Blue Sea C-Series ELCI Main Circuit Breaker - Double Pole 120V AC 50A

The Blue Sea C-Series ELCI Main Circuit Breaker — Double Pole 120V AC 50A is a marine-grade electrical protection device designed for whole-boat shore power installations. This circuit breaker combines over-current protection with ground-fault detection in a single unit, meeting ABYC E-11 standards for boat electrical systems and UL 1500 external ignition protection requirements. The 50-amp rating handles typical residential shore power connections while the double-pole design ensures protection across both legs of the 120V AC supply.

The breaker trips automatically on short circuit, overload, or leakage to ground—three distinct fault conditions that address the primary electrical hazards in marine environments. Front-panel mounting allows integration into a power distribution panel without extensive rewiring, making it suitable for retrofit installations on existing vessels. The rugged construction handles the corrosive salt-air environment typical of coastal and offshore operations, with materials and design specifically engineered for marine duty.

This unit is essential for boaters operating in saltwater environments where galvanic corrosion and moisture pose constant threats to electrical systems. The combination of over-current and leakage protection in a single breaker simplifies panel design while ensuring comprehensive safety coverage. Vessel owners upgrading shore power systems, retrofitting older boats, or replacing failed breakers will find the C-Series ELCI delivers both regulatory compliance and genuine fault protection in harsh marine conditions.

Blue Sea Systems is recognized in the marine electrical market for products meeting or exceeding ABYC standards. The C-Series line represents the company's mid-range protection offerings, balancing comprehensive safety features with practical installation requirements for recreational and commercial marine applications.