Profile: Portex Technologies is a manufacturer of thermal overload protectors and precision thermal circuit breakers. Our circuit breaker operates on the principle of a bimetallic switch. The current carrying bi-metal strip senses over current and actuates a beryllium copper blade which snaps open the contacts and interrupts the current. After some time delay the bimetal cools down and the contacts snap close. The snap action opening and closing of contacts ensures that there is no sparking during the make and break switching. These contacts are made of solid silver and have a very long life. The outer body is cylindrical in shape and has a small size due to which it can be easily fitted in any device or instrument. It can also be mounted on a PCB. The body is made of solid fiber glass to ensure high strength and rigidity and it is electrically insulated, so there is no chance of current leakage or electrical shock.