Place of Origin : Wenzhou,China

SM1 is applied to protect power line and equipments against overload, undervoltage and short-circuit faults (In≤400A)
Technical Parameter
Poles 2P, 3P, 4P
Frame 63, 100, 225, 400, 630, 800, 1250
Rated Frequency 50/60Hz
Rated Insulation Voltage Ui AC 800V (Frame 63: 690V)
Rated Operational Voltage Ue 400V
Rated Impulse Withstand Voltage Uimp 8KV (Frame 63: 6KV)

Standard & Certificate
Standard IEC 60947-2
Certificate CE