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Siemens 3RT1034-3AG10 — Contactors

Siemens 3RT1034-3AG10 SIRIUS Power Contactor, S2, 18.5 kW at

MPN3RT1034-3AG10

Siemens SIRIUS 3RT1034-3AG10 power contactor, size S2, screw-type terminals, 18.5 kW at 500 V AC-3, 55 mm wide, 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

3RT1034-3AG10 — Identification
ParameterValue
Contactor frame sizeS2
3RT1034-3AG10 — 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
3RT1034-3AG10 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz100 V
3RT1034-3AG10 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1034-3AG10 — 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
3RT1034-3AG10 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0.75 ... 16 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1034-3AG10 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1034-3AG10 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1034-3AG10 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth115 mm
3RT1034-3AG10 — Specifications
ParameterValue
At AC7 ... 20 ms

Product details

It is rated for 18.5 kW at 500 V in AC-3 duty, which is the standard category for starting and stopping squirrel-cage motors — that 18.5 kW figure is the one that governs the real motor load it can handle, not a resistive rating. At 400 V AC-2 (slip-ring motors, moderate overloads) it is rated for 15 kW, and in AC-4 duty (plugging, inching) it handles 29 A at 400 V.

Screw-type terminals on the main current circuit accept 2x (0.75... 25 mm²) stranded or 2x (0.25... 2.5 mm²) solid.

The SIRIUS series is Siemens' standard industrial contactor line, so supply continuity is the norm.

Frequently asked questions

What are the key motor ratings for this contactor?

The key motor ratings are 18.5 kW at 500 V AC-3, 15 kW at 400 V AC-2, and 29 A at 400 V AC-4. The AC-3 rating is the one that governs standard motor starting.

What is the depth of this contactor?

The depth is 115 mm, with a width of 55 mm and height of 112 mm.

What wire sizes does the screw terminal accept?

The main circuit screw terminals accept 2x (0.75... 25 mm²) stranded or 2x (0.25... 2.5 mm²) solid conductors.

What is the operating temperature range?

During operation the range is -25 to +60 °C; storage range is -55 to +80 °C.

MPN
3RT1034-3AG10