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Siemens 3RT1446-1AC20 — Contactors

Siemens 3RT1446-1AC20 SIRIUS Power Contactor, 24 VAC Coil, S

MPN3RT1446-1AC20

Siemens SIRIUS power contactor, 3RT1446-1AC20, Size S3, 24 VAC 50/60 Hz coil, screw-type terminals, 22 kW at AC-2 400 V.

$188.35Ref. price · indicative, final on quote
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

3RT1446-1AC20 — Identification
ParameterValue
Contactor frame sizeS3
3RT1446-1AC20 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 500 V29.9 kW
Rated value @ 690 V38.2 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1446-1AC20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz24 V
3RT1446-1AC20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1446-1AC20 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 250 A
Short-circuit coordination type 2, fuseFuse gR: 250 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1446-1AC20 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, solid or stranded2x (2.5 ... 16 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 and 75 mm standard mounting rail
Side-by-side mountingYes
3RT1446-1AC20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1446-1AC20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1446-1AC20 — Mechanical
ParameterValue
Width70 mm
Height146 mm
Depth139 mm
3RT1446-1AC20 — Specifications
ParameterValue
At AC10 ... 25 ms

Product details

The key motor ratings are 22 kW at AC-2 duty at 400 V, 29.9 kW at 500 V, and 38.2 kW at 690 V. Auxiliary contact ratings are provided across common control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC. The DC switching capability at 220 V is notably low — 0.3 A — so if you are switching a DC coil or solenoid at that voltage, verify the inrush does not exceed this.

Dimensions are 146 mm high, 70 mm wide, and 139 mm deep. The front has IP20 protection with the cover or box terminal fitted; the terminal body itself is IP00. Wire ranges for the main circuit: solid accepts 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded accepts 2x (10 to 50 mm²). At 40 °C the minimum permissible conductor is 50 mm²; at 60 °C it drops to 35 mm² — derate the wire if the panel runs hot.

RoHS compliance date is noted as May 1, 2012, covering the substance prohibitance deadline.

Frequently asked questions

What is the mounting method and panel footprint?

It mounts on 35 mm or 75 mm DIN rail via screw or snap-on. Dimensions are 146 mm high, 70 mm wide, and 139 mm deep. Side-by-side mounting is allowed.

MPN
3RT1446-1AC20