Sarja 187 sulavkaitja – 40 A paneelile paigaldatav

The Blue Sea Systems Series 187 circuit breaker is an electrical protection device designed for marine applications. It protects circuits against overcurrent and short circuits, ensuring the safety of onboard equipment and electrical systems.

This specific Blue Sea 187 series circuit breaker has a rated capacity of 40 amperes (40 A). It is designed to protect circuits drawing up to this current.

This circuit breaker is designed for panel mounting. This means it integrates directly into electrical panels or bulkheads, providing a clean installation and easy access to the reset switch.

The thermal protection of the 187 series circuit breaker is provided by a heat-sensitive element that trips the breaker in case of prolonged overcurrent caused by an overload. This protects cables and equipment from overheating and damage.

The "trip-free" design (free-trip) means the circuit breaker cannot be held in the "ON" (run) position if an overload or short-circuit condition persists. Even if the switch is held manually, the circuit breaker will trip to ensure circuit safety and prevent damage to equipment.

After a trip, the 187 series circuit breaker is reset manually. Once the cause of the overload or short circuit has been identified and corrected, simply flip the switch to the "ON" (run) position.

Yes, this circuit breaker is specifically designed for marine environments. Its design and materials are selected to withstand demanding conditions such as humidity, spray, and vibrations, ensuring consistent reliability aboard vessels.

This 40 A circuit breaker is ideal for protecting high-load equipment aboard, such as:

WindlassesBow thrustersInvertersOther high-current-draw equipmentIt provides fast tripping and reset when needed.

For panel installation, this circuit breaker requires a specific cut-out. The exact dimensions of this cut-out are shown in the product’s technical drawing, usually available in the provided documentation or on the product page.

Yes, Blue Sea 187 series circuit breakers are typically ignition protected to SAE J1171 standards. This means they are designed not to produce sparks that could ignite fuel vapors in an engine compartment, which is critical for marine safety.

Yes, as it supports up to 32 V DC, this circuit breaker is compatible with common marine electrical systems of 12 V DC and 24 V DC, provided the circuit current does not exceed 40 amperes.

Main advantages are:

Manual reset: Unlike fuses that require replacement after each trip, this circuit breaker can be reset manually.Reusable protection: It provides continuous protection without needing immediate replacement parts.Increased safety: The "trip-free" function prevents forced reset in case of persistent overload.

This circuit breaker is designed for panel mounting and includes built-in protection suitable for a marine environment. While the front panel is generally splash-resistant (often IP67), installation in a location shielded from direct immersion and excessive impacts is always recommended to extend its service life.

The Blue Sea 187 series circuit breaker is designed to operate reliably across a wide temperature range, typically from -40°C to +85°C. This ensures performance in various marine weather conditions.

Electrical connections on this circuit breaker are typically made using threaded studs (screw terminals) at the rear of the device. It is recommended to use appropriate cable lugs and tighten the nuts to the specified torque to ensure a safe and reliable electrical connection.

While a specific lifespan in years is not always provided, Blue Sea Systems circuit breakers are designed to be highly durable and reliable. Their robustness and resistance to marine conditions ensure a long service life, with numerous trip/reset cycles.