Surge Protection Devices products from Shanghai Yongji Electrical Holding Co., Ltd..

This surge protection device (SPD) protects electrical systems and equipment from transient overvoltages. It features an LED indicator to show operational status and a test button to verify functionality.

This surge protection device (SPD) protects electrical installations from transient overvoltages. It has a maximum discharge current of 40kA and a nominal discharge current of 20kA.