Description
Blue Sea 7347 AC/DC Circuit Breaker - 8A | Boat Supply Store
Protecting critical circuits in demanding marine environments is paramount, and this breaker provides robust, integrated AC/DC power management. It functions as both a circuit protector and a switch, rated for 277 Volts AC or 65 Volts DC, and is engineered with a trip-free design to prevent operation during fault conditions, ensuring safety even under extreme electrical loads. This single-pole unit is ideal for installations on offshore fishing vessels or any recreational craft navigating challenging coastal waters where reliable power is non-negotiable.
Key Features
- Combines switching and circuit protection into a single, space-saving device.
- Quick Trip models specifically designed for sensitive electronics protection.
- Trip Free design ensures safety by preventing re-engagement during a fault.
- Meets rigorous ABYC Standards for marine electrical safety.
- Certified to UL 1077, TUV, CE, and CSA standards for global compliance.
- Reliable magnetic hydraulic actuation for precise tripping.
- Durable construction engineered for marine environments.
- 10,000 switch cycles at rated amperage and voltage for long service life.
Specifications
| Product Specifications | |
|---|---|
| Amperage | 8 Amps |
| Voltage AC Max | 277 Volts AC |
| Voltage DC Max | 65 Volts DC |
| Actuation Type | Magnetic Hydraulic |
| Delay Type | Standard |
| Pole Type | Single Pole |
| Switch Cycles | 10,000 |
| Certifications | ABYC, UL 1077, TUV, CE, CSA |
Who This Is For
Marine electricians and boat builders require reliable AC/DC circuit protection and switching for vessel electrical systems, particularly for sensitive electronics. DIY boat owners can also utilize this breaker for dependable power management on their craft.
How It Compares
| Feature | Blue Sea 7347 AC/DC Circuit Breaker - 8A | Competitor |
|---|---|---|
| Amperage | 8 Amp | 10 Amp, 8 Amp |
| Maximum AC Voltage | 277 Volts AC | 277 Volts AC, 120V AC |
| Maximum DC Voltage | 65 Volts DC | 65 Volts DC, 28V DC |
| Circuit Breaker Type | Magnetic Hydraulic - Trip Free | Magnetic Hydraulic - Trip Free, Thermal Magnetic |
| ABYC Standards | Meets | Meets, |
Common Concerns Answered
Is the price higher than standard breakers?
While the initial cost may appear higher than non-marine grade breakers, the Blue Sea 7347 is engineered to meet stringent international marine standards and offers dual AC/DC capability with a reliable trip-free design, ensuring superior safety and longevity for critical onboard electrical systems.
What if my DC system voltage is higher than 65V?
The 65V DC limit is standard for most recreational marine applications. For systems exceeding this rating, separate, higher-voltage DC-rated circuit protection would be required, which this specific model does not accommodate.
Why choose a marine-specific breaker over a general-purpose one?
Marine environments present unique challenges such as vibration, moisture, and potential for corrosive elements. This breaker's construction, certifications (ABYC, UL 1077, CE), and trip-free magnetic hydraulic design are specifically developed to withstand these conditions and provide reliable, safe protection for your vessel's electrical integrity.
Frequently Asked Questions
What is the maximum voltage this circuit breaker can handle for AC and DC applications?
The Blue Sea 7347 is rated for a maximum of 277 Volts AC and 65 Volts DC.
Is this circuit breaker suitable for both AC and DC systems?
Yes, this is a single-pole AC/DC circuit breaker designed to protect circuits in both alternating current and direct current systems.
What certifications does the Blue Sea 7347 circuit breaker hold?
This circuit breaker holds multiple international certifications including ABYC Standards, UL 1077 Recognized, TUV Certified, CE marked, and CSA Certified.
What does 'Trip Free' design mean for this circuit breaker?
A 'Trip Free' design means the circuit breaker cannot be manually held in the ON position during a fault current condition, ensuring it will always interrupt the circuit to prevent damage or fire.
What is the rated switch cycle for this breaker?
The Blue Sea 7347 is rated for 10,000 switch cycles at its rated amperage and voltage, indicating robust durability for repeated operation.
