With a 400 PSI maximum working pressure and a 4-inch shell diameter

Critical Safety Protection: Prevents hazardous overheating conditions by interrupting the burner circuit if airflow is restricted

and Square D 8910DP41V14

and inert gas service

compatible with most industrial furnace control boards

Modine 5H0749330003 Relay 320720-756 With a 400 PSI maximumThe Modine 5H0749330003 Relay is a heavy duty, OEM spec electromagnetic switch engineered for 120V heating systems. This industrial unit heater relay serves as the primary interface between low power control signals and high power blower or burner circuits, ensuring seamless ignition and fan sequencing. As a genuine Modine replacement part, it is listed under cross reference R4222D1039, maintaining the precise electrical tolerances required for Modine