The Eaton e-heater controller is an air-cooled, power-electronic converter designed to regulate 48-volts to a catalyst heater element for commercial vehicle emission control applications. The controller can control a total of 200 amps of load current to either one or two independent heating elements.

The e-heater controller regulates and supplies power to the heating coil while ensuring high power quality for the 48-volt vehicle system. This power is provided to a heating coil in the vehicle’s aftertreatment system which actively heats catalyst components, such as the SCR, and helps reach efficient operating temperatures as quickly as possible upon engine start and maintain these temperatures during low load operation resulting in a significant NOx reduction of 75 percent.