Hamolar 150A Resettable Circuit Breaker 3-Pack for Car Audio Amps — 12–48V Manual Reset, Push-Button Protection

Hamolar 150A resettable circuit breaker is a manual-reset overcurrent protector designed to safeguard car, marine and RV audio amplifiers and 12–48V DC systems from overloads and short circuits.

Engineered for vehicle and marine electronics, this 3-pack of Hamolar 150 amp push-button breakers replaces inline fuses with a reusable, manual-reset device that can also serve as a kill switch. Rated for 12–48V DC systems and built to operate across a wide temperature range, each breaker comes with wire lugs and copper washers for straightforward installation on amplifiers, winches, trolling motors, and other DC accessories.

How does the Hamolar breaker protect my car audio system?

The breaker interrupts excessive current before sensitive amplifier components overheat or fail. It trips when current exceeds the 150A threshold, preventing wiring damage, battery stress, and potential fire hazards.

• 150 amp trip point suitable for high-power audio amplifiers and amp racks
• Manual push-button reset restores power without replacing fuses
• Stops sustained surges that can damage speaker drivers or amp circuits
• Includes hardware (wire lugs and copper washer) for secure connections

Will this work in marine, RV, and mixed-voltage systems?

Yes — the Hamolar breaker is rated for 12–48V DC, making it compatible with common automotive, marine, and RV electrical systems. Its wide ambient temperature tolerance helps it perform reliably in cabins, engine bays, and outdoor installations.

• Operates across -32 °C to 82 °C (-25 °F to 180 °F)
• Compatible with 12V and 24V platforms and higher-voltage 48V DC setups
• Sealed design reduces vulnerability to vibration and humidity in boats or off-road vehicles
• Useful for trolling motors, winches, and other high-current DC accessories

How do I install and reset the Hamolar 150A circuit breaker?

Installation replaces an inline fuse holder: mount the breaker to a solid surface, connect battery and load leads using the supplied lugs and washers, then torque terminals for a reliable contact. If it trips, press the push-button to reset once the overcurrent condition is resolved.

• Mount using standard hardware; ensure good chassis ground and insulated routing
• Use supplied copper washers and wire lugs for low-resistance connections
• Manual reset eliminates the need for spare fuses and speeds troubleshooting
• Can double as a convenient kill switch for rapid power cut-off

What maintenance and safety steps should I follow?

Periodic inspection of terminal tightness and wiring insulation reduces the chance of false trips or heat buildup. Replace any corroded connectors and keep the breaker accessible so you can quickly reset it after a trip.

• Check terminal torque and wiring integrity every few months
• Keep breaker mounting clear of fuel lines and hot engine components
• Test reset function after installation to confirm proper operation
• Do not attempt to modify the trip rating or internal components

Who is this for: The Hamolar 3-pack of 150A resettable breakers is designed for installers, car-audio enthusiasts, boat owners, RVers, and anyone running high-current DC accessories like amplifiers, trolling motors, or winches. If you want a reusable, easy-to-reset overcurrent protection solution that fits 12–48V systems and performs across a wide temperature range, this product simplifies protection and reduces the need for replaceable fuses.