· Adopted the NEMA standard· Continuous service · voltage: 220V-240V(Single phase) 380V-415V(Three phase) · Power: 2.2~5.5KW(Single phase) 2.2~30KW(Three phase) · Insulation class: B · Protection grade: IP 68 · Minimum well diameter: Φ6" · Highest temperature of liquid: 40℃