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Siemens 3RT2036-1KB44 — Contactors

Siemens 3RT2036-1KB44 SIRIUS Contactor, 24 VDC, Size S2

MPN3RT2036-1KB44
Active

Siemens SIRIUS 3RT2036-1KB44 coupling contactor, Size S2, 24 VDC coil, screw-type terminals, 55 mm width, 174 mm depth, DIN rail mount.

Siemens 3RT2036-1KB44 datasheet (PDF)
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

3RT2036-1KB44 — Identification
ParameterValue
Contactor frame sizeS2
3RT2036-1KB44 — 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 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V10 hp
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2036-1KB44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2036-1KB44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2036-1KB44 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 160 A (690 V, 100 kA), aM: 80 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA)
Short-circuit coordination type 2, fusegG: 80A (690V,100kA), aM: 50A (690V,100kA), BS88: 63A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2036-1KB44 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2036-1KB44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2036-1KB44 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2036-1KB44 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth174 mm

Product details

Coupling contactor for interlocking and load isolation

The 3RT2036-1KB44 is a SIRIUS coupling contactor — not a general-purpose motor starter, but a unit designed for load isolation, interlocking between power paths, or switching auxiliary circuits where the main contacts are configured as 18...1 (typically 3 NO + 1 NC). The 24 VDC coil draws a 2.6 A inrush peak, with a hold current that settles within the 30-55 ms pickup time. The arcing time is 10-20 ms, which matters when coordinating with upstream protection devices. Rated for 10 hp at 230 V, it fits motor loads in that power band, but the switching rate limits per duty cycle (800 ops/h at AC-3, 250 ops/h at AC-4) define the application envelope.

Panel fit: Size S2, 55 mm wide, DIN rail mount

Size S2 chassis: 55 mm wide, 114 mm high, 174 mm deep.

Active production, sourced per RFQ

Quoted to order against the BOM quantity through independent distribution.

Frequently asked questions

How can I check pricing and availability for the 3RT2036-1KB44?

Submit an RFQ through this page.

What is the width and depth of the 3RT2036-1KB44?

Width is 55 mm, depth is 174 mm, height is 114 mm — Size S2 footprint for DIN rail mounting.

MPN
3RT2036-1KB44