M4Q045-EA01-01: High-Power 25W Q-Motor
The M4Q045-EA01-01 is a high-output shaded-pole motor from ebm-papst’s renowned Q-Motor series. While sharing the standard 45mm stack height geometry with lower-power variants, the «EA» designation typically indicates a significantly higher power output of 25 Watts (shaft power), compared to the standard 16W models. This makes the M4Q045-EA01-01 the heavy-duty choice for larger commercial refrigeration evaporators, condensing units, and heat pump fans where the torque requirement exceeds the capability of standard motors. It retains the classic square design with versatile mounting options (foot or ring), allowing it to serve as a universal replacement for upgrading under-powered systems.
Technical Specifications
- Motor Type: 4-Pole Shaded Pole (Q-Motor).
- Voltage: 230 VAC (50/60 Hz).
- Power Output: 25 W (Shaft).
- Power Input: Approx. 85 – 90 W.
- Speed: 1300 RPM.
- Protection: Impedance protected (Auto-limit current).
- Bearings: Sintered bronze with oil reservoir.
Field Engineering & Maintenance
Lifecycle State: Active. Diagnosis: Since this motor draws more current than the 16W versions, ensuring the controller relay is rated for the inductive load is crucial. If the motor fails to start but is hot to the touch, verify the bearings. The 25W output generates more internal heat; therefore, proper airflow over the motor casing is mandatory. Installation Advice: Do not swap a 25W motor (EA series) with a 16W motor (CA/BD series) if the original spec called for 25W. The fan blade pitch is likely steeper (28°-34°), and a smaller motor will stall or overheat. Compatibility: Fully compatible with Siemens LOGO! and standard refrigeration controllers (Danfoss/Carel). Its standard footprint allows for drop-in retrofits in setups originally designed for lighter duty motors.
| Metric | Value |
|---|---|
| Current Draw | 0.62 A |
| Operating Temp | -30°C to +40°C |
| Insulation Class | Class B |
| Mounting | Universal (check grid dimensions) |
Pro-Tip
Use this motor when you need to drive larger fans (300mm+) with steep pitch angles in condensers that are prone to dirt buildup, as the extra torque provides a safety margin.
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