The Q120AF Siemens 20 amp 120/240 volt 1 pole plug-on ARC fault breaker is a high-quality electrical component designed for industrial and commercial applications. With a maximum amperage of 20A and a single pole configuration, this circuit breaker from Siemens provides reliable protection for electrical circuits. The plug-on feature makes installation quick and easy, while the ARC fault capability adds an extra layer of safety by detecting and preventing arc faults, which can cause fires if not addressed promptly. This product is a crucial component for ensuring the electrical safety of equipment and systems in various industrial settings.