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Siemens 3RT1446-1BE40 — Contactors

Siemens 3RT1446-1BE40 SIRIUS Power Contactor, S3, 22 kW AC-2

MPN3RT1446-1BE40

Siemens SIRIUS S3 power contactor, 3RT1446-1BE40, AC-2 22 kW at 400 V, AC-1 50 kW at 230 V, screw terminals, 152 mm depth.

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

3RT1446-1BE40 — Identification
ParameterValue
Contactor frame sizeS3
3RT1446-1BE40 — 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
3RT1446-1BE40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1446-1BE40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1446-1BE40 — 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
3RT1446-1BE40 — 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
3RT1446-1BE40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1446-1BE40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1446-1BE40 — Mechanical
ParameterValue
Width70 mm
Height146 mm
Depth152 mm

Product details

What this SIRIUS S3 contactor does

The Siemens 3RT1446-1BE40 is a SIRIUS S3-frame power contactor rated for AC-2 motor switching at 22 kW at 400 V, and AC-1 resistive loads at 50 kW at 230 V or 148 kW at 690 V. For AC-3 duty it handles 29.9 kW at 500 V and 38.2 kW at 690 V. The insulation voltage is rated at 1 000 V, and the mechanical life is typical 10 000 000 cycles.

Side-by-side mounting is permitted. Main circuit connections use screw-type terminals. Stranded wire range is 2x (10... 50 mm²); solid wire accepts 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), and max. 2x (0.75... 4 mm²). At 40 °C the minimum permissible cross-section is 50 mm²; at 60 °C it drops to 35 mm² — derate the lug accordingly for high-ambient panels.

RoHS compliance date is 05/01/2012.

Frequently asked questions

What are the key power ratings for this contactor?

AC-2 motor switching: 22 kW at 400 V. AC-1 resistive: 50 kW at 230 V, 148 kW at 690 V. AC-3 motor switching: 29.9 kW at 500 V, 38.2 kW at 690 V. Insulation voltage is 1 000 V.

What wire sizes does the 3RT1446-1BE40 accept?

Stranded: 2x (10... 50 mm²). Solid: 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), max. 2x (0.75... 4 mm²). At 40 °C minimum is 50 mm²; at 60 °C minimum is 35 mm².

What compliance documentation does this contactor carry?

RoHS compliance date is 05/01/2012. The part is rated for pollution degree 3 and carries IP20 front protection (IP00 at terminals).

How does the 3RT1446-1BE40 compare to the 3RT1044-1FB46?

The 3RT1044-1FB46 is a smaller-frame SIRIUS contactor. The 3RT1446-1BE40 is an S3 frame with higher AC-2 and AC-3 power ratings — 22 kW vs lower on the 3RT1044. Panel fit differs: the 3RT1446-1BE40 is 152 mm deep versus a shallower depth on the 3RT1044, so verify enclosure depth before substituting.

MPN
3RT1446-1BE40