The A9F04120 is an electronic overcurrent relay manufactured by Schneider Electric. It is designed for use in a wide variety of applications including motor control, lighting control, and electrical panel switching. The device features an adjustable rating dial with a range from 1.2 to 12A, a single-pole auxiliary contact, and a contact life expectancy of 300,000 operations. This device is rated for 30V with a 2.5A sensitivity, and it is UL, CSA, and IEC approved.