Description
Blue Sea 7475 150A Circuit Breaker | Boat Supply Store
Safeguard critical DC electrical circuits from destructive overcurrents with the Blue Sea 7475 C-Series Flat Rocker Circuit Breaker, engineered for the demanding marine environment. This breaker employs a robust Magnetic Hydraulic - Trip Free mechanism, ensuring continuous protection by preventing manual reset during a fault and maintaining circuit integrity with a 10,000 switch cycle rating at its rated amperage and voltage. Its unique flat actuator design significantly reduces the risk of accidental disengagement, a crucial feature for high-demand applications like powering bilge pumps or navigation systems on offshore fishing vessels traversing the Gulf of Mexico.
Key Features
- Reliable 150 Amp overcurrent protection for critical DC circuits.
- Trip-Free Magnetic Hydraulic mechanism prevents manual reset during fault conditions.
- Safe Flat actuator design minimizes accidental switching and ensures positive engagement.
- Durable Rated for 10,000 switch cycles at maximum amperage and voltage.
- Versatile Available in Single and Double Pole configurations (this MPN is for single/double pole type).
- Clear Color actuator visually confirms the OFF position.
- Certified UL Recognized and ABYC compliant for marine safety.
- Robust Engineered for demanding marine electrical system requirements up to 80V DC.
Specifications
| Product Specifications | |
|---|---|
| Brand | Blue Sea Systems |
| Series | C-Series |
| Type | Flat Rocker Circuit Breaker |
| Amperage Rating | 150 Amp |
| Poles | Single and Double Pole (MPN 7475) |
| Mechanism | Magnetic Hydraulic - Trip Free |
| Maximum Voltage | 80 Volts DC |
| Rated Switch Cycles | 10,000 @ rated amperage and voltage |
| Actuator Design | Flat Rocker |
| Actuator Color | Indicates OFF position |
Who This Is For
Marine electricians and boat owners requiring reliable overcurrent protection for DC systems up to 80V and 150 Amps. System builders seeking a robust breaker with features to prevent accidental activation and ensure proper fault interruption will find this unit highly suitable.
How It Compares
| Feature | Blue Sea 7475 150A Circuit Breaker | Fuse holder lever |
|---|---|---|
| Amperage Rating | 150 Amp | 100 Amp |
| Maximum Voltage | 80 Volts DC | 80 Volts DC |
| Circuit Breaker Type | Magnetic Hydraulic - Trip Free | Magnetic Hydraulic - Trip Free |
| Actuator Design | Flat Rocker | Flat Rocker |
| Amperage Rating | 150 Amp | 150 Amp |
| Maximum Voltage | 80 Volts DC | 32V DC |
| Circuit Breaker Type | Magnetic Hydraulic - Trip Free | Fuse |
| Actuator Design | Flat Rocker | Typically less capable |
Common Concerns Answered
Is the price of this circuit breaker significantly higher than basic fuse solutions?
While the initial cost may be higher than simple fuse solutions, the long-term reliability, resettable functionality, and advanced safety features of the Blue Sea 7475 justify the investment for critical marine DC systems, offering superior protection and durability.
What are the installation requirements for this breaker?
Installation requires a basic understanding of DC electrical systems, including proper wiring, secure terminations, and circuit load management. For individuals unfamiliar with marine electrical configurations, professional installation is strongly recommended to ensure system integrity and safety.
Will this breaker require replacement like a fuse?
No, this circuit breaker features a resettable mechanism, unlike a fuse which must be replaced after tripping. This provides a more convenient and cost-effective solution for managing overcurrent events in your marine electrical system.
Frequently Asked Questions
What is the maximum voltage rating for the Blue Sea 7475 C-Series circuit breaker?
The Blue Sea 7475 C-Series circuit breaker has a maximum DC voltage rating of 80 Volts DC.
What does the 'Trip Free' design mean for this circuit breaker?
A 'Trip Free' design means the circuit breaker cannot be manually held in the ON position when an overcurrent condition is detected; it will trip regardless of manual actuator position, ensuring protection.
How does the flat actuator protect against accidental switching?
The flat actuator is designed to be less susceptible to incidental contact or vibration-induced movement, significantly reducing the likelihood of accidental ON/OFF switching compared to a more protruding rocker design.
What is the rated switch cycle for this breaker?
This circuit breaker is rated for 10,000 switch cycles at its rated amperage and voltage, ensuring long-term operational reliability.
Is this circuit breaker suitable for AC or DC systems?
The Blue Sea 7475 C-Series circuit breaker is specifically designed and rated for DC (Direct Current) electrical systems, with a maximum voltage rating of 80V DC. It is not intended for AC (Alternating Current) applications.
