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Home > Electrical & Electronics > Power Supply & Distribution > Switchgear > C-type Circuit Breaker FK80-125DC 125A Low-voltage Circuit Breaker for DC Systems

C-type Circuit Breaker FK80-125DC 125A Low-voltage Circuit Breaker for DC Systems

C-type Circuit Breaker FK80-125DC 125A Low-voltage Circuit Breaker for DC Systems thumbnail-3

C-type Circuit Breaker FK80-125DC 125A Low-voltage Circuit Breaker for DC Systems thumbnail-4

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Product Spotlights

The FK80-125DC is a 125A C-type low-voltage circuit breaker engineered specifically for DC system protection. It features a thermal-magnetic trip mechanism calibrated for DC fault currents, high breaking capacity, and robust construction. Available in multiple pole configurations, it ensures reliable safety for solar power, battery storage, telecom, and industrial DC applications, offering durability and easy DIN-rail installation.

US$ 2.5 ≥10 Pieces

Key Specifications

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Product Type:

C-type Low-voltage Circuit Breaker

Rated Current:

125A

Rated Voltage:

DC Systems

Contact Supplier Request Quote Chat Now

Jinhua Dika Electrical Equipment Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Product Type C-type Low-voltage Circuit Breaker

Rated Current 125A

Rated Voltage DC Systems

Model FK80-125DC

Pole Configuration 1P, 2P, 3P, 4P (customizable)

Breaking Capacity High (specific value available upon request)

Mounting Style DIN rail mountable

Operating Temperature -25°C to +70°C

Electrical Life >10,000 cycles (mechanical)

Standards Compliance Designed to meet relevant IEC standards

As a professional manufacturer of electrical protection devices, Jinhua Dika Electrical Equipment Co., Ltd. is proud to introduce the FK80-125DC C-type Circuit Breaker. Engineered specifically for the demanding requirements of direct current (DC) systems, this 125A low-voltage circuit breaker is designed to provide reliable overcurrent and short-circuit protection, ensuring the safety and longevity of your DC-powered equipment and installations. With over a decade of experience in serving global markets from North America to Southeast Asia, we understand the critical need for robust and dependable circuit protection. The FK80-125DC is a product of this expertise, offering a combination of performance, durability, and safety tailored for modern DC applications in renewable energy, telecommunications, industrial control, and transportation systems.

Core Features and Technical Advantages:

Precision DC Protection: Unlike standard AC breakers, the FK80-125DC is specifically optimized for DC circuits. Its arc quenching and magnetic trip mechanisms are calibrated for the unique characteristics of DC fault currents, providing faster and more reliable interruption.
High Breaking Capacity: Designed to safely interrupt high fault currents commonly found in DC systems like solar arrays or battery banks, minimizing the risk of damage from short circuits.
Thermal-Magnetic Trip Unit: Incorporates a dual-function trip mechanism. The thermal element provides protection against sustained overloads, while the magnetic element offers instantaneous tripping for severe short circuits.
Robust Construction: Manufactured from high-grade, flame-retardant engineering plastics and precision metal components, ensuring mechanical durability and long electrical life even in challenging environments.
Easy Installation and Maintenance: Features a compact, DIN-rail mountable design for quick and space-efficient panel installation. Clear ON/OFF indication and a user-friendly toggle switch facilitate easy operation and status monitoring.
Versatile Configuration: Available in various pole configurations (1P, 2P, 3P, 4P) to suit different system wiring requirements, including positive/negative pole isolation and full DC system isolation.

Technical Specifications:

Parameter	Specification
Product Model	FK80-125DC
Rated Operational Current (I_n)	125 Amperes
Rated Operational Voltage (U_e)	For DC Systems (Specific voltage rating available upon request)
Pole Configuration	1P, 2P, 3P, 4P (Standard and customizable options)
Trip Characteristic	C-type Curve (5-10 x I_n)
Mounting	DIN Rail (35mm)
Operating Temperature Range	-25°C to +70°C
Electrical Life	>10,000 cycles at rated current
Terminal Connection	Screw Clamp

Benefits for Your Business:

Enhanced System Safety: Reliably protects expensive DC equipment such as inverters, battery storage systems, and control panels from damage due to overloads and short circuits, reducing downtime and repair costs.
Improved System Reliability: Consistent performance ensures the continuous operation of critical DC infrastructure, which is vital for sectors like solar power generation and data centers.
Compliance and Peace of Mind: The design adheres to common international electrical safety principles, aiding in the construction of compliant and safe electrical installations.
Cost-Effective Solution: Offers a durable and reliable protection solution that can help avoid more costly system failures, providing strong value over its long service life.
Global Supply Chain Support: With major shipment ports like Shanghai, Tianjin, Guangzhou, and Ningbo, we ensure timely and efficient delivery to partners worldwide.

Trust and Proven Performance:

Jinhua Dika Electrical operates with a firm commitment to quality, supported by a comprehensive management system. Our products are the choice of clients across diverse markets, from North America and Western Europe to Southeast Asia and Africa. This global reach, with an annual export value in the range of US$1-1.5 Million, is a testament to the reliability and performance of our electrical components. The FK80-125DC circuit breaker is manufactured with precision and backed by our experience in serving the B2B sector. For engineers, project managers, and procurement specialists seeking a dependable 125A DC circuit breaker that balances performance with value, the FK80-125DC presents a compelling choice. Contact us today to discuss your specific requirements, request detailed technical data sheets, or to place an order for this essential component of modern DC power systems.

Frequently Asked Questions (FAQ):

Q: Can this FK80-125DC breaker be used for both AC and DC systems?
A: No. The FK80-125DC is specifically engineered and calibrated for Direct Current (DC) applications. Using an AC-rated breaker in a DC circuit, or vice-versa, can be unsafe and may result in improper protection or failure to interrupt a fault. Always use a breaker designed for the specific current type of your system.
Q: What is the "C-type" trip characteristic, and why is it suitable for DC?
A: The "C-type" curve indicates the breaker's magnetic trip threshold is set for 5 to 10 times its rated current (125A). This provides instantaneous tripping for moderate to high short-circuit currents while allowing harmless temporary inrush currents (common in some DC loads like motors or capacitive circuits) to pass without nuisance tripping, making it a versatile choice for many DC applications.
Q: What is the maximum DC voltage this breaker can handle?
A: The specific voltage rating is an important parameter that depends on the pole configuration and internal design. We offer variants for common DC voltage levels. Please contact our sales team with your system voltage (e.g., 48V, 110V, 220V, 500V DC) to confirm the correct model specification for your needs.
Q: Is this breaker suitable for photovoltaic (PV) solar systems?
A: Yes, DC circuit breakers like the FK80-125DC are commonly used in PV systems for protection on the DC side of the inverter, such as in combiner boxes or battery circuits. Ensure the voltage rating matches your string or array voltage.
Q: How do I know if I need a 1P, 2P, 3P, or 4P version?
A: The required poles depend on your wiring scheme. For a simple single DC line (e.g., breaking the positive conductor only), a 1P breaker may suffice. For breaking both positive and negative conductors in a 2-wire DC system, a 2P breaker is needed. 3P and 4P are used in more complex multi-wire DC systems. Our technical team can assist you in selecting the right configuration.
Q: What certifications does this product hold?
A: Jinhua Dika Electrical Equipment Co., Ltd. maintains a robust quality management system. For specific product certifications related to the FK80-125DC, please inquire directly, as certifications can vary by target market and are subject to updates.
Q: What is the typical delivery lead time for an order?
A: Lead times vary based on order quantity, configuration, and destination. As a manufacturer with established export channels through major Chinese ports, we strive for efficient logistics. Please contact us for a specific delivery estimate based on your project timeline.