Description
Blue Sea 7540 C-Series 5A Rocker Breaker | Boat Supply Store
Safeguard critical marine electrical circuits against overcurrent with the Blue Sea 7540 C-Series Flat Rocker Circuit Breaker. This single-pole unit integrates switching and circuit protection, ideal for applications up to 5A, including inverters, bow thrusters, or windlasses on gasoline-powered vessels where ignition protection is paramount. Engineered with a magnetic hydraulic trip-free mechanism, it offers a robust 3000A @ 120V AC interrupt capacity and operates at a maximum of 240V AC or 48V DC, ensuring reliable performance in demanding marine environments.
Key Features
- Integrated Switching and Protection: Eliminates the need for separate components, simplifying wiring and installation.
- Ignition Protected: Meets UL 1500 standards, ensuring safety on gasoline-powered vessels by preventing ignition of flammable vapors.
- Flush Rocker Actuator: Provides a clean, low-profile installation with clear 'ON' and 'OFF' status indication.
- Trip-Free Design: Guarantees the breaker will trip during an overcurrent event, preventing re-closure and potential damage.
- Color-Coded Actuator: Visual cue of the circuit status, with the color indicating the 'OFF' position for immediate identification.
- High Interrupt Capacity: Rated at 3000A @ 120V AC, capable of safely interrupting significant fault currents.
- Versatile AC/DC Application: Suitable for use in both alternating and direct current marine systems up to specified voltage limits.
- Durable Marine Construction: Built by Blue Sea Systems to withstand the harsh conditions of the marine environment.
Specifications
| Product Specifications | |
|---|---|
| Poles | Single pole |
| Amperage Rating | 5A AC/DC |
| Maximum Voltage (AC) | 240V AC |
| Maximum Voltage (DC) | 48V DC |
| Interrupt Capacity | 3000A @ 120V AC |
| Actuator Style | Flat Rocker |
| Trip Mechanism | Magnetic hydraulic |
| Ignition Protected | Yes (UL 1500) |
| Terminal Type | Stud |
Who This Is For
Marine enthusiasts, boat owners, and marine electricians requiring reliable overcurrent protection and switching for high-draw DC and AC marine systems, particularly those with inverters, bow thrusters, or windlasses, and for installation on gasoline-powered boats.
How It Compares
| Feature | Blue Sea 7540 C-Series 5A Rocker Breaker | Blue Sea Systems 7421 M |
|---|---|---|
| Amperage | 5A AC / 5A DC | 5A, 5A |
| Poles | 1 | 1, 1 |
| Maximum Voltage (AC) | 240V AC | 240V AC, null |
| Maximum Voltage (DC) | 48V DC | 48V DC, 28V DC |
| Actuator Style | Flat Rocker | Contura Rocker, Push Button Reset |
| Ignition Protected | Yes | Yes, Yes |
| Integrated Switching | Yes | Yes, No |
Common Concerns Answered
Are replacement parts readily available for the Blue Sea 7540?
While some users have reported occasional difficulty locating specific replacement parts if lost, the core functionality and reliability of the Blue Sea 7540 are exceptionally high, making it a durable investment for essential marine electrical systems.
Is this 5A breaker sufficient for very high-draw marine applications?
The Blue Sea 7540 is specifically rated at 5A for applications such as controlling smaller pumps, lighting circuits, or specific electronic modules. For significantly higher amperage requirements, such as powering large inverters or multiple high-draw devices simultaneously, a breaker with a higher amperage rating, also available from Blue Sea Systems, would be necessary. Always consult your vessel's electrical schematics and component draw specifications.
Why is the price higher than basic circuit breakers?
The Blue Sea 7540's pricing reflects its specialized marine-grade construction, integrated switching functionality, 'trip-free' design, and crucial ignition protection (UL 1500 certified), features critical for safe and reliable operation in demanding onboard environments, far exceeding the capabilities of non-marine or simpler breakers.
Frequently Asked Questions
What is the maximum voltage rating for the Blue Sea 7540 C-Series Flat Rocker Circuit Breaker?
The Blue Sea 7540 C-Series Flat Rocker Circuit Breaker has a maximum voltage rating of 240V AC and 48V DC.
Can this circuit breaker be used for both AC and DC applications?
Yes, this circuit breaker is rated for both AC and DC applications, with specific maximum voltage ratings of 240V AC and 48V DC, respectively.
What is the interrupt capacity of this breaker?
The Blue Sea 7540 C-Series circuit breaker has an interrupt capacity of 3000A at 120V AC, meaning it can safely interrupt a fault current of that magnitude at that voltage.
Is this circuit breaker ignition protected?
Yes, the Blue Sea 7540 C-Series circuit breaker is ignition protected and meets the UL 1500 standard, making it safe for use on gasoline-powered boats.
What is the purpose of the 'Trip Free' feature on this breaker?
The 'Trip Free' design ensures that the circuit breaker will trip and open the circuit during an overcurrent event, even if the rocker actuator is manually held in the 'ON' position. This prevents damage to the electrical system and potential fire hazards.
