Franklin Electric 4" encapsulated submersible motors, built in ISO 9001 certified facilities for outstanding performance in 4" or larger water wells.
The 3-phase motor offers maximum life and highest efficiency under various load conditions in combination with a 6500 N thrust bearing. It should ideally be combined to the Franklin Electric SubStart/SubTronic3P control boxes for maximum system performance, protection and warranty.

Standard Motor Design Specifications
- Hermetically sealed stator with 316SS shell.
- Anti track, self healing stator resin prevents motor burn out, mechanically supports the winding and provides fast heat dissipation.
- High efficiency electrical design for low operation costs (low operation cost, cool running winding)
- Removable water bloc lead connector
- No-wear, water lubricated radial and thrust bearings for 100 % maintenance free operation
- Non-contaminating FES 93 filling liquid
- Various agency approvals for use in drinking water
Brackish Water version Specifications:
- For use in water that has more salinity than fresh water, but not as much as seawater.
- The novel Franklin Electric Brackish Water Motor proposes a cost-effective solution wherever standard 4" motors are not giving sufficient service life.
Pollution Recovery Motor-version Specifications
- 304 graded stainless steel as standard, 316SS as an option
- Fluorelastomere (Viton®) rubber parts
- Special Polyuretane (PUR) lead assemblies
Technical Specification:
Options:
- 3-phase High Thrust Motor range: 2.2 – 9.3 kW
- 4" NEMA flange
- Thrust capacity: 6500 N
- Rotation: reversible
- Protection: IP 68
- InsulationCl.B
- Nominal ambient temperature: 30 °. with 0.08 m/s cooling flow
- Starts per hourmax. 20
- Motors installation orientationvertical to horizontal, shaft upwards
- Voltage tolerance380 - 415 at 50 Hz from nominal: -10 % / +6 %
- Protection requirements: EN 61947-4-1
- Motors in full 316SS with SiC seal
- Motors with factory- installed lead in single packing
- Built-in lightning arrestor
- Various cable lengths
- Special voltages on request
- Alternative material executions
Links
- Order selection and performance characteristics of 4” hight thrust encapsulated submersible motors (50Hz)
- Specifications and accessories of 4” high thrust encapsulated submersible motors
- Τεχνικό φυλλάδιο υποβρύχιων κινητήρων 4” σε κάψουλα
- Submersible motors catalogue
- Installation, Operation and Maintenance manual of 4” encapsulated submersible motors
- Κατάλογος προϊόντων Franklin Electric