Encapsulated E Series

The E series are heavy-duty metal oxide varistors designed mainly for industrial applications. They offer excellent surge protection for various electronic equipment such as: traffic and railway signal systems, communication equipment, waterworks, automatic control devices for power distribution, oil drilling and mining equipment (dredgers, cranes, etc.). The E housing offers excellent protection when exposed to different kinds of vibrations, dust, moisture, etc. The advantages of the E Series are: rigid terminals for secure wire contact, solid plastic housing for secure mounting, higher insulation resistance (polyurethane filling and plastic housing).


Main features
Wide Operating Voltage Range VRMS 130 V to 1100 V
Five Model Sizes Available 25 mm, 32 mm, square 33 mm, 60 mm, 80 mm
High Energy Absorption Capability Wmax (2 ms) 150 J to 6000 J
High Peak Current Capability Imax (8/20 µs) 15 kA to 100 kA
Case Design Provides Complete Electrical Isolation of Disc Assembly


 Technical data
Climatic Category 40/85/56 in accordance with IEC 68-1
LCT – 40°C
UCT +85°C
Damp Heat, Steady State (93% r.h., 40°C) 56 days in accordance with IEC 68-2-3
Operating Temperature -40 … +85°C in accordance with CECC 42 000
Storage temperature -40 … +110°C
Electric strength ≥ 2.5 kV in accordance with CECC 42 000
Insulation Resistance ≥ 1.0 GΩ in accordance with CECC 42 000
Response Time < 25 ns
Max. torque 1.0 Nm



E series catalogue