Company closure. selling my old stock. Grab yourself a bargain. Brand new in the box. Please see my other listings. The BG CUCRB20A Compact RCBO Circuit Breaker Type a RCD Curve B is a DIN rail-mounted circuit breaker with a residual current detection circuit, suitable for single-phase systems with a current rating of 1-15 A. It is designed for interior use and features an on/off switch for operation. The circuit breaker offers instantaneous tripping characteristics, overcurrent protection, and a trip indicator for added convenience. With screw terminals for electrical connections, this BG circuit breaker is a reliable option for electrical wiring applications in various settings.