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- Siemens 1PH8286-1AF40-2BU2 SIMOTICS M-1PH8 Compact Asynchronous Motor 382kW 1500 r/min IP23 Siemens 1PH8286-1AF40-2BU2 SIMOTICS M-1PH8 Compact Asynchronous Motor 382kW 1500 r/min IP23
Siemens 1PH8286-1AF40-2BU2 SIMOTICS M-1PH8 Compact Asynchronous Motor 382kW 1500 r/min IP23
Siemens 1PH8286-1AF40-2BU2 SIMOTICS M-1PH8 Compact Asynchronous Motor 382kW 1500 r/min IP23
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- Description
The Siemens 1PH8286-1AF40-2BU2 is a SIMOTICS M-1PH8 compact asynchronous motor rated 382 kW and 2432 Nm at 1500 r/min, extending to 500 kW at 2000 r/min in the field-weakening range. Built to IP23 with open-circuit ventilation, it has a 280 mm shaft height, carries a Pt1000 temperature sensor with no encoder, and weighs 1400 kg.
Technical Specifications
| Catalog No | 1PH8286-1AF40-2BU2 |
| Brand | Siemens |
| Series | SIMOTICS M-1PH8 |
| Product type | Compact asynchronous motor |
| Shaft height | 280 mm |
| Degree of protection | IP23 |
| Cooling | Open-circuit ventilation |
| Mounting | IM B3 (IMV6) |
| S1 rating (BLM/SLM) at 400V supply | 1500 r/min, 382 kW, 2432 Nm, 730 A, 345 V |
| Field-weakening rating (ALM) at 400V supply | 1750 r/min, 445 kW, 2429 Nm, 730 A, 400 V |
| S1 rating (BLM/SLM) at 480V supply | 2000 r/min, 500 kW, 2387 Nm, 720 A, 455 V |
| Field-weakening rating (ALM) at 480V supply | 475 kW, 2062 Nm, 620 A, 500 V |
| Encoder | None (Pt1000 temperature sensor fitted) |
| Thermal time constant | 20 min |
| Moment of inertia | 52,000 kgcm2 |
| Weight | 1,400 kg |
| Terminal box designation | 1XB7712-P03 |
| Min. cooling air flow | 0.52 m3/s |
| Noise level (external fan, 50 Hz) | 74 dB |
| Pressure drop | 600 Pa |
| Color | Anthracite (RAL 7016) |
Selection Notes
The IP23 open-circuit ventilation on the 1PH8286-1AF40-2BU2 gives it a higher continuous rating in the 280 mm frame than a forced-ventilation IP55 winding, delivering 382 kW and 730 A at 1500 r/min, rising to 500 kW once the field-weakening range is reached on a 480 V supply. Its 20-minute thermal time constant is shorter than an IP55 sibling's, so it needs a cleaner cooling air path and leaves less margin against sustained overload. Pick the IP55 forced-ventilation version instead when the installation is dusty or exposed to washdown.