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Siemens 3RH1344-1AN20-0KA0 — Contactors

Siemens 3RH1344-1AN20-0KA0 SIRIUS Auxiliary Contactor, 4 NO,

MPN3RH1344-1AN20-0KA0

Siemens SIRIUS 3RH1344-1AN20-0KA0 auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front, rated 10 A at 24 V.

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

3RH1344-1AN20-0KA0 — Identification
ParameterValue
Contactor frame sizeS00
3RH1344-1AN20-0KA0 — 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
3RH1344-1AN20-0KA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz220 V
3RH1344-1AN20-0KA0 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1344-1AN20-0KA0 — 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
3RH1344-1AN20-0KA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
3RH1344-1AN20-0KA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1344-1AN20-0KA0 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth111 mm

Product details

It carries four normally-open instantaneous contacts, meaning all four close the instant the coil pulls in, with no intentional delay. The S00 frame size keeps the footprint tight at 45 mm wide, so it fits into crowded DIN-rail panels without chewing up gland-plate real estate. Mounting is screw-fixed or snap-on onto a DIN rail, and the enclosure front is IP20.

For AC loads, the contactor is rated at 6 A at 230 V and 3 A at 400 V, which covers most 50/60 Hz pilot circuits. The solid wire capacity is 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² — that's the range for the screw terminals. The 4 mm² option lets you daisy-chain two larger wires per terminal, which is useful when looping the control supply through multiple contactors in a row.

RoHS compliance is documented with a substance prohibition date of 07/01/2006, covering the EU RoHS directive.

That means it fits in panels where the rail is oriented oddly or where clearance forces a tilt. Shock resistance is 10g at 5 ms and 5g at 10 ms — enough for most industrial machinery but not for extreme vibration environments like a crusher or shaker table. The depth is 111 mm, height 57.5 mm, width 45 mm.

Frequently asked questions

What is the depth of this contactor?

The depth is 111 mm. That's the dimension from the DIN-rail mounting surface to the front of the housing, including the terminals.

What wire sizes does the terminal accept?

The screw terminals accept solid wire in these combinations: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². That covers standard control wiring from signal-level to power-distribution runs.

Will this drop into a panel specified around 3RH2422-1AB00 without rewiring?

Not without checking the contact arrangement. The 3RH2422-1AB00 typically has a mix of NO and NC contacts, while this part has four NO contacts. If your circuit needs normally-closed contacts, you would need to add an external interposing relay or select a different variant. The physical footprint (S00, 45 mm wide) and mounting are the same, so the mechanical swap is straightforward — the electrical difference is the deciding factor.

MPN
3RH1344-1AN20-0KA0