Premium Siemens / Murray MP120 – 20A 1 Pole Miniature Circuit Breaker

Handling up to 20 amps of current, the Siemens MP120 delivers robust thermal-magnetic protection for residential applications. This single-pole plug-on component is SWD rated for switching fluorescent lighting loads. It installs into classic Murray enclosures, providing a safe maintenance solution for older systems. When a complete panel upgrade occurs, the Q120 serves as the modern replacement. A 10kAIC interrupt rating ensures reliable performance during fault conditions.