符合IEC, Class Ⅰ的电源用SPD

ch, SPD for Power Supply IEC, Class I

符合IEC, Class Ⅱ的电源用SPD

SPD for Power Supply IEC, Class II

符合IEC, Class Ⅲ的电源用SPD

SPD for Power Supply IEC, Class III

通信设备用SPD

SPD for communication equipment

LAN用SPD

SPD for LAN

同轴用SPD

SPD for co-axial connectors