· Adopted the NEMA standard· Continuous service · voltage: 220V-240V(Single phase) 380V-415V(Three phase) · Power: 0.37~2.2KW(Single phase) 0.37~7.5KW(Three phase) · Insulation class: B · Protection grade: IP 68 · Minimum well diameter: Φ4" · Highest temperature of liquid: 40℃