Product Overview

The Franklin Electric 2145059004GS is a 1/2 HP, 230V, single-phase submersible motor designed for use with compatible 4 in. water-well pump ends that use the NEMA 4 in. mounting configuration. It provides the motor portion of a complete submersible pump assembly and is intended for continuous submerged operation when the installation supplies the required water flow for motor cooling. The stainless construction, spline shaft, water-cooled design, and listed thrust capacity support properly matched residential, agricultural, and light commercial well applications.

This is a 3-wire motor. A correctly matched external control box is required because the start components are located outside the motor. The control box must match the motor horsepower, voltage, phase, and wiring arrangement. Motor selection should not be based on horsepower alone. Before installation, verify the pump-end load, NEMA mounting, shaft fit, voltage, phase, lead arrangement, service-factor amperage, thrust requirements, cable size, overload protection, and minimum cooling-flow conditions. The motor and pump end must be assembled and installed according to Franklin Electric instructions.

For replacement work, identify why the previous motor failed before installing the new assembly. Restricted cooling flow, damaged cable, incorrect voltage, poor splices, repeated cycling, sand loading, or a mismatched pump end can shorten motor life. The confirmed model number and electrical configuration should be used when selecting controls, cable, and the mating pump end.

Key Features:

• NEMA 4 in. submersible-motor configuration
• 1/2 HP, 230V, single-phase operation
• 3-wire design with 4 ft lead
• Water-cooled continuous-duty construction
• IP68 protection rating
• Stainless construction with spline shaft
• 300 lb thrust rating
• Counterclockwise rotation when facing the shaft

Common Uses:

• Replacement motor for compatible 4 in. submersible pump ends
• Residential water-well systems
• Agricultural or livestock-water systems when correctly sized
• Light commercial water-supply applications using a compatible pump end

Technical Specifications:

• Model: 2145059004GS
• Horsepower: 1/2 HP
• Voltage: 230V
• Phase: Single-phase
• Frequency: 60 Hz
• Wiring: 3-wire
• Full-Load Amps: 5A
• Service-Factor Amps: 6A
• Lead Length: 4 ft
• Protection: IP68
• Duty: Continuous
• Cooling: Water
• Thrust Rating: 300 lb
• Rotation: Counterclockwise facing the shaft
• Control Box: Required and must be correctly matched

Dimensions:

• Motor Diameter: 95.25 mm / 3.75 in.
• Motor Length: 9.51 in.
• Shaft Diameter: 0.61 in.
• Shaft End: Spline
• Weight: 19 lb

Compatibility and Installation Notes:

Confirm that the pump end uses the compatible NEMA 4 in. mount and that its horsepower and thrust requirements match this motor. Use a correctly matched control box; do not substitute a box with a different horsepower, voltage, phase, or wiring rating. Follow the manufacturer instructions for cable sizing, splice protection, grounding, overload protection, motor cooling, assembly torque, rotation, and startup. Installation by a qualified well or electrical professional is recommended where required.

FAQ:

Is this a complete well pump?
No. This listing is for the submersible motor; a compatible pump end and the rest of the well system are required.

Is an external control box required?
Yes. This is a 3-wire motor and requires a correctly matched control box.

Will it fit every 4 in. pump end?
No. Confirm the NEMA mount, shaft, horsepower, thrust load, and manufacturer compatibility before assembly.

What voltage and phase does it use?
It is rated for 230V, 60 Hz, single-phase operation.

Why Buy From Big Frog Supply?

Big Frog Supply provides clear product information, helpful support, and convenient online ordering for water-well equipment. Confirming the correct horsepower, voltage, wiring configuration, and hydraulic requirements before purchase helps reduce installation delays and compatibility problems.