4GG Submersible Motor Submersible motors 4GG 4” submersible asynchronous two-pole electric motor made entirely of AISI 304 stainless steel for the parts in contact with water.The 4GX version completely in AISI 316 stainless steel is available on request. Flanging: NEMA 4″. Protection class: IP68. Max operating depth: 300 m. Max. starts: 20/h. 4GG Technical sheet 4GG Instructions