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Siemens 3RT1046-1AP04 — Contactors

Siemens 3RT1046-1AP04 SIRIUS Power Contactor, S3, 45 kW AC-2

MPN3RT1046-1AP04

Siemens SIRIUS 3RT1046-1AP04 power contactor, size S3, screw-type terminals, 45 kW AC-2 at 400 V, 80 A AC-4 at 400 V, snap-on mounting on 35/75 mm rail, IP20 front.

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

3RT1046-1AP04 — Identification
ParameterValue
Contactor frame sizeS3
3RT1046-1AP04 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V80 A
Rated value @ 400 V3 A
Rated value @ 500 V55 kW
Rated value @ 690 V25.4 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
3RT1046-1AP04 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT1046-1AP04 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1046-1AP04 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 250 A
Short-circuit coordination type 2, fusefuse gL/gG: 160 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1046-1AP04 — 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
3RT1046-1AP04 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1046-1AP04 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1046-1AP04 — Mechanical
ParameterValue
Width70 mm
Height146 mm
Depth188 mm
3RT1046-1AP04 — Specifications
ParameterValue
At AC10 ... 25 ms

Product details

Integrator's quick-fit note

Duty-cycle reality check

The AC-3 maximum switching rate is 850 cycles per hour. That's the standard motor-start figure—conveyors, pumps, compressors running frequent starts. But if your application is AC-4 (plugging/reversing), the rate drops to 250 cycles per hour. The difference is the arc energy: reversing loads stress the contacts harder, so the contactor derates its mechanical life. For high-speed jogging or reversing, plan around the 250 c/h ceiling, not the 850 c/h headline.

Panel integration checklist

Dimensions: 146 mm high, 70 mm wide, 188 mm deep. The IP20 front with cover/box terminal means the busbar area is finger-safe once the cover is on; the terminal body itself is IP00, so keep live parts behind a panel door. Wire sizing: solid conductors accept 2x (0.5...1.5 mm²) for control, 2x (0.75...2.5 mm²) for aux circuits, and up to 2x (0.75...4 mm²) max. For the main power circuit, stranded goes to 2x (10...50 mm²). That covers up to 50 mm² for high-current feeds—no need for parallel cables in most installations.

MPN
3RT1046-1AP04