The PHOENIX CONTACT part 1019991 is a thermomagnetic device circuit breaker with a single position. It features a screw connection method and can accommodate wire cross sections ranging from 1 mm² to 35 mm² (AWG 18-2). With a width of 17.6 mm, this circuit breaker is designed for DIN rail mounting with a standard 35 mm width. The color of the device is gray, making it suitable for various industrial applications.