The CA4-B0-24-630-121-C is a C-Series hydraulic-magnetic circuit breaker designed for overcurrent protection in demanding environments. This four-pole model features a handle actuator for each pole and a series trip (current) circuit. It is rated for 30A and is designed for 50/60Hz AC systems with a medium time delay characteristic. The breaker is configured without an auxiliary switch and uses a 6-32 threaded insert for panel mounting. With UL Recognized and CSA Accepted approvals, it is well-suited for applications in marine, telecom, military, and renewable energy systems where reliable performance is critical.