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Phoenix Contact is an industry leader with a comprehensive surge and lightning protection product line. Combined with over 25 years of experience and a selection of over 2,000 different surge protection products, we can help identify solutions to your application. From power line to data line, TRABTECH products protect the most sensitive and mission critical applications. Instrumentation and control surge protection offer products for signal lines used in a variety of industries such as water/waste water, oil and gas, paper and pulp, energy production, rail transportation, wind power, and many others. This unites are installed on instrumentation and control line before it enters the sensitive equipment such as PLCs and PCs. Transients use measurement and control signals as pathways to sensitive electronic equipment. Choosing surge protective devices here depends on the type of signal processing (such as two-, three- or four-conductor technology), the maximum signal voltage, and the transmission frequency.