The SIEMENS 5SY5403-7CC is a 4-pole miniature circuit breaker rated for 880 V DC and a 10 kA breaking capacity, set with a C-characteristic at 3 A to protect DC circuits from overloads and short circuits. Designed for reliable circuit protection in photovoltaic, battery, or industrial DC installations, it limits fault currents and helps prevent equipment damage and fire risk. Its compact 4-pole format allows protection of multi-conductor DC feeders in a single device, simplifying panel layout and wiring. Use this breaker where dependable overcurrent protection and clear trip characteristics are required.
