Us Motors 6174 Psc Ac Motor 1/2 Hp 1725 Rpm Tefc 56 Frame

Product Description

The US MOTORS 6174 is a single-phase permanent split capacitor (PSC) AC motor built with a totally enclosed fan-cooled (TEFC) enclosure and a rigid mount configuration. Rated at 1/2 horsepower and 1725 RPM nameplate speed, it operates on 100 to 120 volts or 200 to 240 volts at 60 or 50 Hz, making it suitable for both domestic and international voltage supply. The 56 frame size and ball bearing construction are standard fitment for a wide range of light commercial and residential mechanical equipment. Licensed HVAC technicians, plumbers, and mechanical contractors install this motor as a direct drive or belt drive replacement in pumps, fans, and related rotating equipment.

This motor is suited for residential and light commercial applications where a durable, enclosed motor is required to resist dust and moisture ingress. Its reversible rotation allows installation flexibility depending on the driven equipment. The Class B insulation rating and 1.25 service factor provide a margin for continuous-duty cycles common in HVAC air handlers, exhaust fans, and pump assemblies. The 5/8-inch shaft diameter and 1-7/8-inch shaft length accommodate standard couplings and pulleys used across many HVAC and plumbing system configurations. This motor draws 6.3 to 5.6 amps at low voltage and 3.1 to 2.8 amps at high voltage under full load.

Key Features

• 1/2 HP output with 1725 RPM nameplate speed for reliable torque delivery
• Dual voltage configuration: 100 to 120 volts or 200 to 240 volts at 60 or 50 Hz
• TEFC enclosure protects windings from dust, moisture, and airborne debris
• Reversible motor rotation for flexible installation orientation
• 1.25 service factor supports intermittent overload in continuous-duty cycles
• Ball bearings provide long service life with minimal maintenance

Compatibility

Designed as an OEM-style replacement for 56 frame, 1/2 HP single-phase PSC motors used in residential and light commercial HVAC, fan, and pump applications requiring a TEFC rigid mount configuration.

Installation Notes

Installation should be performed by a qualified electrician or licensed mechanical contractor in accordance with NEC requirements for motor branch circuit wiring and overcurrent protection. Disconnect and lock out all power to the equipment before removing the existing motor or making any wiring connections. Verify supply voltage matches the motor nameplate before energizing. Confirm shaft alignment and coupling fit before applying load to avoid premature bearing wear.