Electric motor 45 kW 900 rpm 3-phase 280B3 IE3 MS
Technical specifications
| Power | 45 kW |
| Speed | 900 rpm |
| Condition | New |
| Frame size | 280 |
| Shaft diameter | 75 mm |
| Weight | 478 kg |
| Foot hole spacing | 457 x 368 mm |
| Starting method | star-delta (Y/Δ) - 400/690V |
| Manufacturer | Promotor |
| Efficiency class | IE3 |
Technical details
Flange can be fitted
Removable feet - feet can be mounted on the side of the motor
T3CR 280S-6
Documentation
Product description
Electric motor Promotor 45 kW 900 rpm – efficiency and reliability in the IE3 class
The Promotor MS 280B3 electric motor is an advanced drive solution intended for demanding industrial applications in which operating stability, high energy efficiency and long-term reliability are key. With a power of 45 kW and a rated speed of 900 rpm, the motor is excellent wherever high torque at relatively low speed is required. The unit meets the IE3 energy efficiency standard, which means minimal energy losses and real savings in running costs.
The 45 kW Promotor three-phase motor is widely used in heavy industry, mining, power generation, the chemical industry and in drives for pumps, fans, belt conveyors, mixers and compressors. The low speed of 900 rpm makes the unit particularly valued in applications requiring high starting torque and smooth, stable operation under full load. The motor's solid construction ensures trouble-free operation even in difficult environmental conditions.
The motor is built in frame size 280, with a shaft with a diameter of 75 mm, which ensures reliable and stable power transmission to the mating elements of the mechanical system. The unit's weight of 500 kg reflects a massive industrial construction made of top-quality materials. The B3 housing allows foot mounting, which makes it easier to integrate the motor with a variety of drive systems. The product is brand new, so the buyer gets full technical efficiency and a long service life.
By choosing the Promotor MS 280B3 IE3 45 kW electric motor, you are investing in a proven, energy-saving solution that complies with current EU standards on energy efficiency. The IE3 efficiency class significantly reduces electricity costs compared with older-generation units, which translates into a quick return on investment. The motor is available from stock in new condition, which minimises production downtime and allows immediate deployment in the target application.







