The HCR-1 Series general purpose switching relay consist of double-pole double-throw, double-pole single-throw normally open with a rating of 30 amperes. Relays control higher-current circuits through a low-power signal. An electro-magnetic current actuates the relay, creating a closed circuit within the device. General purpose relays are used in applications including HVAC systems, and standby power supplies. HCR-1 Series relay are compliant with the A2L refrigerant requirement of UL Category Control Number (CCN) LZGH2/ LZGH8 for Annex JJ of UL 60335-2-40.