Siemens 5SX2120-7 is a 1-pole miniature circuit breaker rated for 20 A at 230/400 V AC with a C-trip characteristic, designed to provide overcurrent protection for low-volume electrical circuits. It offers a 6 kA short-circuit current rating and is part of Siemens’ 5SX2 family of circuit breakers. This model is specified as 1-pole, 20 A, 230/400 V, C, with a 6 kA interrupt capacity, making it suitable for protecting branch circuits in residential or light commercial installations where reliable protection is required.
