DC-rated MCB for 220 V circuits
The Siemens SENTRON 5SL5104-7RC is a 1-pole miniature circuit breaker rated for 4 A at 220 V DC with a C tripping characteristic and 10 kA breaking capacity. This is a DC-specific variant — the operating voltage is DC only, not AC, so it's the right pick for DC distribution panels, telecom power supplies, or solar combiner boxes where you need overcurrent protection on a 220 V DC bus.
Environmental range and pollution rating
The product designation explicitly lists suitability for residential buildings/infrastructure, so it's not intended for heavy industrial motor circuits but fits commercial lighting panels, HVAC disconnects, and building power distribution.
