The M-Series is a low cost, miniature hydraulic/magnetic circuit breakers ideally designed for demanding applications requiring space saving features, aesthetics and snap-in front panel mounting. Its newest design features a compact, space saving, vertically mounted parallel pole configuration, which is UL489A listed up to 50 amps and is well suited for telecommunication equipment fitting in one rack unit. Furthermore, it features two uniquely designed terminals that provide the highest level of balanced circuit protection.