Blue Sea 7317 COTS Military Grade A-Series 50 Amp

The Blue Sea Systems 7317 COTS Military Grade A-Series 50 Amp circuit breaker is a precision-engineered electrical protection device designed to meet military specifications under CFR 46. This 50-amp magnetic hydraulic breaker delivers trip-free operation with a metal toggle actuator, making it the choice for demanding maritime, aerospace, and tactical power distribution systems where reliability under extreme conditions is non-negotiable.

Built for extreme environments, the 7317 operates across a -40°C to 85°C temperature range with 1500A AC and 7500A DC interrupt capacity—critical for systems subjected to thermal shock and high-fault-current scenarios. The dual-pole configuration handles voltages up to 277V AC and 65V DC, accommodating both standard utility feeds and backup power systems. The magnetic hydraulic trip mechanism ensures fast, consistent response without nuisance trips during normal inductive surges, a persistent problem in military vehicle and vessel installations where load switching generates transient overshoot.

This breaker serves mission-critical applications: naval vessels, military ground vehicles, forward operating bases, and tactical communications installations where power circuit integrity directly impacts operational security. The compact 2×2×4-inch footprint accommodates space-constrained electrical panels without sacrificing robust contact geometry. Operators and maintenance personnel value the manual metal toggle for tactile feedback and positive isolation confirmation—essential in blackout troubleshooting scenarios where you cannot rely on indicator lights.

Blue Sea Systems' A-Series breakers represent the standard in military and commercial marine power protection. The COTS (Commercial Off-The-Shelf) designation means availability and compatibility across multiple platforms and procurement channels—reducing supply chain friction for military end-users and contractors managing multi-branch deployments.