SPDs

Surge Protector Device(or surge suppressor) is an appliance designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or by shorting to ground any unwanted voltages above a safe threshold.The surge protection device (SPD) is used to describe electrical devices typically installed in power distribution panels, process control systems, communications systems, and other heavy-duty industrial systems, for the purpose of protecting against electrical surges and spikes, including those caused by lightning. Scaled-down versions of these devices are sometimes installed in residential service entrance electrical panels, to protect equipment in a household from similar hazards.

Device Ratings and Characteristics

Series Maximun Allowable Voltage Varistor Voltage Maximun Clamping Voltage Download
ACrms(V) DC(V) Min. Vb(Vdc) Max. Vc(V) lp(A)
A TYPE -- -- -- -- -- -- --
C TPYE 35~1000 45~1465 50~1620 56~1800 66~1980 110~2970 30~300
E TPYE 35~1000 45~1465 50~1620 56~1800 66~1980 110~2970 30~300
SPD-A/B/G 35~1000 45~1465 50~1620 56~1800 66~1980 110~2970 30~300