The McCormick 6524989M91 Circuit Breaker is a genuine OEM electrical component designed for reliable circuit protection in various McCormick and Massey Ferguson agricultural machines. This essential part ensures the safe operation of electrical systems by preventing overcurrent damage. It is compatible with McCormick CX, MC, MTX, and XTX series, as well as numerous Massey Ferguson tractor models including the 3000, 4200, 4300, 6100, 6200, 8100, and 8200 series. Cross-referenced with OEM part number 3613042M91, this circuit breaker provides precise fit and performance.