The 187-Series Thermal Circuit Breaker is an essential component for marine and boating electrical systems, providing reliable circuit protection and seamless switching in a single, robust device. Designed to withstand the harsh marine environment, it ensures the safety and efficiency of your vessel's electrical infrastructure.

Key Features

• Integrates switching and circuit protection for streamlined electrical management
• Compliant with SAE J1171 standards for external ignition protection
• Easy-to-use single lever operation for quick control
• "Trip Free" mechanism prevents the breaker from being held "ON" during fault conditions
• Waterproof construction suitable for marine applications
• Recessed mounting holes for a clean and professional panel appearance
• Self-trimming case design eliminates the need for additional mounting panels or trim bezels
• Round case allows for easy installation using standard hole saws
• Spacious clearance around terminal studs accommodates heavy gauge wire lugs
• Durable 5/16" terminals ensure high torque connections for secure wiring
• Large lever available in vertical or horizontal orientation to indicate trip status clearly
• Ignition protected, making it safe for installation on gasoline-powered boats

Technical Specifications

Attribute	Details
Circuit Breaker Class:	Type III - Switchable / Manual Reset - Trip Free
Type:	Thermally Responsive Bi-Metal Blade
Case Material:	Thermoset Polyester
Voltage Rating:	48 Volts DC Maximum
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: 25A
• Box Dimensions: 4" H x 5" W x 7" L
• Weight: 0.5 lbs
• UPC: 632085070359

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.