CA3-B0-24-630-121-CG is a three-pole hydraulic-magnetic circuit breaker designed for compact, high-reliability overcurrent protection in industrial and commercial applications. The breaker is rated for 30 amperes at 24 VDC with series trip (current) protection and features a recessed off-rocker actuator with 6-32 x 0.195 inch mounting hardware. It employs a unique arc chute design that enables high interrupting capacity and reliable performance across demanding environments including marine, datacom/telecom, renewable energy, and industrial automation systems. The compact form factor combined with robust hydraulic-magnetic trip mechanism makes it suitable for applications requiring dependable protection without auxiliary switching functions.