Blue Sea Systems 285-Series Surface Mount Circuit Breaker – 50A
Robust, Waterproof Circuit Protection for Marine Applications
The Blue Sea Systems 285-Series 50A Surface Mount Circuit Breaker offers reliable, medium-duty circuit protection and switching for marine electrical systems. Its waterproof and ignition-protected design ensures safe operation in harsh marine environments, making it ideal for Irish mariners.
Key Features
- Thermal Circuit Breaker: Utilizes a thermally responsive bi-metal blade for precise circuit protection.
- High Interrupt Capacity: Rated at 3,000A @ 48V DC, suitable for primary circuit protection in compliance with ABYC standards.
- Waterproof and Ignition Protected: Meets IP67 and SAE J1171 standards, ensuring safety in wet and hazardous conditions.
- Trip-Free Design: Cannot be held “ON” during fault conditions, enhancing safety.
- Visible Reset Lever: Yellow lever indicates open condition for easy status identification.
Technical Specifications
- Amperage: 50A
- Maximum Voltage: 48V DC
- Mounting: Surface Mount
- Circuit Breaker Type: Thermally responsive bi-metal blade
- Terminal Stud: M6 (accepts 1/4″ ring terminal)
- Terminal Stud Torque: 50 in-lb (5.65 Nm)
- Interrupt Capacity: 3,000A @ 48V DC
- Operating Temperature Range: -40°C to 85°C
- Circuit Breaker Class: Type III – switchable/manual reset, trip-free
- Weight: 0.50 lb (0.23 kg)
Why Choose the Blue Sea Systems 285-Series 50A Circuit Breaker?
For Irish mariners, the Blue Sea Systems 285-Series 50A Circuit Breaker provides dependable circuit protection essential for safe and efficient marine operations. Its waterproof and ignition-protected design ensures long-lasting performance in Ireland’s challenging marine environments.


