Description
Blue Sea 7066 20A Low Profile Circuit Breaker 2-Pack | Boat Supply Store
This Blue Sea Systems 20 Amp circuit breaker offers a significant upgrade over standard ATO/ATC fuses by providing a manually resettable, thermal-trip protection mechanism for DC electrical systems up to 28V DC. With a robust interrupt capacity of 2000A at 28V DC, it ensures reliable safety for essential boat electronics. Designed as a direct plug-in replacement for common blade fuses, it simplifies upgrades for wiring systems found on center console fishing boats or cruising yachts operating in saltwater environments.
Key Features
- Direct replacement for ATO and ATC blade style fuses
- Manually resettable push-button for immediate restoration of power
- ABYC compliant circuit protection
- Compatible with Water-Resistant ST-Blade Fuse Block when cover is secured
- Compatible with all other ST-Blade Fuse blocks
- 20 Amp rating for specific circuit loads
- 2000A @ 28V DC interrupt capacity for superior fault handling
- Thermal Trip, Manual Reset circuit breaker type for enhanced safety
Specifications
| Product Specifications | |
|---|---|
| Brand | Blue Sea Systems |
| Model | 7066 |
| Type | Low Profile Circuit Breaker |
| Style | ATO/ATC |
| Amperage Rating | 20 Amp |
| Voltage Rating | 28V DC Maximum |
| Interrupt Capacity | 2000A @ 28V DC |
| Reset Type | Manual Push-Button |
| Operating Temperature Range | -30°C to 77°C |
| Number of Poles | 1 |
| Pack Size | 2 |
Who This Is For
Marine enthusiasts and boat owners seeking a more reliable and convenient electrical protection solution will find this breaker ideal. It is specifically designed for DIYers who need to replace standard ATO/ATC fuses with a resettable and safer alternative in their vessel's DC electrical system.
How It Compares
| Feature | Blue Sea 7066 20A Low Profile Circuit Breaker 2-Pack | Competitor |
|---|---|---|
| Type | Low Profile Circuit Breaker | ATO/ATC Blade Fuse |
| Reset Type | Manual Push Button Reset | Non-resettable |
| Amperage | 20 Amp | 20 Amp |
| Maximum Voltage | 28V DC | 32V DC |
| Interrupt Capacity | 2000A @ 28V DC | 1000A @ 32V DC |
Common Concerns Answered
Why is this circuit breaker more expensive than a standard fuse?
While the initial purchase price is higher than a single-use fuse, this circuit breaker offers significant long-term value through its resettable functionality, eliminating the need for repeated fuse replacements after a trip. Its enhanced safety features and robust design also contribute to its cost.
I'm unfamiliar with circuit breakers versus fuses; what's the key difference?
A fuse is a sacrificial device that melts and must be replaced when an overcurrent occurs, whereas a circuit breaker is a reusable device that can be manually reset after an overcurrent event, providing a more convenient and economical solution for electrical protection.
Will the higher cost impact my budget significantly?
Consider the total cost of ownership; replacing multiple blown fuses can quickly exceed the upfront investment in a resettable circuit breaker. This breaker's durability and convenience provide superior value over time for critical marine electrical circuits.
Frequently Asked Questions
What is the difference between a low-profile circuit breaker and a standard ATO/ATC fuse?
A low-profile circuit breaker, like the Blue Sea 7066, is designed to fit into the same footprint as a standard ATO/ATC fuse but incorporates a thermal-trip mechanism and a manual push-button reset, allowing it to be reused after an overcurrent event, unlike a fuse which must be replaced.
Can this circuit breaker be used in a marine environment?
Yes, this Blue Sea Systems circuit breaker is specifically designed for marine use, meeting ABYC circuit protection requirements and operating within a wide temperature range of -30°C to 77°C.
What is the maximum voltage this circuit breaker can handle?
The Blue Sea 7066 circuit breaker is rated for a maximum voltage of 28V DC, making it suitable for typical 12V and 24V DC marine electrical systems.
How do I reset this circuit breaker if it trips?
To reset the circuit breaker, simply press the button on the front of the unit. If the overcurrent condition has been cleared, the circuit will be re-established.
Is this circuit breaker compatible with all Blue Sea ST-Blade fuse blocks?
Yes, this circuit breaker is compatible with all Blue Sea ST-Blade fuse blocks. For the Water-Resistant ST-Blade Fuse Block, ensure the cover is secured for proper compatibility and protection.
