Panel Extension (PX3) Series

The PX3 offers an externally mounted surge solution that can be physically attached to the top or bottom of any panelboard, providing a reduced profile surge solution. PX3 suppression filter systems feature a powerful failure-free ISMâ„¢ (Integrated Suppression Module). Each MOV used in construction of the ISM is thermally fused and protected. The ISM also features surge-rated copper busing, robust filtering and advanced remote communication capabilities. The PX3 includes an internal disconnect option, allowing safer and easier repairs without having to cut power to the distribution panel.


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Surge Current (Per Mode)Model NumberData Sheet
200 kAPX3-200(PDF)
150 kAPX3-150(PDF)
125 kAPX3-125(PDF)
100 kAPX3-100(PDF)
80 kAPX3-080(PDF)
50 kAPX3-050(PDF)
Information common for entire PX3 Series
Book Spec (Word)
Sheet Note Spec (Word)
IOM Manual (PDF)
Warranty (PDF)
SPD Application Guide
DAM Binder