285 Series Circuit Breaker - Surface Mount 150 A

The Blue Sea Systems Series 285 circuit breaker is an electrical circuit protection device designed specifically for marine environments. It protects equipment from overloads and short circuits by automatically cutting power when current exceeds its rated 150 A. It serves as an alternative to traditional fuses, offering manual reset.

The primary function of this circuit breaker is to protect marine electrical circuits from damage caused by overcurrents (overloads) and short circuits. In the event of a fault, it interrupts the current flow, thereby preventing risks of fire, cable degradation, and damage to connected equipment. Once the issue is resolved, it can be reset manually.

This Blue Sea Systems Series 285 circuit breaker has a nominal current rating of 150 amperes (150 A). This means it is designed to protect circuits where the normal current does not exceed this value and will trip if the current exceeds it in a hazardous manner.

The main advantages of this circuit breaker compared to traditional fuses are:

Quick reset: After tripping, it can be reset manually with a simple button press, without requiring the replacement of a part.

Cost savings: No need to carry spare fuses on board.

Enhanced safety: It provides reliable protection against overloads and short circuits, and many models are ignition-protected for use in engine compartments.

Yes, the Blue Sea Systems 285 series circuit breaker is specifically designed to withstand demanding marine environments. It is made from corrosion-resistant materials and often features protection against water spray and dust (typically rated IP67), making it suitable for use aboard vessels.

This Blue Sea Systems 285 series circuit breaker is designed to operate with electrical systems up to a maximum voltage of 48 volts DC.

Yes, the Blue Sea Systems 285 Series circuit breaker is ignition protected to SAE J1171 standards. This means it is designed not to emit sparks or excessive heat that could ignite fuel vapors or other flammable gases, making it safe for installation in engine compartments.

The interrupting rating (AIC - Ampere Interrupting Capacity) of this 285 series circuit breaker is 3000 amperes at 48 volts DC. This value indicates the maximum current it can safely interrupt in the event of a short circuit without being damaged.

This circuit breaker is of the manual reset type. After tripping due to overload or short circuit, it must be manually reset by pressing its reset button.

The exact dimensions of this circuit breaker are available in the technical drawing (see the product's technical detail image). It is designed for surface mounting and its dimensions are optimized for easy integration in various marine environments.

This circuit breaker is designed for surface mounting. It must be fixed to a flat surface using screws, ensuring the terminals are accessible for wiring. It is important to consult the installation manual for specific drilling and fastening details.

For installing this circuit breaker, you will typically need the following tools:

A screwdriver (suitable for mounting screws and terminals)A crimping tool for wiring lugsA torque wrench to tighten terminal nuts to the recommended torqueA multimeter to check continuity and voltage (optional but recommended)A drill and drill bits if you need to create new mounting holes.

For a 150 A circuit breaker, it is essential to use cables with a large cross-section, suitable for the maximum current of the circuit and its length, to avoid excessive voltage drops and overheating. It is recommended to consult ABYC (American Boat and Yacht Council) standards or local marine wiring regulations to determine the appropriate cable size (typically 1/0 AWG or larger for 150 A, depending on length and temperature).

Yes, when wiring, it is critical to respect polarity (if indicated), ensure all connections are clean and torqued to the manufacturer's recommended value to avoid excessive resistance and overheating. Use high-quality marine-grade crimp terminals and protect connections with heat-shrink tubing if needed. Always disconnect the power source before starting wiring.

Yes, this circuit breaker can be installed in an engine compartment because it is spark-proof (compliant with SAE J1171 standard). This feature ensures it will not generate sparks that could ignite fuel vapors, which is critical for safety in these areas.

Yes, this circuit breaker is compatible with 12V and 24V DC marine electrical systems. Its maximum supported voltage is 48V DC, making it suitable for these common onboard boat voltages.

This circuit breaker is ideal for marine applications requiring high-current circuit protection. It is commonly used to protect main circuits, battery chargers, power inverters, electric winches, bow thrusters, or other high-current consumption onboard equipment.

Yes, this 150 A circuit breaker is perfectly suited to protect a battery charger, provided the charger’s maximum output current does not exceed 150 A and the system voltage is compatible (up to 48 V DC). It provides reliable protection against overloads that may occur during the charging process.

Yes, as part of the Blue Sea Systems range, this circuit breaker is designed to integrate seamlessly with other brand products such as busbars, distribution panels, and battery management systems to build a consistent and reliable marine electrical system.

Yes, Blue Sea Systems products are renowned for their quality and reliability. This circuit breaker is covered by the manufacturer’s standard warranty, which attests to its compliance with manufacturing standards and the absence of material or manufacturing defects.