The 4230-T120-K0BE-5A is a double-pole, thermal-magnetic miniature circuit breaker designed for overcurrent protection. It has a current rating of 5A and features a 'B' characteristic curve, defined by a thermal trip between 1.05 and 1.30 times the rated current and a magnetic trip between 3.2 and 4.8 times the rated current. This DIN rail mountable device offers a high rupture capacity of 10,000A (Icu) per IEC/EN 60947-2 and operates reliably in ambient temperatures from -35°C to +70°C. Equipped with screw terminals for secure connections, it is ideal for protecting cables, motors, industrial process control systems, and telecommunications equipment.