Surge Protection Products


Joslyn AC surge protection devices (SPDs) from Thomas & Betts, which includes more than 1,300 standard configurations, now are available with stainless steel enclosures for corrosive applications, such as wastewater treatment facilities. Other applications include oil and gas processing, civil construction, utilities, pulp and paper manufacturing, food and beverage processing, and mining. 

Available through Thomas & Betts’ network of distributors, Joslyn® SPDs protect operations from the damaging effects of electrical power surges, transients and noise, from the service entrance to the equipment level. Suitable for protecting single, split and three-phase applications ranging from 120 V to 600 V Delta, Joslyn® SPDs are capable of handling high-surge energy from 20 kA to 400 kA per phase and are suited to meet the many requirements of industrial, commercial, institutional and residential applications.   

The stainless steel enclosures are standard in Type 304 stainless steel, an alloy of iron, chromium and nickel. Enclosures in marine-grade Type 316 stainless steel, which contains molybdenum in addition to the metals contained the Type 304 stainless steel alloy, are available through special order. 


  • stainless steel enclosures

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