The Siemens B120 is a 20 Amp single-pole circuit breaker designed for residential and light commercial applications. It operates at 120 volts and is compatible with Siemens load centers and panelboards. This breaker features a thermal-magnetic trip function, offering reliable protection against both overloads and short circuits. Its Type B classification ensures quick response to faults, enhancing circuit safety. The plug-in design allows for fast, secure installation without the need for special tools. UL listed and built to meet rigorous quality standards, the B120 is a dependable choice for branch circuit protection. It is ideal for use in lighting circuits, outlets, and other general-purpose applications.