Skip to main content
Siemens 3RH6122-1AH00 — Contactors

Siemens 3RH6122-1AH00 SIRIUS Contactor Relay, 2NO+2NC, AC Co

MPN3RH6122-1AH00

Siemens SIRIUS 3RH6122-1AH00, contactor relay, size S00, 2 NO + 2 NC auxiliary contacts, AC coil 50/60 Hz, screw and snap-on mounting on 35 mm DIN rail.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RH6122-1AH00 — Identification
ParameterValue
Contactor frame sizeS00
3RH6122-1AH00 — 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
3RH6122-1AH00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz48 V
3RH6122-1AH00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH6122-1AH00 — 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 standard mounting rail
3RH6122-1AH00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH6122-1AH00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH6122-1AH00 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm
3RH6122-1AH00 — Specifications
ParameterValue
At AC10 000 1/h

Product details

It provides 2 normally open and 2 normally closed auxiliary contacts, giving you four independent signal paths for interlocking, status feedback, or logic control. The AC coil is rated for 50/60 Hz with an operating range of 0.8...1.1 x Us at 50 Hz and 0.85...1.1 x Us at 60 Hz, so it holds in over a reasonable brownout band.

Dimensions are 45 mm wide, 57.5 mm tall, and 73 mm deep — fits the S00 slot in a modular panel layout.

The auxiliary contacts are rated for AC-12 duty at 6 A at 24 V, 3 A at 110 V, 1.2 A at 220 V, and 10 A at 230 V. These are not motor-switching currents — this is a contactor relay for signal-level and small auxiliary loads.

Coil and control supply

The coil is AC-operated with a pick-up power of 37 VA and a holding power of 5.7 VA at an inductive power factor of 0.8. That means the inrush is about 6.5x the sealed draw, so your control transformer needs to handle the momentary load when multiple contactors pick up simultaneously.

Substance prohibition date of 05/01/2012 indicates RoHS compliance per the EU directive effective from that date.

Frequently asked questions

What are the key dimensions for panel layout?

Width is 45 mm, height 57.5 mm, depth 73 mm. It snaps onto 35 mm DIN rail.

What contact configuration does it have?

It has 2 normally open and 2 normally closed auxiliary contacts, giving four independent switching channels.

What is the coil voltage and type?

The coil is AC, rated at 48 V at both 50 Hz and 60 Hz. Pick-up power is 37 VA, holding power is 5.7 VA.

What compliance documentation is available?

The part has a substance prohibition date of 05/01/2012, indicating RoHS compliance. Surge voltage resistance is rated at 6 kV.

MPN
3RH6122-1AH00