Siemens 3RT2036-1KB44-3MA0 SIRIUS Contactor, 55 mm
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.
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S2 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 41 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 10 hp |
| Rated value @ 24 V | 6 A |
| Rated value @ 60 V | 2 A |
| Rated value @ 110 V | 1 A |
| Rated value @ 220 V | 0.3 A |
| Parameter | Value |
|---|---|
| Control supply voltage type | DC |
| Parameter | Value |
|---|---|
| Main poles | 3 |
| Main NO contacts | 3 |
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Parameter | Value |
|---|---|
| Short-circuit coordination type 1, fuse | gG: 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, fuse | gG: 80A (690V,100kA), aM: 50A (690V,100kA), BS88: 63A (415V,80kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (500 V, 1 kA) |
| Parameter | Value |
|---|---|
| Main circuit connection | screw-type terminals |
| Aux. / control circuit connection | screw-type terminals |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Mounting method | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715 |
| Side-by-side mounting | Yes |
| Parameter | Value |
|---|---|
| Durability (operating cycles, typ.) | 10 000 000 |
| Durability with aux. switch block (cycles, typ.) | 10 000 000 |
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
| Parameter | Value |
|---|---|
| Width | 55 mm |
| Height | 114 mm |
| Depth | 174 mm |
Product details
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.
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.