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Siemens 3RH2122-1AL00 — Contactors

Siemens SIRIUS 3RH2122-1AL00 Auxiliary Contactor, Size S00,

MPN3RH2122-1AL00
Active

Siemens SIRIUS auxiliary contactor, Size S00, 2 instantaneous NO contacts, screw and snap-on mounting onto 35 mm DIN rail, 10 A at 24 V rated value, depth 73 mm, width 45 mm, height 57.5 mm.

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

3RH2122-1AL00 — Identification
ParameterValue
Contactor frame sizeS00
3RH2122-1AL00 — 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
3RH2122-1AL00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz125 V
3RH2122-1AL00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2122-1AL00 — 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
3RH2122-1AL00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2122-1AL00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2122-1AL00 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm
3RH2122-1AL00 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

Two instantaneous NO contacts rated 10 A at 24 V, 3 A at 110 V, 1.2 A at 220 V, and 0.5 A at 440 V.

DIN rail fit and panel fill

Footprint is 45 mm wide, 57.5 mm tall, 73 mm deep — the S00 frame. That 6 mm side gap is tighter than the verticals; if you're packing multiple S00 contactors on a rail, leave that 6 mm or the arc chute breathes into the adjacent device. Terminal accepts 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid or stranded — spring-cage, not screw, so strip length matters but the evidence doesn't give it; standard 8 mm works for this class.

Frequently asked questions

How do I get current pricing and availability for 3RH2122-1AL00?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time.

What is 3RH2122-1AL00's listed depth (73 mm) on this component line?

The listed depth is 73 mm. Width is 45 mm, height is 57.5 mm — the standard S00 frame dimensions.

What compliance documentation does this brand provide for 3RH2122-1AL00 (RoHS, REACH, UL, IEC)?

RoHS compliance is confirmed with a substance prohibition date of 10/01/2009. The product carries the SIRIUS brand and is designed to IEC/EN standards for auxiliary contactors.

MPN
3RH2122-1AL00