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Siemens 3RT1034-1AD20 — Contactors

Siemens 3RT1034-1AD20 SIRIUS Power Contactor, 18.5 kW at 500

MPN3RT1034-1AD20

Siemens SIRIUS, power contactor, 3RT1034-1AD20, Size S2, 18.5 kW at 500 V AC-3, screw terminals, DIN rail mount.

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

3RT1034-1AD20 — Identification
ParameterValue
Contactor frame sizeS2
3RT1034-1AD20 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V29 A
Rated value @ 400 V3 A
Rated value @ 500 V18.5 kW
Rated value @ 690 V10 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
3RT1034-1AD20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz42 V
3RT1034-1AD20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1034-1AD20 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 125 A
Short-circuit coordination type 2, fusefuse gL/gG: 63 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1034-1AD20 — 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 (0.75 ... 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 standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1034-1AD20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1034-1AD20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1034-1AD20 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth115 mm
3RT1034-1AD20 — Specifications
ParameterValue
At AC7 ... 20 ms

Product details

Its headline rating is 18.5 kW at 500 V under AC-3 duty, which means it handles the high inrush of a squirrel-cage motor starting direct-on-line up to that load — the rating that governs real-world motor switching, not the resistive AC-1 figure.

Termination and Wiring

This range covers most panel wiring from control-circuit tails to motor feeders; the larger stranded capacity handles the heavier cable for the 18.5 kW output.

Environmental and Protection Ratings

The front of the contactor is rated IP20 — finger-safe for panel installation — while the terminal area is IP00, meaning the wiring zone is open and must be housed within the enclosure. Pollution degree 3 indicates it tolerates conductive dust and humidity typical of industrial atmospheres.

Frequently asked questions

What is the closest functional second-source for 3RT1034-1AD20?

The peer 3RT1034-1AN60-1AA0 shares the same Size S2 frame and main power ratings, so it drops into the same panel footprint without rewiring the power circuit. The difference is the coil voltage and auxiliary contact configuration — verify those before substituting.

What are the key ratings for 3RT1034-1AD20?

It is rated for 18.5 kW at 500 V AC-3 motor duty, mounts on 35 mm DIN rail, accepts screw terminals for solid up to 4 mm² and stranded up to 25 mm², and has a mechanical endurance of 10,000,000 operations typical.

MPN
3RT1034-1AD20