SIMOTICS XP 1MB1 IE2 (Ex, Zone 21) · 55 kW · 4-pole · 250 M
MLFB: 1MB1611-2CB23-4AB4
Siemens/Innomotics SIMOTICS XP three-phase induction motor for hazardous areas (cast-iron housing, zone 21, Ex tb IIIC), 55 kW, 4-pole (1480 rpm), shaft height 250 mm, IE2, 400/690 V, IM B3. Article No. (MLFB): 1MB1611-2CB23-4AB4. For a different zone (22/2) or degree of protection, please contact OSA — zone selection is safety-critical and must match the actual installation environment. We offer IE1/IE2 efficiency class motors as replacement motors for existing equipment, for export outside the EU and for other cases permitted by Regulation (EU) 2019/1781. We will be happy to help you choose the right motor.
0
Technical parameters
| Power | 55 kW |
| Number of poles | 4 |
| Synchronous speed | 1500 min⁻¹ |
| Rated speed | 1480 min⁻¹ |
| Series | SIMOTICS XP |
| Frame material | cast iron |
| Efficiency class | IE2 |
| Shaft height | 250 mm |
| Frame size | 250M |
| Voltage 50 Hz | 400/690 V |
| Design | IM B3 |
| Rated torque | 355 Nm |
| Efficiency (4/4) | 93.5 % |
| Power factor cos φ | 0.85 |
| Rated current | 100 A |
| Weight | 385 kg |
| Product series | Performance Line |
| Moment of inertia | 0.75 kgm² |
| Current stated at voltage | 400 V |
| Type of protection | Ex tb IIIC |
| Ex zone | 21 |