The Mini Circuit Breaker (OEM Part No. 3176449204) is an electrical protection spare part compatible with F9-11, Boomer 291, Simba H1354, SIMBA H1254, Boomer 281, Boomer-282, ROC-D7-11, and ROC-D9-11 underground mining equipment. Manufactured with plastic insulation and copper alloy conductive materials, it is categorized as an electrical component used in the electrical protection system at the motor control circuit position. This circuit breaker provides reliable protection against overload and short circuits, supporting safe electrical operation, improving equipment reliability, and minimizing maintenance requirements in harsh mining environments.