Description
Blue Sea 7046 120A Thermal Breaker & Switch | Boat Supply Store
Navigate electrical system protection with the Blue Sea 7046 187-Series Thermal Circuit Breaker, engineered for robust overcurrent defense and integrated manual switching. This unit safeguards 12V, 24V, or 42V DC circuits with a substantial 5000A @ 12V DC interrupt rating, ensuring reliable operation in demanding marine environments. Its SAE J1171 ignition protection makes it critically important for gasoline-powered vessels operating on waterways like Lake Conroe.
Key Features
- Integrated Switching simplifies panel layouts by combining circuit protection and manual control.
- Ignition Protected SAE J1171 compliance ensures safe operation in gasoline-fueled engine compartments.
- Trip-Free Design guarantees the breaker will trip and cannot be held closed against an overload.
- Waterproof Construction provides durability and reliable performance in wet marine conditions.
- Manual Reset allows for straightforward restoration of power after a fault is cleared.
- Robust Terminals feature large 5/16" studs for secure, high-amperage connections.
- Clear Lever Indication offers immediate visual status of tripped or reset position.
- Self-Trimming Case facilitates a clean, professional panel installation.
Specifications
| Product Specifications | |
|---|---|
| Amperage Rating | 120 Amp |
| Series | 187-Series |
| Type | Type III (Switchable/Manual Reset/Trip Free) |
| Case Material | Thermoset Polyester |
| Maximum Voltage | 48V DC |
| Interrupt Rating (12V DC) | 5000A |
| Operating Temperature | -25°C to +82°C |
| Ignition Protection | SAE J1171 |
| Waterproof | Yes |
| Terminal Size | 5/16" |
Who This Is For
This circuit breaker is designed for marine enthusiasts, boat owners, and marine electricians who require dependable, integrated switching and overcurrent protection for 12V, 24V, or 42V DC electrical systems. It is particularly critical for gasoline-powered vessels necessitating ignition protection as per SAE J1171 standards.
How It Compares
| Feature | Blue Sea 7046 120A Thermal Breaker & Switch | Blue Sea Systems 7045 187 |
|---|---|---|
| Amperage Rating | 120 Amp | 100 Amp, 100 Amp |
| Max Voltage Rating | 48 Volts DC | 48 Volts DC, 12-24 VDC |
| Interrupt Rating (12V DC) | 5,000 Amperes | 5,000 Amperes, 2,500 Amperes |
| Ignition Protection | Yes (SAE J1171) | Yes (SAE J1171), Yes |
| Trip Free Design | Yes | Yes, Yes |
| Waterproof | Yes | Yes, Yes |
| Case Type | Thermoset Polyester | Thermoset Polyester, null |
| Mounting | Panel Mount (Recessed, Self-trimming) | Panel Mount (Recessed, Self-trimming), Panel Mount |
Common Concerns Answered
Is this circuit breaker a good value despite its higher price?
While the initial cost may exceed basic breakers, the Blue Sea 7046 integrates both switching and 120A circuit protection, features SAE J1171 ignition protection, and offers a trip-free design and waterproof construction. These combined benefits provide significant safety and installation advantages that often justify the investment for critical marine systems.
Is it difficult to find replacement circuit breakers in specific amperages?
Occasionally, sourcing specific amperage ratings for replacement can present challenges. It is advisable to verify availability of your required amperage at the time of purchase or when planning future replacements to ensure uninterrupted system protection.
Why is the price higher than other circuit breakers?
The higher price reflects the advanced features including the integrated manual switch, SAE J1171 ignition protection for gasoline engines, a robust trip-free mechanism, and comprehensive waterproofing, all contributing to enhanced safety and simplified installation compared to separate components.
Frequently Asked Questions
What is the voltage rating of the Blue Sea 7046 circuit breaker?
The Blue Sea 7046 circuit breaker has a maximum voltage rating of 48V DC.
What is the interrupt rating of the Blue Sea 7046 circuit breaker?
The Blue Sea 7046 circuit breaker has an interrupt rating of 5000 Amperes at 12V DC.
Is the Blue Sea 7046 circuit breaker ignition protected?
Yes, the Blue Sea 7046 circuit breaker is ignition protected and compliant with SAE J1171 external ignition protection standards.
What type of circuit breaker is the Blue Sea 7046?
The Blue Sea 7046 is a Type III, 187-Series thermal circuit breaker that is switchable, manually resettable, and features a trip-free design.
Can the Blue Sea 7046 be used on gasoline-powered boats?
Yes, the Blue Sea 7046 is specifically designed for use on gasoline-powered boats due to its SAE J1171 ignition protection, which prevents ignition of flammable engine compartment vapors.
