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While some shunt-only devices can clamp at below the recommended voltages, they do little to limit the fast rising wavefront energy (dI/dt and dV/dt) prior to the onset of clamping.
The superior level of protection offered by surge protection filters means enhanced operational reliability for electronics and telecommunications equipment connected to the mains power supplies downstream from the surge filters.
Typically, coaxial surge protectors should be mounted into grounded bulkheads at the point of entry of feeder cables.
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