Blue Sea 3118 - SMS Panel Enclosure w/ELCI (50A) and 2 Blanks - 120V AC

The Blue Sea 3118 SMS Panel Enclosure with ELCI (50A) and 2 Blanks – 120V AC is the marine-grade electrical safety solution serious boaters and anglers rely on for shore power protection. Built specifically for Equipment Leakage Circuit Interrupters (ELCI) main circuit breakers, this panel enclosure safeguards your vessel's 120V AC electrical system against potentially dangerous ground faults. Whether you're running a center console, cabin cruiser, or live-aboard, proper electrical protection is non-negotiable when guests, crew, and equipment are aboard.

The 3118 enclosure meets ABYC E-11 standards when paired with an ELCI main circuit breaker—the industry benchmark for recreational marine electrical systems. The panel houses a 50-amp ELCI breaker and includes two blank positions for future expansion or additional circuits, giving you flexibility as your onboard power demands evolve. The compact footprint (9 x 6 x 9 inches) mounts easily in tight quarters typical of marine installations, while the durable construction withstands the salt-air, vibration, and moisture exposure inherent to waterborne environments. Blue Sea Systems engineered this panel for reliability under real-world boating conditions.

Anglers and cruising boaters benefit most from this enclosure during extended trips when shore power connectivity demands robust fault protection for AC circuits—refrigeration, galley appliances, air conditioning, and entertainment systems. Installation requires basic electrical knowledge or a qualified marine electrician; the two blank positions allow you to add branch breakers for individual circuit control. At 3.7 lbs, the panel is lightweight enough for retrofit projects on existing vessels while maintaining the industrial strength required for continuous duty at sea. For anyone serious about electrical safety and ABYC compliance, the Blue Sea 3118 is the standard choice.