Blue Sea 7143 187 - Series Thermal Circuit Breaker - 90Amp

Enhance your marine electrical system with the 187 Series Thermal Circuit Breaker, specifically designed for surface mount applications on boats and other gasoline-powered vessels. This 90 Amp circuit breaker offers reliable switching and circuit protection, ensuring the safety and efficiency of your onboard electrical components.

Key Features

• Combines switching and circuit protection into a single unit
• Meets SAE J1171 standards for external ignition protection
• Simple, clear operation with a single lever
• "Trip Free" mechanism prevents holding the breaker in the "ON" position during fault conditions
• Waterproof design suitable for marine environments
• Recessed mounting holes for a streamlined installation
• Ample clearance around terminal studs for heavy gauge wire lugs
• Sturdy 5/16" terminals ensure high torque connections
• Large lever with vertical and horizontal positions indicates trip status
• Ignition protected, safe for gasoline-powered boat installations

Technical Specifications

Specification	Details
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 Amperes @ 12 Volts DC 3,000 Amperes @ 24 Volts DC 1,500 Amperes @ 42 Volts DC
Operating Temperature Range	-25°C to +82°C

Additional Specifications

• Amperage: 90A
• Dimensions: 3" H x 5" W x 7" L
• Weight: 0.6 lbs
• UPC: 632085071431

WARNING: This product may contain di(2-ethylhexyl)phthalate (DEHP), a chemical 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.