FMB1Z-125 DC Mini Circuit Breaker

What Is a DC Circuit Breaker?

A DC circuit breaker is a critical component in any electrical circuit that uses direct current (DC). Its primary function is to protect electrical circuits from damage caused by overcurrents, such as overloads or short circuits. Unlike AC circuit breakers, which interrupt alternating current, DC circuit breakers are specifically designed to handle the unique characteristics of direct current, including the challenges posed by the arcing that occurs when opening a DC circuit.

The USFULL FMB1Z-125 DC Mini Circuit Breaker is a great example of such a device, offering excellent quality and consistency to ensure the safe use of electricity in various applications. Whether used in solar power systems, battery storage, or other DC-powered equipment, this circuit breaker provides reliable protection for both the system and the users.

USFULL FMB1Z-125 DC Mini Circuit Breaker Product Details

The USFULL FMB1Z-125 DC Mini Circuit Breaker is engineered with attention to detail, ensuring durability and safety in its operation. In the product image, we can see several important features:

1. Brand & Model: USFULL FMB1Z-125.
2. Current & Voltage Rating: These parameters are clearly marked to indicate the suitable ranges for optimal operation.
3. Standard: The product adheres to international safety and performance standards.
4. Indicator Window: This allows users to visually inspect the status of the circuit breaker, whether it is open or closed.
5. Certification: The product is certified to meet regulatory standards for safety and reliability.
6. Breaking Capacity: The maximum fault current the breaker can interrupt without damage.
7. Screw Terminals: For secure wiring connections to ensure reliable operation.

What Is the Internal Structure of the Product Like?

Inside the USFULL FMB1Z-125 DC Mini Circuit Breaker, several key components work together to ensure safe and reliable operation. The internal structure consists of the following parts:

1. Flame Retardant Shell: This provides protection against fire hazards, ensuring the safety of the electrical system even in extreme conditions.
2. Tripping Device: This mechanism activates when the current exceeds safe limits, causing the breaker to open and interrupt the circuit.
3. Electromagnetic Trip: This is an essential part of the tripping device, which detects excessive current and triggers the opening of the circuit.
4. DC Arc Striking System: Designed to handle the formation of arcs when interrupting direct current, this system ensures a controlled break.
5. DC Arc Extinguishing System: This part of the circuit breaker extinguishes any arcs formed during the interruption, preventing damage to the device and ensuring the circuit is safely opened.

Below Are the DC Circuit Breaker Specifications

The USFULL FMB1Z-125 DC Mini Circuit Breaker boasts the following specifications:

What Are the Advantages of the USFULL DC Circuit Breaker?

1. High Adaptability to the Environment: The circuit breaker performs well in diverse environmental conditions, ensuring reliability even in harsh environments.
2. Flame Retardant Material: The use of flame retardant materials significantly reduces the risk of fire hazards, making the product safe for residential and industrial installations.
3. Short Circuit Protection: The breaker effectively protects the circuit from damage due to short circuits, preventing system failures and equipment damage.
4. Overload Protection: By sensing overload conditions, it disconnects the circuit before damage can occur.
5. High and Low Temperature Resistance: It is designed to operate efficiently in a broad temperature range, ensuring consistent performance in both extreme heat and cold.
6. CE Certification: The CE mark indicates that the circuit breaker complies with European safety and environmental regulations.
7. ARC Extinguishing System: The built-in arc extinguishing system ensures safe operation by efficiently controlling and extinguishing arcs during circuit interruption.

How the DC Circuit Breaker Is Wired?

Wiring a DC circuit breaker is a straightforward process but requires careful attention to ensure safety and functionality. The breaker has clearly marked terminals for connecting the DC power source and the load. The wiring process involves:

Where Can the DC Circuit Breaker Be Used?

The USFULL FMB1Z-125 DC Mini Circuit Breaker is suitable for various applications, especially in renewable energy systems, such as:

1. Large Project PV Power Generation: Ideal for large-scale photovoltaic systems, where high current protection is essential.
2. Rural House PV Power Generation: Provides safe operation for off-grid solar power systems in rural areas.
3. City Streetlight PV Power Generation: Used in solar-powered streetlight installations for urban infrastructure.
4. Large Public Places PV Power Generation: Ensures the safety of solar power systems in large public venues like parks, shopping malls, and more.
5. Industrial Building PV Power Generation: Protects the solar power installations in industrial buildings, ensuring continuous and safe operation.

In conclusion, the USFULL FMB1Z-125 DC Mini Circuit Breaker offers high-quality protection for DC circuits, with a robust design and excellent performance. Whether used in solar power systems or other DC applications, it guarantees safety and reliability