Blue Sea 7188 120 Amp Circuit Breaker Surface Mount 285 Series

The Blue Sea 7188 120 Amp Circuit Breaker Surface Mount 285 Series is a critical electrical protection device engineered for military vehicles, tactical power systems, and mission-critical installations where reliable branch circuit protection cannot fail. Built by Blue Sea Systems—a manufacturer trusted across defense, maritime, and industrial sectors—this 120-amp thermal circuit breaker serves as the backbone of secure electrical distribution in high-demand environments. Whether protecting auxiliary power networks in tactical vehicles, securing shore power systems, or safeguarding sensitive equipment installations, this breaker provides the failsafe protection that law enforcement and military operators depend on in the field.

The 285 Series design features a visible reset lever that clearly indicates open (tripped) condition at a glance—essential when rapid diagnostics are required in tactical or emergency scenarios. The "Trip Free" mechanism prevents the lever from being forced closed after a fault condition, ensuring the breaker cannot be bypassed or temporarily held in an unsafe state. This is a drop-in replacement for older 185-series circuit breakers, allowing for straightforward upgrades to existing electrical architectures without complete system redesign. The thermal protection principle responds to sustained overcurrent by automatically interrupting the circuit, protecting wiring and downstream components from damage or fire risk.

Operators working with vehicle electrical systems, generator-fed power distribution, or permanent tactical installations benefit most from this robust 120-amp capacity breaker. The compact surface mount form factor—measuring 5 × 2 × 8 inches and weighing just 0.35 lbs—fits seamlessly into existing panel layouts and retrofit applications. Installation is straightforward for qualified electrical technicians familiar with branch circuit protection; ensure proper wire gauge compatibility with 120-amp rating and verify compatibility with your existing Blue Sea panel or equivalent surface-mount housing before ordering.