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Siemens 3RH6122-1AB00 — Contactors

Siemens 3RH6122-1AB00 SIRIUS Contactor Relay, 2NO+2NC

MPN3RH6122-1AB00

Siemens SIRIUS 3RH6122-1AB00 contactor relay, size S00, 2 NO + 2 NC auxiliary contacts, AC 24 V 50/60 Hz coil, 6 A rated operational current, 45 mm width, screw and snap-on 35 mm DIN rail mounting.

Siemens 3RH6122-1AB00 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RH6122-1AB00 — Identification
ParameterValue
Contactor frame sizeS00
3RH6122-1AB00 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.6 A
Rated value @ 400 V3 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V6 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A
3RH6122-1AB00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz24 V
3RH6122-1AB00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH6122-1AB00 — 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
3RH6122-1AB00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH6122-1AB00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH6122-1AB00 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm
3RH6122-1AB00 — Specifications
ParameterValue
At AC10 000 1/h

Product details

The 3RH6122-1AB00 is a SIRIUS contactor relay in size S00 — the smallest frame in the Siemens SIRIUS family, designed for auxiliary switching and control circuits rather than main motor loads. The AC coil draws 37 VA inrush and 5.7 VA holding at 24 V, 50/60 Hz — the holding power is low enough that a standard 24 V control transformer can drive several of these relays without exceeding its VA budget.

Mounting flexibility and environmental limits

The mechanical service life of 30 million operations typical means the relay outlasts the machine it controls in most cyclic applications. For AWG, it takes 2x 20-16 or 2x 18-14, or 2x 12 AWG.

Lifecycle and sourcing — active production, quoted to order

Sourced through independent distribution channels, this part is quoted to order against the BOM quantity.

Frequently asked questions

What is the 3RH6122-1AB00 used for?

It is a contactor relay — an auxiliary switching device that routes control signals to main contactors, PLC outputs, or indicator lamps. The 2 NO + 2 NC contact configuration handles interlocking, feedback, and status signaling in motor control centers and distribution panels.

What compliance documentation does Siemens provide for 3RH6122-1AB00?

The part carries RoHS compliance dated 10/01/2009 per EU Directive 2011/65/EU. Surge voltage resistance is rated 6 kV, meeting IEC 60947-1 insulation coordination requirements for industrial control gear.

MPN
3RH6122-1AB00