Description
Blue Sea 7577 50A Double Pole Breaker | Boat Supply Store
Navigate demanding electrical loads and ensure critical system isolation with the Blue Sea 7577 A-Series Double Pole Circuit Breaker. Engineered for robust marine environments, this magnetic hydraulic breaker offers a 50A rating suitable for parallel AC and DC applications up to 240V AC or 32V DC. Its 'trip free' design guarantees operational continuity by preventing manual override during fault conditions, a vital safety feature for any vessel operating offshore or in challenging weather.
Key Features
- Double Pole 50A rating for simultaneous control of two circuits
- 'Trip Free' Design prevents manual holding ON during overload
- Clear Visual Indication via color actuator for 'OFF' state
- International Symbols on actuator for versatile orientation
- Magnetic Hydraulic actuation for reliable tripping
- AC/DC Versatility for 120V/240V AC and 32V DC systems
- High Interrupt Capacity of 3000A @ 240V AC
- TUV Certified for verified safety and performance standards
Specifications
| Product Specifications | |
|---|---|
| Amperage | 50A |
| Poles | Double Pole |
| Circuit Breaker Type | Magnetic Hydraulic - trip free |
| Maximum AC Voltage | 240V AC |
| Maximum DC Voltage | 32V DC |
| Interrupt Capacity (AC) | 3000A @ 240V AC |
| Interrupt Capacity (DC) | 5000A @ 32V DC |
| Operating Temperature Range | -40°C to 85°C |
| Actuator Type | Raised Rocker |
| Indicator | Color actuator indicates 'OFF' position |
| Symbols | International ON/OFF symbols |
Who This Is For
Marine electricians and boat owners requiring dependable, double-pole electrical protection for significant loads such as inverters or multiple appliance circuits. DIYers undertaking complex electrical refits will also benefit from its safety features and dual AC/DC capability.
How It Compares
| Feature | Blue Sea 7577 50A Double Pole Breaker | Competitor |
|---|---|---|
| Amperage | 50A | 50A, 50A |
| Poles | 2 | 1, 2 |
| Maximum AC Voltage | 240V AC | 120V AC, null |
| Maximum DC Voltage | 32V DC | 32V DC, 28V DC |
| Circuit Breaker Type | Magnetic Hydraulic - trip free | Thermal-Magnetic - trip free, Thermal-Magnetic |
| Interrupt Capacity (AC) | 3000A @ 240V AC | 1000A @ 120V AC, null |
| Interrupt Capacity (DC) | 5000A @ 32V DC | 2500A @ 32V DC, 1000A @ 28V DC |
Common Concerns Answered
What if the breaker doesn't reset during a fault?
The 'trip free' design of the Blue Sea 7577 prevents the circuit breaker from being manually held in the ON position during an overload or fault condition, ensuring consistent safety and protection.
Is this breaker difficult to install?
Installation requires basic electrical knowledge and tools. Pay close attention to proper wiring and torque specifications, especially for double-pole configurations, for optimal safety and performance. A mounting depth of 2.44" is required.
Can I find replacement parts if needed?
Blue Sea Systems is known for producing durable components. While sourcing specific parts for older models can occasionally be challenging, current product lines are generally well-supported.
Frequently Asked Questions
What is the maximum voltage rating for the Blue Sea 7577 A-Series circuit breaker?
The Blue Sea 7577 A-Series circuit breaker is rated for a maximum of 240V AC and 32V DC.
Can this circuit breaker be used for both AC and DC applications?
Yes, this double-pole breaker is designed for versatility and can be utilized for both 120V AC / 240V AC and 32V DC systems.
What is the interrupt capacity of the Blue Sea 7577 A-Series circuit breaker?
The interrupt capacity is 3000A at 240V AC and 5000A at 32V DC, providing robust protection against high fault currents.
What does 'trip free' design mean for this circuit breaker?
A 'trip free' design means the breaker cannot be manually held closed when an overload or fault is present, ensuring it will trip and open the circuit to prevent damage or fire.
What type of actuator does the Blue Sea 7577 A-Series circuit breaker have?
The Blue Sea 7577 features a raised rocker style actuator. It includes a color actuator that clearly indicates the 'OFF' position and international ON/OFF symbols.
