Description
ebm-papst M2E068-DF65-B4 (also known as M2E068DF65B4) is an industrial-grade size 68 single-phase external rotor AC motor engineered for direct-drive centrifugal and axial ventilation systems. Operating on a 230 VAC supply at 50/60 Hz, the motor delivers a rated speed of 2100 RPM, generating 75 W mechanical output and up to 35 Ncm nominal torque with an operating input power of 150 W (50 Hz) / 190 W (60 Hz). Built with a rugged unpainted rotor, dual precision maintenance-free ball bearings, and rotor-side condensation drainage holes, this motor ensures reliable continuous S1 duty across demanding thermal installations. Electrical protection and integration are streamlined via an internal automatic-reset thermal overload protector (TOP) and a pre-terminated 4-conductor silicone lead cable.
Key Features
- External Rotor Design: Compact size 68 profile optimizes thermal dissipation and direct mechanical integration with fan impellers.
- High Torque Density: Generates 35 Ncm nominal torque and 25 Ncm breakaway starting torque for stable acceleration.
- Dual Ball Bearings: Heavy-duty sealed ball bearing system enables horizontal or vertical rotor-down installation orientations.
- Integrated Motor Protection: Built-in internal thermal overload switch automatically safeguards windings against high operating temperatures.
- Silicone Lead Wiring: Heat-resistant 4G 0.5 mm² silicone connection cable fitted with wire-end ferrules for secure terminal connections.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | M2E068-DF65-B4 |
| Alternate Part Number | M2E068DF65B4 |
| Article Number | 16955-5-9980 |
| Integrated Motor Model | M2E068-DF |
| Motor Frame Size | Size 68 |
| Product Category | Fan Accessories |
| Component Type | AC Motor (External Rotor) |
| Phase & Supply Type | 1~ Single-Phase AC |
| Rated Voltage | 230 VAC |
| Frequency | 50 / 60 Hz |
| Operating Data Definition | kv (Customer spec, 50 Hz) / mb (Max. load, 60 Hz) |
| Speed (RPM) | 2100 RPM (50 Hz) |
| Power Input Rating | 150 W (50 Hz) / 190 W (60 Hz) |
| Mechanical Power Output | 75 W |
| Rated Current | 0.66 A (50 Hz) / 0.85 A (60 Hz) |
| Starting Current | 0.9 A (50 Hz) / 0.9 A (60 Hz) |
| Nominal Torque | 35 Ncm (50 Hz) / 34 Ncm (60 Hz) |
| Mean Starting Torque | 25 Ncm (50 Hz) / 25 Ncm (60 Hz) |
| Run Capacitor Rating | 4 µF / 400 VDB (S0 CE compliant) |
| Rotor Surface | Unpainted |
| Bearing Type | Precision Ball Bearings |
| Direction of Rotation | Counterclockwise / Left (viewed on rotor) |
| Installation Position | Shaft horizontal or rotor on bottom (rotor on top on request) |
| Condensation Drainage Holes | Rotor-side |
| Mounting Bolt Pattern | 5x M4 threaded holes on Ø 58.0 mm (2.28 in) bolt circle |
| Centering Diameter | Ø 83.3 mm (3.28 in) |
| Max. Screw-In Depth | 5 mm (0.20 in) |
| Weight | 2.0 kg (4.41 lbs) |
| Operating Mode / Duty Cycle | Continuous operation (S1) |
| Termination & Cable Specs | Silicone cable 4G 0.5 mm² with 4x wire-end ferrules (variable length) |
| Wiring Pinout / Connection | U1 = Blue, Z = Brown, U2 = Black, PE = Green / Yellow |
| Motor Protection | Thermal overload protector (TOP) internally connected |
| Electrical Protection Class | Class I (with customer protective earth connection) |
| Touch Current (IEC 60990) | < 0.75 mA (TN system, test circuit Fig. 4) |
| Insulation Class | Class F |
| Ingress Protection (IP) | IP44 (installation and position-dependent per EN 60034-5) |
| Moisture / Environmental Class | H1 |
| Operating Temperature Range | -25 °C to max. operational load (-13 °F) |
| Storage / Transport Temperature Range | -40 °C to +80 °C (-40 °F to +176 °F) |
| Standards & Compliance | EN 60335-1, EN 60034-1, EN 60204-1, CE, RoHS3 |
Applications
ebm-papst M2E068-DF65-B4 serves as a reliable replacement drive motor for commercial heating, ventilating, and air handling equipment. It is engineered to power OEM centrifugal scroll blowers, air curtain assemblies, ducted HVAC circulation units, and industrial exhaust modules. The motor provides dependable performance in harsh plant environments, including drying ovens, fume evacuation systems, and automated machinery cooling plenums.
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