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Siemens 3RT1034-3AF08-0PA3 — Contactors

Siemens 3RT1034-3AF08-0PA3 SIRIUS Power Contactor, S2, 18.5

MPN3RT1034-3AF08-0PA3

Siemens SIRIUS power contactor, size S2, 3RT1034-3AF08-0PA3, screw-type terminals, 18.5 kW at 500 V AC-3, 15 kW at 400 V AC-2, snap-on DIN rail mounting.

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

3RT1034-3AF08-0PA3 — Identification
ParameterValue
Contactor frame sizeS2
3RT1034-3AF08-0PA3 — 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
3RT1034-3AF08-0PA3 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.85 ... 1.1
Rated value @ 50 Hz110 V
3RT1034-3AF08-0PA3 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1034-3AF08-0PA3 — 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
3RT1034-3AF08-0PA3 — 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
3RT1034-3AF08-0PA3 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1034-3AF08-0PA3 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1034-3AF08-0PA3 — Mechanical
ParameterValue
Width85 mm
Height112 mm
Depth115 mm
3RT1034-3AF08-0PA3 — Specifications
ParameterValue
At AC7 ... 20 ms

Product details

The 3RT1034-3AF08-0PA3: It uses screw-type terminals for the main current circuit, accepting solid conductors up to 2x 2.5 mm² and stranded up to 2x 25 mm². The front face is rated IP20, while the terminal area is IP00 — the panel builder should account for that when laying out gland plates and busbars.

Side-by-side mounting is permitted, which saves rail space in a multi-contactor motor control center. Dimensions are 85 mm wide by 112 mm high by 115 mm deep — the depth matters when sizing the enclosure depth against the door or backplate.

Switching performance and mechanical life

Rated for 10,000,000 mechanical operations typical. Maximum switching rates vary by duty: 1,200 cycles/hour at AC-1, 1,000 at AC-3, 750 at AC-2, and 250 at AC-4. Coil operates at 50 Hz with a working range of 0.85 to 1.1 times rated voltage. The contactor's control voltage is 110 V at 50 Hz — verify your control transformer and PLC output ratings match this before wiring.

Frequently asked questions

What are the key motor ratings for this contactor?

It is rated 18.5 kW at 500 V AC-3, 15 kW at 400 V AC-2, and 29 A at 400 V AC-4. These are the duty-specific ratings that govern motor switching capability.

What compliance documentation is available for this part?

The substance prohibitance date of 05/01/2012 confirms RoHS and REACH compliance documentation is provided with the product.

What are the physical dimensions and mounting requirements?

Dimensions are 85 mm wide, 112 mm high, and 115 mm deep. It mounts via screw and snap-on onto a 35 mm DIN rail per EN 50022, and side-by-side mounting is allowed.

MPN
3RT1034-3AF08-0PA3