MP was founded in 1943. In its early years, MP focused on developing innovative circuit breaker designs for the Aerospace Industry, which eventually led to MP becoming the exclusive supplier of all flight critical circuit breakers for the Mercury, Apollo and Space Shuttle Programs. MP circuit breakers have literally been to the moon and back many times! From lessons learned during its rigorous beginnings, in the mid 1950s, MP began its development of circuit breakers for commercial applications. In 1998, MP’s management team purchased the company. Today, MP remains a privately held company that continues to strengthen its product portfolio of thermal circuit protection devices by offering creative and innovative solutions for the most stringent commercial circuit protection applications.