Description
The ebmpapst M4Q045-EF03-04 is a high-performance 230 V industrial shaded-pole motor with dimensions of 83 x 83 mm, meticulously engineered for critical thermal management in ventilation and refrigeration environments. This unit integrates a high-torque AC motor with a 45 mm motor size optimized for a 110.0 W power envelope, driving compatible impellers to a peak velocity of 1550 RPM. Designed to operate reliably in continuous duty cycles, it delivers consistent rotational force for air displacement through large evaporator coils and condenser units. The mechanical foundation consists of a maintenance-free sleeve bearing system and a die-cast aluminum housing, providing exceptional longevity in high-moisture conditions. Featuring a robust electrical connection and a versatile multi-mount design, this motor is an essential component for commercial refrigerated display cases, cold rooms, and industrial ventilation systems where constant speed and heavy-duty durability are mandatory.
M4Q045-EF03-04 Fan Parameters
Manufacturer: ebmpapst
Model Number: M4Q045-EF03-04
Motor Model: M4Q045-EF
Series: Q-Motor
Type: AC Shaded-Pole Motor (1~ Phase)
Bearing Type: Sleeve Bearing
Nominal Voltage: 230 VAC
Frequency: 50 / 60 Hz
Voltage Range: 200.0 – 240.0 VAC
Dimensions: 83 x 83 mm
Motor Size: 45 mm
Weight: 2.2 kg
[Electrical Data]
Input Power (50/60Hz): 110.0 / 100.0 W
Output Power (50/60Hz): 34.0 / 34.0 W
Nominal Current: 0.72 A
Nominal Speed (50/60Hz): 1300 / 1550 RPM
Motor Design: Shaded-pole motor, 4-pole
Motor Protection: Impedance protection
Insulation Class: Class B
Insulation Resistance: >10M ohm at 500 VDC
Dielectric Strength: 1500 VAC for 1 minute
Termination: Multi-core cable (with grounding)
[Performance & Construction]
Max. Air Flow: Performance depends on attached impeller size
Max. Static Pressure: Performance depends on attached impeller size
Direction of Rotation: Counter-clockwise (viewed toward shaft end)
Housing Material: Die-cast aluminum
Shaft Material: Steel, nickel-plated
Degree of Protection: IP42
[Reliability & Safety Standards]
Min. Ambient Temperature: -30 °C
Max. Ambient Temperature: 40 °C
Operating Mode: S1 (Continuous operation)
Mounting Position: Shaft horizontal or rotor on bottom
Standard Compliance: EN 60335-1, CE
Approval Agency: VDE, CE, UL, CSA
Application
The ebmpapst M4Q045-EF03-04 axial fan motor is used in commercial refrigerated display cases, walk-in cold room evaporators, small condenser units, laboratory exhaust hoods, and household ventilation systems.








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