Skip to main content
Siemens 3RT1036-1BF44 — Contactors

Siemens 3RT1036-1BF44 SIRIUS S2 Power Contactor, 30 kW AC-3

MPN3RT1036-1BF44

Siemens SIRIUS S2 power contactor, 3RT1036-1BF44, screw-type terminals, 30 kW at 500 V AC-3, 22 kW at 400 V AC-2, 41 A at 400 V AC-4, snap-on 35 mm 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

3RT1036-1BF44 — Identification
ParameterValue
Contactor frame sizeS2
3RT1036-1BF44 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V41 A
Rated value @ 400 V3 A
Rated value @ 500 V30 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
3RT1036-1BF44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1036-1BF44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1036-1BF44 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 160 A
Short-circuit coordination type 2, fusefuse gL/gG: 80 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1036-1BF44 — 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
3RT1036-1BF44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1036-1BF44 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1036-1BF44 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth179 mm

Product details

Rated for 30 kW at 500 V in AC-3 duty (motor switching), 22 kW at 400 V in AC-2 duty (slip-ring motor starting), and 41 A at 400 V in AC-4 duty (plugging/inching). These are the ratings that govern real motor control fit — the AC-3 figure is the one to match against the motor nameplate. The contactor carries an operational current factor of 0.8 (initial) and 1.1 (full-scale), meaning it can handle sustained overloads up to 10% above nominal under the right conditions.

RoHS compliance date is 05/01/2012, confirming the part meets the EU Restriction of Hazardous Substances directive for the substance prohibitance listed.

Dimensions: 112 mm height, 55 mm width, 179 mm depth. Side-by-side mounting is permitted, so multiple contactors can be ganged without spacing gaps. Terminal capacity: solid conductors accept 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), max. 2x (0.75...4 mm²); stranded accepts 2x (0.75...25 mm²). Minimum permissible conductor at 40 °C is 16 mm².

Electrical Performance

Coil rated at 110 V. Switching times: arcing time 10...15 ms, DC dropout 20...25 ms. Mechanical life typical 10,000,000 operations. Maximum switching frequency varies by duty: AC-1 (resistive) 1,000 cycles/h, AC-2 400 cycles/h, AC-3 800 cycles/h, AC-4 300 cycles/h. Auxiliary contact ratings at various DC voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V. Pollution degree 3 (industrial environment).

Frequently asked questions

What are the key motor ratings for 3RT1036-1BF44?

The contactor is rated 30 kW at 500 V AC-3 for standard motor switching, 22 kW at 400 V AC-2 for slip-ring motor starting, and 41 A at 400 V AC-4 for plugging and inching duty.

What is the depth of 3RT1036-1BF44?

The depth is 179 mm. Overall dimensions are 112 mm height, 55 mm width, 179 mm depth.

What conductor sizes does the 3RT1036-1BF44 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). Minimum permissible at 40 °C is 16 mm².

What compliance documentation is available for 3RT1036-1BF44?

RoHS compliance is confirmed with a substance prohibitance date of 05/01/2012. The part is a Siemens SIRIUS product carrying the manufacturer's standard declarations of conformity.

Where can I buy 3RT1036-1BF44?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer.

MPN
3RT1036-1BF44