Pollak 54-959 Mini-Style 20 Amp Circuit Breaker – Type II Modified Reset (Paccar HD 8)

High-Performance Protection for Paccar, Peterbilt, and Kenworth Systems

The Pollak 54-959 is a heavy-duty 20 Amp circuit breaker designed in the space-saving Mini-blade (ATM) footprint. Engineered specifically to meet the rigorous electrical demands of Paccar HD 8 series vehicles, this breaker is the professional choice for replacing standard 20A mini-fuses with a more reliable, resettable solution.

Type II Modified Reset: The Safe Professional Choice

Protect your truck's sophisticated electronic control units (ECUs) and wiring with Type II Modified Reset technology. Unlike Type I breakers that cycle on and off—potentially leading to cumulative heat damage—the 54-959 trips and stays open as long as the circuit remains powered. It will only reset once the ignition is turned off or power is disconnected. This "non-cycling" safety feature is critical for troubleshooting and preventing fire hazards during persistent short circuits.

Built for the Rigors of the Road

Whether it’s a long-haul Kenworth or a vocational Peterbilt, the 54-959 is built to withstand extreme vibration and thermal shifts. Its rugged construction ensures it won't "nuisance trip" like lower-quality alternatives, making it an essential component for fleet uptime and electrical reliability.