Blue Sea Systems 3104 ELCI Main Circuit Breaker 50A 120/240V

The Blue Sea Systems 3104 C-Series ELCI (Equipment Leakage Circuit Interrupter) Main Circuit Breaker provides comprehensive electrical protection for marine shore power systems. This 50-amp breaker delivers both overcurrent and leakage protection in compliance with ABYC E-11 standards, safeguarding your entire vessel's electrical system from the shore power connection point.

Key Features:

• Integrated ELCI protection for whole-boat shore power safety per ABYC E-11 standards
• Triple protection: trips on short circuit, overload, or ground leakage conditions
• UL 1500 ignition protected for safe installation in gasoline engine compartments
• Front panel mount design for clean integration into power distribution panels
• Magnetic hydraulic trip-free mechanism for reliable operation
• 30mA leakage trip sensitivity for enhanced safety

Technical Specifications:

• Amperage Rating: 50A
• Voltage: 120VAC per pole / 240VAC combined
• Poles: 3-pole configuration
• Interrupt Capacity: 5,000A
• Circuit Breaker Type: Magnetic hydraulic, trip-free
• Actuator Style: Flat rocker
• Operating Temperature Range: -35°C to 66°C (-31°F to 151°F)
• Leakage Trip Threshold: 30mA
• Ignition Protection: Yes, meets UL 1500 requirements

This main breaker is designed for marine applications where reliable overcurrent and ground fault protection are critical. The ELCI functionality continuously monitors for dangerous leakage current that could indicate deteriorating insulation or ground faults, providing an essential layer of safety beyond standard circuit protection.