Rectorseal M05821 Unit Bearing Motor 16W 1550 Rpm 230V

Product Description

The RECTORSEAL M05821 is a unit bearing shaded pole motor rated at 16 watts maximum and 1550 RPM, designed for continuous-duty HVAC and ventilation applications. Built with a cast iron enclosure in a totally enclosed fan-cooled (TEFC) configuration, it delivers reliable performance in environments where motor protection from dust and moisture is essential. Single-phase, 230-volt operation with clockwise rotation makes it a direct fit for a range of small fan and blower assemblies. Impedance thermal protection is built in, guarding against overload conditions without external overload devices. HVAC technicians and mechanical contractors are the typical installing trades for this class of motor.

This motor is suited for residential and light commercial HVAC equipment, exhaust fans, unit ventilators, and similar small-motor applications requiring continuous-duty operation. Its single-speed design simplifies wiring and control. The 230-volt rating is standard for many commercial ventilation and fan coil unit configurations. With an RPM range of 1350 to 1900, it accommodates moderate speed variation across compatible blower and fan assemblies without sacrificing reliability under sustained load.

Key Features

• Shaded pole motor design with single-speed operation
• 16-watt maximum output for low-power continuous-duty fan applications
• TEFC cast iron enclosure provides protection against dust and moisture ingress
• Impedance thermal protection guards against overload without external devices
• Clockwise rotation at 1550 RPM nominal, with an operating range of 1350 to 1900 RPM
• Single-phase, 230-volt input suitable for standard commercial ventilation circuits

Compatibility

Designed as an OEM-style replacement unit bearing motor for single-phase 230-volt continuous-duty HVAC fan and ventilation equipment requiring a shaded pole motor with clockwise rotation.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified electrician. Disconnect and lock out all electrical power to the equipment before removing the existing motor or making any wiring connections. Verify rotation direction and voltage requirements of the application before energizing. Work should comply with applicable NEC requirements and local codes.

Technical Specifications

• Motor Type: Shaded Pole
• Wattage (Max.): 16 watts
• Voltage: 230 volts
• Phase: Single
• RPM (Nominal): 1550
• RPM Range: 1350 to 1900
• Rotation: Clockwise (CW)
• Speeds: 1
• Duty: Continuous
• Enclosure: TEFC (Totally Enclosed Fan Cooled)
• Bearing Type: Unit
• Thermal Protection: Impedance
• Housing Material: Cast Iron

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M05821