The Pollak Thermal Type Breaker is designed to automatically trip and interrupt the current flow if it exceeds a safe limit. It complies with SAE standard J553 and has an operating temperature range from -10°F to 150°F. This breaker is perfect for protecting your electrical system from overloads and short circuits. It is easy to install and provides reliable protection for your electrical system. FleetPride is your First Click in Heavy Duty®.