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The EXT50C Series SPD is a compact, state of the art high energy surge protection system. Its compact size saves valuable electrical room space. Plus, it can be installed in most retrofit situations. Available with surge rating of 50kA, the EXT50C is listed to UL 1449 Edition 4. The EXT50C is listed as a TYPE 1 device which means you don’t have to worry about where to install it. It can be installed upstream or downstream of the service main disconnect.

Using special technology, the EXT series has lower let through voltages at high surge currents than similar hardwire devices. In addition, its technology prevents premature failure under unusual voltage conditions. Exclusive multipath protection means that redundant surge elements continue to provide protection even should an internal surge element fail. The EXT series includes intelligent indicators for each protection mode. You can confirm total protection with a quick inspection of the LED indicators.

Please call for availability, quantity pricing and lead times.

Additional information


120/240 1 Phase, 120/208Y 3 Phase, 120/240D 3 Phase, 277/480 3 Phase, UPS 3 Phase Universal


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