The 4230-T110-K0CE-25A is a single-pole thermal-magnetic miniature circuit breaker designed for DIN rail mounting with a rated current of 25 A and AC 240 V voltage rating. It features screw terminals with a maximum tightening torque of 2 Nm, cable cross-section capacity up to 35 mm², and a stripping length of 14 mm, enabling flexible installation in various electrical configurations. The device incorporates a positively trip-free snap action mechanism with characteristic curve C (thermal 1.05–1.30 × IN, magnetic 6.4–9.6 × IN) for reliable switching behavior and high rupture capacity. It meets insulation coordination requirements of overvoltage category III (Uimp 4 kV) with pollution degree 3, IP20 degree of protection, and operates reliably across an ambient temperature range of -35°C to +70°C. The breaker is suitable for protecting cables, motors, generators, transformers, and industrial control systems, with typical operational life of 20,000 cycles and mass of approximately 116 g per pole.