Eaton CB185P-50-03 Automotive Circuit Breaker - 3 kAIC

With a 50 A amperage rating, the CB185P-50-03 provides targeted protection for DC circuits that routinely draw higher startup or load currents. This reduces the risk of wire insulation damage, panel fires, and costly downtime by stopping faults at the source. Suitable for automotive and commercial vehicle electrical systems operating around 48 Vdc, it fits in standard panel enclosures with minimal adaptation. Its 3 kAIC interrupt rating ensures rapid fault current interruption, limiting arc energy and protecting wiring harnesses downstream. In practice, this translates to smaller gapping between conductors, less collateral damage in short circuits, and easier traceability during fault investigations. The switchable design lets technicians test circuits without removing devices, speeding maintenance checks and reducing spare part consumption. This capability is especially valuable in fleets with frequent diagnostic cycles or hot-swapped modules. Panel mounting supports quick installations on existing boards; the compact footprint (1.9 in L × 2.9 in H × 2.1 in W) minimizes enclosure crowding and simplifies retrofits. RoHS compliance helps procurement teams meet environmental and regulatory expectations across fleets, while the Eaton Bussmann family offers consistent spare parts across vehicles and machines. For additional approvals beyond RoHS, consult the manufacturer. Reliability and documentation considerations are supported by downloadable datasheets and warranty information, ensuring design validation and ongoing serviceability.