Grasslin Intermatic DTAV40 AUTO-Voltage Defrost Control in NEMA 3R enclosureThe Grässlin DTAV40 defrost control is field adjustable for 120V or 240V operation and shall have defrost initiation times settable to the quarter hour via captive trippers at 15 minute intervals. The defrost timer is housed in a NEMA 3R indoor/outdoor plastic enclosure. The relay output is 40A Resistive, 2HP @ 250VAC. Defrost terminations are completed by time and a remote temperature or pressure switch.