mfr: SQUARE D BY SCHNEIDER ELECTRIC Provides overload and short circuit protection. Standard 1" per pole format. Thermal/magnetic tripping mechanism. 120/240 volt, 10,000 AIR. Compatible with Homeline load centers and CSED devices. #4 - 2/0 AWG wire range. UL listed and ANSI certified. Amp Rating=100 This item cannot be shipped to APO/FPO addresses. THIS ITEM CANNOT BE RETURNED. Please accept our apologies