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Siemens 3RT1035-1BF44 — Contactors

Siemens 3RT1035-1BF44 SIRIUS Power Contactor, 22 kW at 500 V

MPN3RT1035-1BF44

Siemens SIRIUS power contactor, 3RT1035-1BF44, size S2, 22 kW at 500 V AC-3, screw terminals, snap-on DIN rail.

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

3RT1035-1BF44 — Identification
ParameterValue
Contactor frame sizeS2
3RT1035-1BF44 — 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
3RT1035-1BF44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1035-1BF44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1035-1BF44 — 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
3RT1035-1BF44 — 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
3RT1035-1BF44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1035-1BF44 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1035-1BF44 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth179 mm

Product details

The Siemens 3RT1035-1BF44 is a SIRIUS power contactor in size S2, rated for switching motor loads up to 22 kW at 500 V in AC-3 duty. It also handles 18.5 kW at 400 V in AC-2 duty and 35 A at 400 V in AC-4 duty.

Environmental and compliance data

RoHS compliance is documented with a substance prohibitance date of 05/01/2012.

The 3RT1035-1BF44 measures 55 mm wide, 112 mm high, and 179 mm deep. It supports side-by-side mounting without derating, which simplifies dense panel layouts. The screw terminals accept solid conductors: 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), max 2x (0.75...4 mm²); stranded: 2x (0.75...25 mm²); and solid/stranded: 2x (0.75...16 mm²). Minimum permissible cross-section at 40 °C is 16 mm².

Frequently asked questions

Where can I buy 3RT1035-1BF44 and how do I get a price?

This part is sourced to order against an RFQ. Availability and current pricing are confirmed at quote time through independent distribution.

What is 3RT1035-1BF44's depth?

The depth is 179 mm.

What compliance documentation does Siemens provide for 3RT1035-1BF44?

RoHS compliance is documented with a substance prohibitance date of 05/01/2012. The contactor is rated pollution degree 3 per IEC standards.

MPN
3RT1035-1BF44