Temperature switches are generally used in industry for limiting temperature. They monitor the temperature of machinery and equipment and, for example, switch off machinery if it overheats or switch on a fan to cool the equipment. Temperature switches are generally used in industry for limiting temperature. They monitor the temperature of machinery and equipment and, for example, switch off machinery if it overheats or switch on a fan to cool the equipment. The Temperature switches are designed to suit those applications where controlling is of prime importance than measurement. Temperature switches are snap-acting devices, designed to actuate when the amplitude of temperature of a gas or liquid being monitored, is sensed. When the set point temperature is detected, the switch works to open or close a circuit. This activates the switch and control which in turn improves the safety of the workplace.