1.Working life more than 30 years 2.The box is fully closed, fully insulated and frost preventing 3.Small in size,easy instal Specification1. Suitable for outdoor location2. The box is fully closed, fully insulated and frost preventing3. Equip the charged monitor, Lightning arrester, it can be customized.4. The product has three kinds of voltage grade: 10KV,20KV, 35KV5. We can configured the ...