1. Diameter 34mm, square shape 2. B type terminal, Flat 3. AC voltage 510Vac; 4. Varistor voltage 820V +/-10% 5. Peak Current: 40000A 6. CE, UL approval 7. RoHS compliant 8. The products are widely used in builing outdoor leading-in wires (such as, switch), mining, petrolatum equipments, power supply control, power transmission, telecommunication, networks, railway, motor control, etc.