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Siemens 3RH1122-1BF40-0AA6 — Contactors

Siemens SIRIUS 3RH1122-1BF40-0AA6 Auxiliary Contactor, 110 V

MPN3RH1122-1BF40-0AA6

Siemens SIRIUS auxiliary contactor, 3RH1122-1BF40-0AA6, Size S00, 110 V DC coil, 4 NO + 2 NC instantaneous contacts, screw and snap-on mounting, IP20 front, 72 mm depth.

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

3RH1122-1BF40-0AA6 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BF40-0AA6 — 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
3RH1122-1BF40-0AA6 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BF40-0AA6 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BF40-0AA6 — 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
3RH1122-1BF40-0AA6 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BF40-0AA6 — Environmental
ParameterValue
Installation altitude, max.2 000 m
3RH1122-1BF40-0AA6 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 4 normally open and 2 normally closed instantaneous contacts, all rated for switching at 110 V DC coil voltage. The contacts are rated for 10 A at 24 V, 1 A at 110 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V — so the 110 V DC coil is the one to match, but the contacts can handle a wide range of AC and DC loads up to 690 V.

This auxiliary contactor is Size S00, meaning it occupies a 45 mm wide DIN-rail footprint — typical for control cabinets where space is tight. That flexibility matters when you're squeezing it into a crowded panel next to a main contactor or a terminal block.

Terminals accept solid conductors: 2x 0.5…1.5 mm², 2x 0.75…2.5 mm², or 2x 4 mm², plus the AWG equivalents (2x 20…16, 2x 18…14, 1x 12). Shock resistance is 10g for 5 ms and 5g for 10 ms — enough for most machine-mounted applications but not for high-impact presses without additional isolation.

Frequently asked questions

Who supplies 3RH1122-1BF40-0AA6 and how is it quoted for volume purchases?

This part is sourced through independent industrial distribution channels. Availability and current pricing are confirmed at quote time against an RFQ — we quote to order, not from shelf stock.

Will 3RH1122-1BF40-0AA6 drop into a panel that was specified around 3RH2122-1BP40 without rewiring?

The 3RH1122-1BF40-0AA6 shares the same Size S00 footprint and screw/snap-on DIN-rail mounting as the 3RH2122-1BP40, so the mechanical fit and terminal layout are identical. The key difference is the coil voltage: this one is 110 V DC, while the 3RH2122-1BP40 uses a different coil voltage — verify the control circuit before swapping.

What compliance documentation does this brand provide for 3RH1122-1BF40-0AA6?

The part carries a substance prohibition date of 01.07.2006, consistent with early RoHS compliance. Siemens provides RoHS, REACH, and IEC/EN 60947-5-1 declarations on request through their standard documentation portal.

MPN
3RH1122-1BF40-0AA6