Overview
The Dayton 3N7947 is a three-phase AC industrial motor rated 5HP at 3485 RPM, ideal for continuous-duty general-purpose applications. Built with heavy-duty construction, this used motor delivers reliable performance in manufacturing, HVAC, and material handling environments where consistent torque and dependable operation are required.
Key Features
- 5 horsepower rating at 3485 RPM full load
- Three-phase AC induction motor design for industrial duty
- Suitable for pumps, blowers, machine tools, and conveyor drives
- Can withstand high voltage spikes from variable frequency drives
- Heavy-duty construction for dusty, dirty, nonhazardous industrial environments
- Simple wiring configuration with full-fact nameplate information
Technical Specifications
- Power Rating: 5 HP
- Speed (Nameplate): 3485 RPM
- Motor Type: 3-Phase AC Induction Motor
- Application Class: General Purpose Industrial
- Enclosure Type: TEFC (Totally Enclosed Fan Cooled) – typical for Dayton industrial motors
- Duty Cycle: Continuous
- Cooling Method: Forced air cooling (fan-cooled)
Typical Applications
The Dayton 3N7947 is well-suited for:
- Centrifugal and reciprocating pump drives
- Ventilation equipment and air handling units
- Machine tool spindle drives
- Conveyor and belt drive systems
- Compressor and blower applications
- Industrial mixers and agitators
Note: This motor is not recommended for cooling tower applications due to the high vibration and splash environment typical of those systems.
Compatibility & Replacements
Compatible With
- Standard three-phase 208–230/460V electrical systems (verify voltage on nameplate)
- Magnetic starters and variable frequency drives (VFD)
- Soft-start controllers
- NEMA mounting flange installations (confirm frame size)
- Standard industrial control circuits and motor protection devices
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The specific replacement model numbers depend on frame size, voltage configuration, and mounting specifications documented on the original nameplate.
Works With
- Three-phase power distribution systems (208V, 230V, 460V – verify nameplate)
- Motor control centers (MCC) and disconnects
- NEMA-rated enclosures and junction boxes
- Overload relays and thermal overload devices
- Variable frequency drive (VFD) systems for speed control
