The Square D SDLM-50 (also known as the Klixon SDLM-50) is a 50-amp sealed thermal circuit breaker featuring a manual reset, ignition protection, and a design built for harsh environments. Key Specifications Amperage Rating: 50 Amp Reset Type: Manual reset (push-to-reset button style) Protection: Sealed and ignition-protected against moisture, dust, and explosive atmospheres