Blue Sea Systems 187-Series Circuit Breaker, 120A 48VDC

Ensure robust and reliable electrical system protection with the Blue Sea Systems 187-Series Thermal Circuit Breaker. Engineered for demanding marine and automotive environments, this 120 Amp, 48VDC circuit breaker seamlessly integrates switching and advanced circuit protection into a single, compact device. Its ignition-protected design makes it ideal for use in gasoline-powered boats and vehicles, while its waterproof construction ensures long-lasting performance in harsh conditions. Upgrade your system's safety and control today.

Key Benefits & Features:

• High-Current Protection: Rated for 120 Amps and a maximum of 48 Volts DC, providing essential safeguarding for high-power circuits.
• Ignition Protected: Meets SAE J1171 external ignition protection requirements, ensuring safe installation aboard gasoline-powered boats and engines.
• 'Trip Free' Design: Prevents the breaker from being held in the 'ON' position during fault current conditions, enhancing safety and preventing damage.
• Waterproof Durability: Features IP66-rated waterproof construction, offering excellent resistance against heavy seas and wet environments.
• Robust Terminals: Equipped with heavy-duty 5/16" (M8) terminals that provide secure, high-torque connections for heavy gauge wire lugs.
• Effortless Installation: Panel mountable with a self-trimming, round case, allowing for easy and clean installation using a standard hole saw.
• Clear Status Indication: A clear, single lever operation with vertical/horizontal orientation provides immediate visual indication of the circuit's trip status.
• High Interrupt Capacity: Offers significant fault current interruption capabilities, rated at 5,000 Amperes @ 12V DC, 3,000 Amperes @ 24V DC, and 1,500 Amperes @ 48V DC.
• Durable Construction: Crafted from thermoset polyester case material for resilience and a wide operating temperature range of -25°C to +82°C.
• Type III Breaker: Classified as a Type III Switchable / Manual Reset – Trip Free circuit breaker, offering flexible control and reliable protection.