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High-voltage surge arrester 3EL series
for electrical installationselectrical linefor electrical networks

high-voltage surge arrester
high-voltage surge arrester
high-voltage surge arrester
high-voltage surge arrester
high-voltage surge arrester
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for electrical installations, electrical line, for electrical networks
Other characteristics

Max.: 550 kV

Min.: 72.5 kV

Primary current

Max.: 65,000 A

Min.: 20,000 A


Siemens Energy 3EL silicone rubber surge arresters with cage design provide outstanding protection against overvoltages in networks up to 800 kV. Siemens Energy 3 EL cage design surge arresters are ideally suited for the reliable protection of: - Transformers - Circuit breakers - Generators - Motors - Capacitors - Traction vehicles - Bushings - Switchgear - Transmission lines The cage, made of fiberglass-reinforced plastic (FRP) rods, provides a rigid, reinforced structure ensuring high mechanical strength. The silicone rubber housing is directly molded onto the metal oxide varistors (MOVs) and the surrounding cage made of FRP rods. This creates a reliable seal that prevents moisture ingress and partial discharges. The MO resistors are not surrounded by a rigid mechanical coating, which is why no critical increases in pressure can occur in the surge arrester in the extremely rare event of an overload. The arc can escape directly through the soft silicone housing without damaging the mechanical structure. No internal parts are ejected in the process. The innovative Siemens Energy cage design is very secure. The silicone rubber is highly hydrophobic and UV-resistant. This keeps any conductive moisture from forming on the surface, and dirt deposits are rendered harmless as a result of the hydrophobic transfer. Silicone is highly fire-retardant and self-extinguishing in the event of fire. These properties ensure the reliable, maintenance-free operation of 3EL surge arresters. They are also lightweight, allowing for easy transport and a variety of installation options. 3EL surge arresters are suitable for use as station or line surge arresters.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.