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Siemens 3RH2140-1AF00 — Contactors

Siemens 3RH2140-1AF00 SIRIUS Auxiliary Contactor, 45 mm

MPN3RH2140-1AF00
Active

Siemens SIRIUS 3RH2140-1AF00 auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on 35 mm DIN rail mounting, 45 x 57.5 x 73 mm (W x H x D).

$113.66Ref. price · indicative, final on quote
Siemens 3RH2140-1AF00 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RH2140-1AF00 — Identification
ParameterValue
Contactor frame sizeS00
3RH2140-1AF00 — 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 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V4.7 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A
3RH2140-1AF00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz110 V
3RH2140-1AF00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2140-1AF00 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (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 onto 35 mm DIN rail
3RH2140-1AF00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2140-1AF00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2140-1AF00 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm
3RH2140-1AF00 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

Switching capacity across voltages

The 3RH2140-1AF00: Four normally-open instantaneous contacts (4 NO) — no NC on this variant, so if you need a break contact in the auxiliary stack, this isn't the one.

Environmental limits and endurance

Mechanical endurance is 30,000,000 operations typical — this is the life of the contactor mechanism, not the electrical contact life under load. Electrical life depends on the switched current and voltage. Relative humidity minimum 10 %; RoHS compliance date substance prohibition 10/01/2009.

Frequently asked questions

What is the difference between 3RH2140-1AF00 and 3RH2131-1AH00?

The 3RH2131-1AH00 is a different contact configuration — it has 2 NO + 2 NC contacts, while the 3RH2140-1AF00 has 4 NO contacts only. Both are S00 frame auxiliary contactors with the same 45 mm width and DIN rail mounting. If your circuit needs break contacts, the 3RH2131-1AH00 is the correct variant.

What compliance documentation does Siemens provide for 3RH2140-1AF00?

The part carries a RoHS compliance date of 10/01/2009 and a pollution degree 3 rating per IEC 60947-1. Siemens typically provides CE, UKCA, and cULus certification for the SIRIUS contactor family; the specific approvals are listed on the product certificate.

MPN
3RH2140-1AF00