ACNM5112SAZ is a sealed, high heat-resistant middle load relay designed for automotive smart junction box applications, featuring a 1 Form C contact arrangement with surface-mount terminals. The relay is rated for 12V DC coil voltage with a maximum 30A load switching capacity, making it suitable for high-capacity switching operations in compact spaces. It operates over an ambient temperature range of -40°C to +110°C and includes tape and reel packing with normal N.O. terminal direction in pull-out direction. The relay demonstrates excellent electrical life performance with minimal contact welding or miscontact issues across extended operation cycles. Typical applications include defogger, seat heater, head lamp, fog lamp, and fan motor control in automotive systems.