The CA3-B0-24-620-121-CG is a C-Series hydraulic-magnetic circuit breaker designed for overcurrent protection in applications requiring higher amperage and voltage handling. This three-pole device is configured with a series trip circuit, a 20A current rating, and a medium time delay for 50/60Hz AC systems. It operates at a maximum application rating of 120/240 VAC, features a handle actuator, and does not include an auxiliary switch. The breaker is designed for panel mounting with 6-32 threaded inserts and is UL489 Listed and CSA Certified, ensuring compliance with safety standards. Its robust construction makes it suitable for demanding environments such as marine, telecom, military, and renewable energy systems.