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Siemens 3RH1122-1BB40-0TK1 — Contactors

Siemens 3RH1122-1BB40-0TK1 SIRIUS Auxiliary Contactor, 24 V

MPN3RH1122-1BB40-0TK1

Siemens SIRIUS auxiliary contactor, 24 V DC coil, 2 NO instantaneous contacts, 10 A AC-12 rated, S00 size, 45 x 57.5 x 72 mm, screw and snap-on mounting.

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

3RH1122-1BB40-0TK1 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BB40-0TK1 — 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
3RH1122-1BB40-0TK1 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BB40-0TK1 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BB40-0TK1 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1122-1BB40-0TK1 — 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)
3RH1122-1BB40-0TK1 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BB40-0TK1 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1122-1BB40-0TK1 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

The 24 V DC coil pulls 3.2 W on close and holds at 3.2 W, so the control transformer or DC supply needs to deliver that continuously — no spike to design around. Two normally-open instantaneous contacts handle the switching; there are no delayed, leading, or lagging contacts on this variant. Rated 10 A at AC-12 (resistive) and 10 A at 24 V, it's a straightforward signal relay for PLC outputs, pilot lights, or contactor coils downstream.

Mounting and wiring in the panel

Mounts via screw or snap-on to DIN rail — the 45 mm width takes one standard slot. Wire termination accepts 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid — covers most control wiring from signal loops to motor-circuit interlock runs. Depth of 72 mm keeps it clear of shallow enclosures; height of 57.5 mm stacks neatly with S00 contactors like the 3RT10 series.

The AC-12 rating of 10 A is the resistive load limit — use that for contactor coils, solenoids, or indicator lamps. For inductive AC loads at higher voltages, the switching capacity drops: 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, 1 A at 690 V. On DC, it's 10 A at 24 V, 1 A at 110 V, and 0.27 A at 220 V — the DC arc extinguishes harder, so stay within those curves. Shock resistance tested at 10g / 5 ms and 5g / 10 ms — fine for conveyor and machine-tool vibration.

Frequently asked questions

What is the depth of 3RH1122-1BB40-0TK1?

72 mm depth, with a width of 45 mm and height of 57.5 mm — fits standard S00 contactor footprint on DIN rail.

What wire sizes does 3RH1122-1BB40-0TK1 accept?

Solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² per terminal.

Will 3RH1122-1BB40-0TK1 drop into a panel designed for 3RT1015-1BB42?

Yes, both are S00 size with the same 45 mm width and screw/snap-on mounting — the auxiliary contactor shares the footprint and wiring space of the 3RT10 contactor series.

Where can I buy 3RH1122-1BB40-0TK1 and how is it quoted?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

MPN
3RH1122-1BB40-0TK1