DL manuals Panamax Surge Protector M4-EX Specifications Panamax M4-EX Specifications - page 2 Other manuals for M4-EX: Instructions, Instructions 12 Page of 2 Go Download Print this page Bookmark us Voltage Protection Rating (UL1449 3rd Edition, 3,000A):___500V « ‹ Prev12 Summary of M4-EX Page 2Voltage protection rating (ul1449 3rd edition, 3,000a):___500v.