SIMOTICS XP 1MB1 IE2 (Ex, Zone 21) · 55 kW · 2-pole · 250 M
MLFB: 1MB1511-2CA23-4AA4
Siemens/Innomotics SIMOTICS XP three-phase induction motor for hazardous areas (cast-iron housing, zone 21, Ex tb IIIC), 55 kW, 2-pole (2970 rpm), shaft height 250 mm, IE2, 400/690 V, IM B3. Article No. (MLFB): 1MB1511-2CA23-4AA4. 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.
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Technical parameters
| Power | 55 kW |
| Number of poles | 2 |
| Synchronous speed | 3000 min⁻¹ |
| Rated speed | 2970 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 | 177 Nm |
| Efficiency (4/4) | 93.2 % |
| Power factor cos φ | 0.88 |
| Rated current | 97 A |
| Weight | 360 kg |
| Product series | Basic Line |
| Moment of inertia | 0.4 kgm² |
| Current stated at voltage | 400 V |
| Type of protection | Ex tb IIIC |
| Ex zone | 21 |