The PHOENIX CONTACT part 1020042 is a thermomagnetic device circuit breaker with a single position. It features a screw connection method and supports a cross section range of 1 mm² - 35 mm². The AWG range is 18 - 2. With a width of 17.6 mm, it is designed for easy mounting on a DIN rail with a 35 mm width. The color of the circuit breaker is gray, making it suitable for various industrial applications.