order time.

MPN
3RH1131-1KG40-0LA0