ABB Residual Current Circuit Breakers with Overcurrent Protection combine earth leakage, overload, and short-circuit protection in a single compact device. The DSB201M, DSB202M, and DSB204M series provide comprehensive circuit protection for residential, commercial, and industrial applications. Designed to enhance electrical safety and simplify installation, these devices quickly isolate faults while maintaining reliable operation. ABB RCBOs help reduce wiring complexity, improve system protection, and ensure compliance with modern electrical safety standards for critical distribution networks.