Blue Sea 7043 187 - Series Thermal Circuit Breaker - 90Amp

Enhance the safety and efficiency of your marine electrical system with our 187 Series 90 Amp Thermal Circuit Breaker, designed specifically for panel mount applications on boats and marine vessels. Engineered for reliability in harsh marine environments, this breaker provides seamless switching and robust circuit protection, ensuring uninterrupted power to your critical onboard equipment.

Key Features

• Integrates switching and circuit protection into one compact device, simplifying installation
• Components meet SAE J1171 external ignition protection standards, ensuring safety in explosive atmospheres
• Easy-to-use single lever operation with clear trip indication
• "Trip Free" design prevents the breaker from remaining "ON" during fault conditions, enhancing safety
• Waterproof construction to withstand marine conditions and prevent corrosion
• Recessed mounting holes for a clean and professional installation
• Self-trimming case design eliminates the necessity for additional mounting panels or trim bezels
• Round case facilitates straightforward installation using a standard-sized hole saw
• Ample clearance around terminal studs to accommodate heavy gauge wire lugs, ensuring secure connections
• Durable 5/16” terminals provide high torque, reliable connections for demanding marine applications
• Large lever available in both vertical and horizontal orientations to clearly indicate trip status at a glance
• Ignition protected, making it safe for installation on gasoline-powered boats, reducing the risk of accidental ignition

Technical Specifications

Specification	Details
Model Number	7043
Amperage	90 Amp
Circuit Breaker Class	Type III - Switchable / Manual Reset - Trip Free
Type	Thermally Responsive Bi-Metal Blade
Case Material	Thermoset Polyester
Voltage Rating	Up to 48 Volts DC
Interrupt Rating	5,000 Amps @ 12 Volts DC 3,000 Amps @ 24 Volts DC 1,500 Amps @ 42 Volts DC
Operating Temperature Range	-25°C to +82°C
Dimensions	3" H x 5" W x 8" L
Weight	0.3 lbs
UPC	632085070434

Compliance and Safety

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit P65Warnings.ca.gov.

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.