Skip to main content
Siemens 3RT1034-1AP04-3MA0 — Contactors

Siemens 3RT1034-1AP04-3MA0 SIRIUS Power Contactor, S2, 18.5

MPN3RT1034-1AP04-3MA0

Siemens SIRIUS power contactor, size S2, 3RT1034-1AP04-3MA0, screw-type terminals, 18.5 kW at 500 V, 15 kW at 400 V AC-2, 55 mm width, 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

3RT1034-1AP04-3MA0 — Identification
ParameterValue
Contactor frame sizeS2
3RT1034-1AP04-3MA0 — 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
3RT1034-1AP04-3MA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT1034-1AP04-3MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1034-1AP04-3MA0 — 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
3RT1034-1AP04-3MA0 — 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
3RT1034-1AP04-3MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1034-1AP04-3MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1034-1AP04-3MA0 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth164 mm
3RT1034-1AP04-3MA0 — Specifications
ParameterValue
At AC7 ... 20 ms

Product details

It carries an AC-2 rating of 15 kW at 400 V and an AC-3 rating of 18.5 kW at 500 V, meaning it handles both slip-ring and squirrel-cage motor duty cycles up to those power levels.

For those applications, the maximum switching rate is 250 operations per hour. For standard AC-3 motor starting, the contactor handles up to 1,000 ops/h. The auxiliary contact ratings cover control voltages across 24 V to 400 V: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V. That means the same auxiliary block works for both 24 VDC PLC outputs and 230 VAC pilot circuits without a derating step.

The contactor is 55 mm wide, 112 mm high, and 164 mm deep. Front protection is IP20 (finger-safe), while the terminal area is IP00 — the terminals are live when the panel door is open. Standard panel practice: interlock the door with a disconnect, or cover the terminals with a shrouding kit if operators reach inside live.

MPN
3RT1034-1AP04-3MA0