Siemens P120 – 20A 1 Pole Molded Case Circuit Breaker Top Pick

Built for older electrical systems, the Siemens P120 delivers 20 amps of thermal-magnetic protection. This single-pole breaker features the unique push-button actuation that defines the classic Pushmatic design. Installs into legacy Bulldog, ITE, Gould, and Siemens Pushmatic load centers using a secure bolt-on connection. It serves as an exact replacement for aging components. Rated for 10 kAIC at 120VAC, this HACR-rated unit ensures reliable overcurrent defense and meets UL 489 standards.