Replacement Breaker type A Challenger, Thomas & Betts, Crouse Hinds or Connecticut Circuit Breaker companies all made this breaker in the past. Items are new. Maximum size is 50 Amps. No larger size. Originally made by Crouse-Hinds, then Sylvania, Challenger, Thomas & Betts and now Connecticut Breaker Co. Alternate No. UBITBA250
` Breaker Outlet inspects all of our products prior fulfilling your order. New A250's come with a 1 year warranty. All Re-Certified A250's come with a 2 year warranty.