AB2-B0-34-450-5D1-C is a two-pole hydraulic-magnetic circuit breaker designed for precise overcurrent protection in compact applications. This breaker features a series trip current circuit configuration with an auxiliary switch (S.P.D.T., 0.093 Q.C. terminal), providing both primary protection and signaling capability. The unit is rated for operation at maximum voltage of 277VAC 50/60 Hz and 80VDC, with current ratings up to 50 amps and a maximum interrupting capacity of 7,500 amps. It is UL 1077 recognized, CSA certified, TUV certified, and VDE certified under EN60934, ensuring compliance with international safety standards. The breaker is ideal for marine, telecom, renewable energy, industrial automation, and commercial applications where reliable electrical protection and compact design are essential.