Techna rocker switch circuit breakers techna m105b1br3 this techna m1 non illuminated rocker switch offers a compact thermal circuit breaker in a rocker switch designby incorporating the m1 thermal circuit breaker into your system you can provide overload protection and onoff switching using just a single component this provides significant cost savings over using a separate rocker switch and circuit breaker combination techna m105b1br3 5a rocker switch circuit breaker