Fuse Breaker ATO/ATC - Auto reset 3A-50A

Resettable Fuse Breaker ATO/ATC | Auto Reset

Replace blown ATO/ATC fuses with smart resettable blade fuse protection. This fuse breaker fits standard fuse holders and automatically resets after faults clear. Perfect for boats where accessing fuse boxes is difficult.

Product Overview

The marine fuse breaker uses thermal protection fuse technology in a standard blade fuse (standard size) format. This self-resetting fuse eliminates the need to carry spare fuses or climb into tight spaces to replace blown protection. Works with 12V and 24V boat systems. Compatible with BAYWATT waterproof fuse holders and manual reset fuse breakers.

Key Features

• Automatic fuse reset - power comes back when the problem is fixed
• Standard ATO/ATC size - fits existing fuse holders perfectly
• Available ratings: 3A, 5A, 10A, 15A, 20A, 25A, 30A with color codes
• Waterproof design - safe for marine use
• 12v circuit breaker fuse and 24v circuit breaker fuse options
• Engine room safe - meets ignition protection standards
• Built tough - handles boat vibration, salt spray, and heat
• Easy installation - direct replacement for regular fuses

How It Works

Type I breaker (auto reset) technology senses heat from overloads. When too much current flows, the thermal protection fuse opens the circuit. After the fault clears and the temperature drops, it automatically closes again. No buttons to press, no fuses to replace.

Applications

Critical Systems

• Bilge pumps - keep working after temporary overloads
• Navigation lights - stay on for safety compliance
• Engine room fans - continuous cooling without maintenance

Daily Use Equipment

• Freshwater pumps - no more pump failures from brief overloads
• Deck wash systems - handles motor starting surges
• Refrigerators - protect food during long trips
• Electronics - GPS, fish finders, autopilot stay powered

Comfort Systems

• Cabin lights - reliable lighting without fuse box access
• Ventilation fans - continuous air circulation
• Windlass - overload protection during anchoring
• Bow thrusters - prevents shutdowns during docking

Choosing Auto vs Manual Reset

Type I Breaker (Auto Reset) - Best for:

• Hard-to-reach locations (bilge, engine compartment, behind garnments, inside the harness)
• Systems that must stay running (bilge pumps, instruments, refrigeration)
• Equipment with occasional brief overloads (working lights, DC chargers)

Type III Breaker (Manual Reset) - Best for:

• Expensive electronics needing a controlled restart
• Systems where you want to know about problems
• Navigation and safety equipment (see manual reset version)

Technical Details

Protection Method: The resettable fuse blade type monitors current flow through a thermal protection fuse element. During short circuits or overloads, it switches to protect the electrical circuit and connected equipment.

• Response Time: Overloads: 10-30 seconds (allows motor starting) / Short circuits: Instant protection
• Voltage: Works with 12V circuit breaker fuse and 24V circuit breaker fuse systems
• Temperature Range: -20°C to +70°C with heat compensation
• Durability: Built for marine conditions - salt spray, vibration, temperature changes

Installation

Simple Replacement: Pull out old fuse, push in automatic reset breaker. Fits standard fuse blocks and waterproof fuse holders. Wiring: Use marine-grade connections with soldering sleeves or heat shrink sleeves with glue for water protection.

Why Choose Resettable Over Standard Fuses

• Convenience: No spare fuses needed. No crawling to fuse panels during bad weather.
• Reliability: Self-resetting fuse technology means equipment comes back online automatically.
• Cost Savings: Initial cost offset by no replacement fuses and fewer service calls.
• Safety: Systems like bilge pumps stay protected even when you're not aboard.

System Benefits

• For Boat Owners: Less maintenance, more reliable systems, peace of mind knowing critical equipment stays protected.
• For Installers: Fewer callback visits, happier customers, professional installation quality.
• For System Designers: Predictable protection characteristics, space-saving design, multiple voltage options.

Environmental Protection

• Salt spray corrosion
• Constant vibration from engines and waves
• Temperature swings from engine heat and cold weather
• High humidity in bilge areas
• Shock from rough seas

Common Applications by Boat Type

• Sailboats: Navigation lights, autopilot, wind instruments, electric winches
• Powerboats: Bilge pumps, trim tabs, electronics, deck wash, air conditioning
• Fishing Boats: Fish finders, radios, bait pumps, deck lighting, refrigeration
• Yachts: Bow thrusters, windlass, galley equipment, entertainment systems

Standards and Compliance

• SAE J1171 (Ignition Protection)
• UL1500 (Marine Circuit Breakers)
• ABYC electrical standards
• CE marking for European use
• Coast Guard accepted for commercial vessels

What's Included

Each pack contains 5 automatic fuse reset breakers of the same amp rating. Color-coded for easy identification and inventory management.

Professional Use

Marine electricians, boat builders, and yacht service technicians choose those resettable blade fuse ato/atc breakers for reliable protection that reduces service calls and improves customer satisfaction.

Installation Tips

• Check amp rating matches equipment needs
• Ensure proper ventilation around thermal protection fuse
• Use marine-grade connections for water protection
• Label circuits clearly for future service
• Keep some manual reset breakers for sensitive electronics

Comparison: Auto Reset vs Standard Fuses

• Standard Fuses: Cheap to buy, must replace when blown, can leave you stranded
• Auto Reset: Higher initial cost, self-restoring, continuous protection, reduced maintenance

The automatic reset breaker pays for itself through improved reliability and reduced service needs. This marine fuse breaker technology transforms boat electrical systems from a maintenance headache into a reliable, self-managing network that enhances your boating experience.