FMB7N-PV Solar DC Circuit Breaker

What Is a Solar DC Circuit Breaker?

A Solar DC Circuit Breaker is an essential safety component used in solar power systems to protect against electrical faults, ensuring the system operates efficiently and safely. These devices are specifically designed to handle direct current (DC) circuits, which are commonly used in solar energy systems for transmitting electricity from solar panels to inverters and other components. With the increasing use of solar energy across various applications, having reliable circuit breakers in place becomes crucial for maintaining the safety and performance of the system.

USFULL Solar DC Circuit Breaker-FMB7N-PV Product Details Show

The USFULL Solar DC Circuit Breaker FMB7N-PV is a robust device designed for maximum safety and durability in solar applications. When you look closely at the product details, you’ll notice several key features:

• Brand: USFULL, a trusted name in the industry for high-quality electrical components.
• Holding Screw: Ensures secure mounting of the breaker.
• Operating Handle: Allows for manual operation of the breaker, making it easy to disconnect the circuit when necessary.
• Quality Standard Certificate: The product meets international quality standards, offering peace of mind for users.
• Product Type: A specialized breaker designed for solar DC circuits.
• Breaking Capacity: High breaking capacity, capable of handling high fault currents.
• Indication Window: A visual indicator showing the status of the breaker, allowing users to see if it is in an “ON” or “OFF” state.
• Wiring Diagram: Clear instructions provided for proper installation.
• Rated Current: Available in various current ratings to suit different solar applications.

These features contribute to the breaker’s reliability and ease of use, making it an ideal choice for solar power systems.

What Is the Internal Structure of the Product Like?

The internal structure of the USFULL Solar DC Circuit Breaker is carefully designed to handle the high demands of DC applications in solar energy systems. The key internal components include:

• Flame Retardant Shell: Protects the breaker from heat and flames, ensuring safety in case of electrical faults.
• Tripping Device: Automatically disconnects the circuit during overloads or short circuits.
• Electromagnetic Trip: A safety mechanism that activates the tripping device when excessive current is detected.
• DC Arc Striking System: Specialized system for handling the unique characteristics of DC arcs.
• DC Arc Extinguishing System: Extinguishes arcs effectively to prevent damage to the system or fire hazards.

These internal components work together to provide effective protection against electrical faults, ensuring the system remains safe even in extreme conditions.

Below Are the Solar DC Circuit Breaker Specifications

What Are the Advantages of the USFULL Solar DC Circuit Breaker?

The USFULL Solar DC Circuit Breaker comes with a wide range of advantages that make it stand out in the market:

• Product Length: 98mm (compact design for easy integration).
• Terminal Design: Extended shell size, increases creepage distance, and isolates the arc for better protection.
• Two-Stage Spring Buckle: Includes a halfway stop, making installation and disassembly easier.
• Side Heat Strip: Enhances air circulation and ensures effective cooling, making it ideal for high-temperature environments.
• Rated Voltage: Available in 300V, 600V, 900V, and 1200V variants to suit various system requirements.
• Flame Retardant Material: Ensures durability and safety under extreme conditions.
• Short Circuit Protection: Safeguards the system from short-circuit damage.
• Indication Window: Provides clear visual indication of the breaker’s status.
• Overload Protection: Prevents the system from damage due to excessive current.
• High and Low Temperature Resistance: The breaker operates efficiently across a wide range of temperatures.
• Arc Extinguishing System: Ensures safe operation by preventing hazardous arc formations.

How the Solar DC Circuit Breaker Is Wired?

The Solar DC Circuit Breaker is designed for easy integration into solar energy systems. The wiring involves connecting the breaker between the DC power source (typically a solar panel or solar array) and the inverter or other critical components. The wiring should be done in accordance with the provided wiring diagram, ensuring all connections are secure and meet the appropriate safety standards.

The indication window on the breaker allows users to easily check the status of the device, whether it is in an active or tripped condition, ensuring quick troubleshooting in case of a fault.

Where the Solar DC Circuit Breaker Can Be Used?

The USFULL Solar DC Circuit Breaker is versatile and can be used in various solar applications, such as:

1. Solar Lighting Systems: Protecting the DC circuits in outdoor solar-powered lighting setups.
2. Solar Power Systems: Safeguarding the wiring and components in solar panels, inverters, and batteries.
3. Solar Irrigation Systems: Ensuring protection in solar-powered irrigation pumps and systems used for agriculture.

In addition to these common applications, the Solar DC Circuit Breaker can be used in any solar-powered system where safe and efficient DC circuit protection is required.