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Siemens 3RH1131-1BK80 — Contactors

Siemens SIRIUS 3RH1131-1BK80 Auxiliary Contactor, 4 NO + 0 N

MPN3RH1131-1BK80

Siemens SIRIUS auxiliary contactor, size S00, 3RH1131-1BK80, 4 NO + 0 NC, 52 V DC coil, screw and snap-on mounting, IP20 front.

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

3RH1131-1BK80 — Identification
ParameterValue
Contactor frame sizeS00
3RH1131-1BK80 — 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
3RH1131-1BK80 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1131-1BK80 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1131-1BK80 — 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
3RH1131-1BK80 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1131-1BK80 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1131-1BK80 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

The 52 V DC coil draws 3.2 W on pickup and hold, so the control transformer and rectifier can be sized for that continuous load. That matters when you're squeezing it into a crowded gland-plate area or a swing-frame subpanel.

Switching capacity by voltage — what it actually handles

The contact ratings are given at specific voltages, not a single blanket current. At 24 V rated value it switches 10 A; at 110 V rated value it drops to 1 A; at 230 V rated value it handles 6 A; at 400 V rated value it's 3 A; at 500 V rated value 2 A; at 690 V rated value 1 A. The 220 V rated value figure of 0.27 A is notably lower than the 230 V figure — that's the DC switching curve for that coil voltage band, not a typo. For a 24 VDC pilot circuit, the 10 A rating gives comfortable headroom for a bank of solenoid valves or indicator lamps.

Wiring and integration details

The screw terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². AWG equivalents are 2x (20 to 16), 2x (18 to 14), or 1x 12. That covers most control-circuit wiring from signal-level through motor-circuit interposing. The 72 mm depth, 45 mm width, and 57.5 mm height keep it within the S00 footprint — fits alongside contactors and relays on the same DIN rail without overhang. That's the dry-circuit performance — important when switching PLC inputs or low-energy signals where oxide films on silver contacts can cause intermittent failures.

Environmental and electrical robustness

Shock resistance is 10g at 5 ms and 5g at 10 ms. Pollution degree 3.

Frequently asked questions

What is the closest functional alternative if 3RH1131-1BK80 is not available?

The closest functional peer is the 3RH2122-1BW40, which is a size S00 auxiliary contactor with a different contact configuration (2 NO + 2 NC) and a different coil voltage. It shares the same physical footprint and mounting, so it drops into the same panel location without rewiring the base, but the contact arrangement and coil must match the circuit design.

MPN
3RH1131-1BK80