Newmar 40 Amp Single Pole Breaker W/ Black Throw

The Newmar 40 Amp Single Pole Breaker W/ Black Throw is a critical electrical protection device engineered for marine, RV, and off-grid power systems where reliable circuit isolation is non-negotiable. Designed to meet USCG requirements and suited for both AC and DC applications, this breaker serves operators who demand UL recognition and CSA listing compliance in demanding environments. Whether you're outfitting a tactical mobile command center, expedition vehicle, or marine platform, this single-pole breaker provides the dependable fault protection necessary for mission-critical electrical infrastructure.

Built to Newmar's exacting standards, the 40-amp breaker features a black throw handle for positive, tactile operation and clear visual indication of circuit status—essential when performing rapid system diagnostics in low-light or field conditions. The single-pole configuration handles one live conductor and neutral, making it ideal for 120-volt circuits or split-phase applications in distributed power systems. Its universal fit design works seamlessly with all Newmar electrical panels while maintaining cross-compatibility with most competing brands, eliminating the need for costly panel upgrades during retrofit or expansion installations.

Field personnel, expedition teams, and systems integrators benefit from Newmar's proven reliability in harsh operating conditions where electrical failures cascade into mission failure. Installation is straightforward—the breaker seats directly into compatible Newmar panels and integrates with standard DIN-rail architectures. At just 1 lb, it contributes minimal weight to power distribution assemblies while delivering the surge protection and load-shedding capability that sustains long-duration field operations and ensures crew safety in isolated or austere environments.