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Siemens 3RT2036-1KB44-3MA0 — Contactors

Siemens 3RT2036-1KB44-3MA0 SIRIUS Contactor, 55 mm

MPN3RT2036-1KB44-3MA0
Active

Siemens SIRIUS 3RT2036-1KB44-3MA0 coupling contactor, size S2, 55 mm width, 174 mm depth, 24 VDC coil, screw-type terminals, screw and snap-on mounting on 35 mm DIN rail.

$133.35 – $376.33Ref. price · indicative, final on quote
Siemens 3RT2036-1KB44-3MA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2036-1KB44-3MA0 — Identification
ParameterValue
Contactor frame sizeS2
3RT2036-1KB44-3MA0 — 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
3RT2036-1KB44-3MA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2036-1KB44-3MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2036-1KB44-3MA0 — 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)
3RT2036-1KB44-3MA0 — 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
3RT2036-1KB44-3MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2036-1KB44-3MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2036-1KB44-3MA0 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth174 mm

Product details

Coil drive and auxiliary contact ratings

The 3RT2036-1KB44-3MA0: Rated control supply voltage is 24 VDC with a holding current of 6 A at that voltage; inrush peak is 2.6 A, so the PLC output or relay driving this coil must handle the surge. At 230 V AC, the contactor is rated for 10 hp motor load.

Switching frequency and endurance by duty class

Maximum switching frequency depends on the duty cycle: 1,000 operations/hour for AC-1 (resistive), 600/h for AC-2 (slip-ring motor), 800/h for AC-3 (squirrel-cage motor), 250/h for AC-4 (plugging/inching), and 800/h for AC-3e (enhanced AC-3). Mechanical endurance is typical 10,000,000 operations; arcing time is 10 to 20 ms, and DC operating delay is 30 to 55 ms.

Frequently asked questions

What is 3RT2036-1KB44-3MA0's listed width and depth?

The contactor has a width of 55 mm and a depth of 174 mm, fitting the S2 frame size for DIN-rail mounting.

What coil voltage does this contactor use?

The control coil is rated for 24 VDC with a holding current of 6 A at that voltage and an inrush peak of 2.6 A.

MPN
3RT2036-1KB44-3MA0