3SUP-WH-ER-4 Safety Agency: UL IEC Voltage Rating: 250VAC Current Range(A): 10~250Amp Temp.Range: -25~+50°C Configuration : 3-M Features: Delta 3SUP-AH-ER-4 Safety Agency: UL IEC Voltage Rating: 250VAC Current Range(A): 10~250Amp Temp.Range: -25~+50°C Configuration : 3-M Features: Delta