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Siemens 3RT1035-1QB44-3MA0 — Contactors

Siemens 3RT1035-1QB44-3MA0 SIRIUS Power Contactor, S2, 22 kW

MPN3RT1035-1QB44-3MA0

Siemens SIRIUS power contactor, size S2, 3RT1035-1QB44-3MA0, 22 kW at 500 V AC-3, screw-type terminals, 55 mm width, 179 mm depth.

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

3RT1035-1QB44-3MA0 — Identification
ParameterValue
Contactor frame sizeS2
3RT1035-1QB44-3MA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V35 A
Rated value @ 400 V3 A
Rated value @ 500 V22 kW
Rated value @ 690 V11.4 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
3RT1035-1QB44-3MA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1035-1QB44-3MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1035-1QB44-3MA0 — 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
3RT1035-1QB44-3MA0 — 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
3RT1035-1QB44-3MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1035-1QB44-3MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1035-1QB44-3MA0 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth179 mm

Product details

The 55 mm width and 179 mm depth determine the DIN-rail footprint. At 55 mm, it occupies three 18 mm module spaces — standard for an S2 frame. The 112 mm height leaves clearance for a typical 200 mm tall enclosure backplate. The minimum permissible cross-section at 40 °C is 16 mm², which governs the smallest wire you can terminate for full rated current — important when paralleling smaller conductors.

Compliance documentation is in place: the substance prohibition date of 05/01/2012 aligns with RoHS and REACH requirements. No further compliance gaps to flag for EU or UKCA markets.

Mechanical and Electrical Endurance

Mechanical life is typical at 10,000,000 operations — this is the wear-out figure for the moving armature and springs under no-load cycling. Electrical life varies by duty: 1,200 operations per hour at AC-1 (resistive), 1,000 at AC-3 (motor running), and 300 at AC-4 (plugging/reversing).

Frequently asked questions

What are the key motor power ratings for this contactor?

In AC-3 duty, it is rated for 22 kW at 500 V and 11.4 kW at 690 V. At AC-2 at 400 V, it handles 18.5 kW. The AC-4 current rating is 35 A at 400 V.

What are the physical dimensions for panel layout?

Width is 55 mm, height is 112 mm, and depth is 179 mm. It mounts on 35 mm DIN rail per EN 50022.

What wire sizes does the screw terminal accept?

Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded: 2x (0.75 to 25 mm²). Minimum at 40 °C is 16 mm².

Can this contactor be mounted side-by-side with others?

Yes, side-by-side mounting is permitted without derating. This allows dense packing on the DIN rail.

What compliance documentation is available?

The substance prohibition date of 05/01/2012 indicates RoHS and REACH compliance. Pollution degree 3 supports industrial environment certification.

MPN
3RT1035-1QB44-3MA0