Advancing Circuit Protection Since 1943

As a leading manufacturer of thermal circuit protection devices, MP develops high-quality circuit breakers for a wide variety of products and equipment. Our thermal circuit breakers protect people and equipment by sensing and preventing dangers associated with electrical overloads and over-currents. MP has distinguished itself through unmatched quality and unparalleled service for over 80 years.

• Made in USA - Manufactured with American quality and precision
• Proven Reliability - Engineered by industry veterans with decades of experience
• Multiple Mounting Options - Surface mount, panel mount, and snap-in configurations
• Push-to-Reset Convenience - Easy manual reset without replacement
• Wide Amperage Range - From fractional amps to high-current applications
• Temperature Compensated - Consistent performance across operating conditions

MP was founded in 1940. In its early years, MP focused on developing innovative circuit breaker designs for the aerospace industry, which helped them become the exclusive supplier of all flight-critical circuit breakers for the Apollo and Space Shuttle programs. In the mid-1950s, MP began developing circuit breakers for commercial applications. MP's management team purchased the company in 1998. Today, they remain a privately held company that continues to strengthen its product portfolio of thermal circuit protection devices by offering innovative solutions for the most demanding applications. 

Quality USA Made Products