These requirements cover heat detecting circuit-interrupters (HDCI) intended for use in dehumidifiers@ room air conditioners and other refrigeration equipment. They incorporate the functionality of a leakage current detector interrupter@ and are intended to interrupt power to the protected device when any of the following conditions occur: a) An overheating condition occurs where the HDCI temperature sensor is mounted in the end product@ or b) When leakage currents flowing from the conductors of the end product's power supply cord exceed a predetermined level@ or c) An open circuit occurs in one of the temperature sensor leads of the HDCI temperature sensor. These devices have a maximum rating of 40 A@ and are intended for use on circuits rated 250 Vac maximum. These requirements are intended to be used with the requirements of the Standard for Arc-Fault Circuit-Interrupters@ UL 1699 as these requirements modify and supplement the requirements of that Standard. An HDCI that is also intended to perform other functions@ such as overcurrent protection@ ground-fault circuit-interruption@ surge suppression@ any other similar functions@ or any combination thereof@ shall comply additionally with the requirements of the applicable Standard(s) that cover devices that provide those functions.