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

The Blue Sea 7043 187-Series Thermal Circuit Breaker rated at 90 amps is an essential marine-grade electrical protection system for serious boaters and anglers operating in harsh saltwater and freshwater environments. This breaker is designed to safeguard your vessel's critical power distribution from dangerous overloads, short circuits, and equipment failures, ensuring reliability when you are far from shore.

Built by Blue Sea Systems, a leader in marine electrical safety for over four decades, this thermal circuit breaker employs a bimetallic strip design that responds instantly to current spikes, tripping before your wiring harness overheats or ignites. The 90-amp rating makes it ideal for protecting primary distribution panels and main engine circuits, providing critical functionality when you need to regain power quickly on the water.

Anglers upgrading aging electrical systems or boat builders specifying new installations will find this breaker to be a reliable choice. Unlike older blade fuses that blow without warning and require constant replacement, the 187-Series breaker can be reset immediately once the fault is cleared, making it a practical solution for maintaining power in challenging conditions.