Power rating: 20, 30, 40, 50, 60, 80, 100, & 120 amps. Red push button to reset. Red arm deploys once circuit is tripped. Water resistant housing. Self testing and manual override. Integrated holes for simple mounting. The mounting screws are not included. It is compact and lightweight. Perfect replacement for fuse holder. The wire input size is 4 gauge and 8 gauge.