ET80 Series

ET80 types are heavy-duty metal oxide varistors designed mainly for industrial applications. They are equipped with thermal cut-off device and remote signalisation. They offer excellent surge protection for various electronic equipment: windmills, traffic and railway signal systems, communication equipment, waterworks, automatic control devices for power distribution, oil drilling and mining equipment (dredgers, cranes, etc.).

ET80 housings offer an excellent protection also when they are exposed to different kinds of vibrations, dust, moisture, etc.

The advantages of the ET80 Series are: rigid terminals for good wire contact, a thermal cut-off device which protects ET80 from varistor failure in event of abnormal overvoltage or thermal runaway; ET80 has solid plastic housing for secure mounting, higher insulation resistance (polyurethane filling and plastic housing) and remote terminals. Remote signalisation can be achieved by external circuitry.

Catalogue ET80

Wide Operating Voltage Range V_RMS	130 V - 1100 V
High Max. Discharge Current Capability I_max (8/20 µs)	100000 A
- rigid terminals for secure wire contact - case design provides complete electrical isolation of disc assembly - thermal cut-off device - remote signalisation and remote terminal - flame retardant housing (UL 94 V-0) - flame retardant filling (UL 94 V-0)

V = Varsi metal oxide varistor
750 = Max. AC operating voltage
ET = E varistor design with Thermo cut-off device
80 = diameter of varistor disc