PTG Type 3 SPDs adopt the design of connection input/output in series connection to provide fine protection of common/differential mode interference with low voltage protection level, effectively ensure the safety and reliability of the terminal electrical equipment of industrial system.

The compact design uses the special Y-type protection circuit/dedicated thermo disconnect device, together with local indication window and remote signaling alarm, which ensures its outstanding performance.

PTG Type 3 SPDs are usually used to protect the power supply system of industrial electrical equipment, which are installed in LPZ 1-2.