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Siemens 3RT1446-3XX40-0LA2 — Contactors

Siemens 3RT1446-3XX40-0LA2 SIRIUS Power Contactor, Size S3,

MPN3RT1446-3XX40-0LA2

Siemens SIRIUS, Size S3 power contactor, 3RT1446-3XX40-0LA2, 29.9 kW at 500 V AC-3, screw-type main terminals, varistor surge suppression, screw and snap-on mounting onto 35 mm and 75 mm rail.

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

3RT1446-3XX40-0LA2 — Identification
ParameterValue
Contactor frame sizeS3
3RT1446-3XX40-0LA2 — 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
3RT1446-3XX40-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1446-3XX40-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT1446-3XX40-0LA2 — 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
3RT1446-3XX40-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (2.5 ... 16 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm and 75 mm standard mounting rail
Side-by-side mountingYes
3RT1446-3XX40-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1446-3XX40-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1446-3XX40-0LA2 — Mechanical
ParameterValue
Width93 mm
Height145 mm
Depth191 mm

Product details

It carries 29.9 kW at 500 V and 38.2 kW at 690 V in AC-3 duty, so it handles the common 400 V to 690 V motor loads you see on pump, fan, and conveyor circuits. Main circuit connections are screw-type terminals sized for solid or stranded wire up to 50 mm² at the AC-1 maximum rating, with the control circuit accepting 2x (0.25... 2.5 mm²) solid.

DC switching and arc performance

For DC loads the contactor is rated at 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — a useful curve for switching DC control circuits or small DC motors in the same panel.

Mounting and wiring clearances

Side-by-side mounting is permitted, which saves rail space when grouping multiple contactors. Main terminals accept 2x (10... 50 mm²) stranded or 2x (2.5... 16 mm²) solid/stranded, with AWG equivalents of 2x (10... 1/0). Control terminals take 2x (0.25... 2.5 mm²) solid.

Frequently asked questions

Where can I buy 3RT1446-3XX40-0LA2 and get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.

What are the key motor power ratings for this contactor?

It is rated 29.9 kW at 500 V and 38.2 kW at 690 V in AC-3 duty, which covers the majority of 400 V to 690 V three-phase motor applications in industrial plants.

What compliance documentation does this contactor carry?

The substance prohibitance date of 05/01/2012 confirms RoHS compliance. The SIRIUS brand typically provides CE, UL, and CSA certifications per the product family — verify the specific certificate for your jurisdiction with the order code.

MPN
3RT1446-3XX40-0LA2