Siemens 5SX23-C10 Circuit Breaker

Siemens 5SX23-C10 is a three-pole, DIN-rail-mounted molded-case circuit breaker rated for 400 V AC and 10 A, designed to protect industrial control panels and three-phase distribution circuits. It delivers a 6 kA short-circuit breaking capacity at 400 V and employs a C-curve trip characteristic, making it suitable for circuits with moderate inrush such as small motors, pumps, and conveyors. As part of Siemens’ 5SX2 family, the device is intended for panel architectures that accept 3-pole 10 A MCCBs and is quick to install on a standard DIN rail for secure enclosure integration. Typical applications include motor protection on 3-phase loads, machine controllers, and other equipment operating within 400 V AC systems, offering reliable overcurrent protection and compatibility with Siemens protection schemes in industrial environments.