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Siemens 3RT1046-1CP04-0KV0 — Contactors

Siemens 3RT1046-1CP04-0KV0 SIRIUS Power Contactor, S3, 55 kW

MPN3RT1046-1CP04-0KV0

Siemens SIRIUS power contactor, 3RT1046-1CP04-0KV0, S3 size, 55 kW at 500 V AC-3, screw-type terminals, 188 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

3RT1046-1CP04-0KV0 — Identification
ParameterValue
Contactor frame sizeS3
3RT1046-1CP04-0KV0 — 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
3RT1046-1CP04-0KV0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT1046-1CP04-0KV0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1046-1CP04-0KV0 — 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
3RT1046-1CP04-0KV0 — 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
3RT1046-1CP04-0KV0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1046-1CP04-0KV0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1046-1CP04-0KV0 — Mechanical
ParameterValue
Width70 mm
Height146 mm
Depth188 mm
3RT1046-1CP04-0KV0 — Specifications
ParameterValue
At AC10.6g / 5 ms, 6.2g / 10 ms

Product details

It's rated for 55 kW at 500 V in AC-3 duty, which covers the majority of three-phase induction motor starts across pumps, fans, and conveyors. The 45 kW at 400 V AC-2 rating handles slip-ring or wound-rotor motors where the load is switched under reduced current.

Depth is 188 mm, so check your enclosure depth before panel layout.

Built-in auxiliary contacts are rated at 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V. For DC switching, the ratings drop to 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — the DC arc extinction is harder, so stay within these limits for PLC or relay coil loads.

Frequently asked questions

What are the key power ratings for this contactor?

It's rated for 55 kW at 500 V AC-3 (standard motor starting), 45 kW at 400 V AC-2 (slip-ring motors), and 80 A at 400 V AC-4 (reversing/jogging). The auxiliary contacts handle 10 A at 24 V and 6 A at 230 V AC.

Will this fit in a panel designed for a 3RT1036-1AB00?

No. The 3RT1036-1AB00 is an S2 frame size; this 3RT1046-1CP04-0KV0 is an S3 frame. The mounting footprint, DIN rail clip positions, and terminal spacing are different. A direct mechanical swap is not possible without panel modifications.

What wire sizes does the main circuit accept?

Screw-type terminals accept solid wire from 2x 0.5 mm² up to 2x 4 mm², and stranded wire from 2x 10 mm² up to 2x 50 mm². For the auxiliary circuit, solid wire from 0.5 mm² to 4 mm² per clamp is supported.

What is the depth of this contactor?

The depth is 188 mm. Width is 70 mm and height is 146 mm. Ensure your enclosure has at least 200 mm clearance behind the panel door for wiring and arc flash distance.

MPN
3RT1046-1CP04-0KV0