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Siemens 3RT1046-1AM20-0UA0 — Contactors

Siemens 3RT1046-1AM20-0UA0 SIRIUS Power Contactor, Size S3,

MPN3RT1046-1AM20-0UA0

Siemens SIRIUS power contactor, Size S3, 3RT1046-1AM20-0UA0, 55 kW at 500 V, 25.4 kW at 690 V, screw-type terminals, DIN-rail mount, 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

3RT1046-1AM20-0UA0 — Identification
ParameterValue
Contactor frame sizeS3
3RT1046-1AM20-0UA0 — 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
3RT1046-1AM20-0UA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz208 V
3RT1046-1AM20-0UA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1046-1AM20-0UA0 — 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
3RT1046-1AM20-0UA0 — 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
3RT1046-1AM20-0UA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1046-1AM20-0UA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1046-1AM20-0UA0 — Mechanical
ParameterValue
Width70 mm
Height146 mm
Depth139 mm
3RT1046-1AM20-0UA0 — Specifications
ParameterValue
At AC10 ... 25 ms

Product details

The Siemens SIRIUS 3RT1046-1AM20-0UA0 is a Size S3 power contactor rated for motor switching up to 55 kW at 500 V and 25.4 kW at 690 V. Maximum switching frequency varies by duty: 900 cycles/h under AC-1 (resistive), 850 cycles/h under AC-3 (motor starting), and 250 cycles/h under AC-4 (plugging/reversing).

Termination and Wiring

Main circuit terminals accept solid conductors from 0.5 mm² up to 4 mm² (2x per clamp) and stranded conductors from 10 mm² up to 50 mm² (2x per clamp). The auxiliary contact block uses a separate solid-wire range of 0.5 to 4 mm².

Frequently asked questions

What are the key power ratings for 3RT1046-1AM20-0UA0?

It is rated for motor loads at 55 kW at 500 V and 25.4 kW at 690 V. The coil operates at 50/60 Hz with a voltage tolerance of 0.8 to 1.1 times rated at 50 Hz and 0.85 to 1.1 at 60 Hz.

Will 3RT1046-1AM20-0UA0 drop into a panel specified around 3RT1044-1FB46?

The 3RT1046-1AM20-0UA0 is a Size S3 contactor; the 3RT1044-1FB46 is a different frame size. Panel fit depends on the specific mounting footprint and terminal layout — verify dimensions and wiring clearances before substitution.

What is the depth of 3RT1046-1AM20-0UA0?

The depth is 139 mm, with a width of 70 mm and height of 146 mm.

What solid wire sizes does the main circuit accept?

The main circuit terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²). Stranded conductors range from 2x (10 to 50 mm²).

Where can I buy 3RT1046-1AM20-0UA0?

This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time.

MPN
3RT1046-1AM20-0UA0