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Home > Electrical & Electronics > Power Supply & Distribution > Switchgear > Small DC Circuit Breaker FK6-63DC for Solar PV Systems and DC Power Supplies

Small DC Circuit Breaker FK6-63DC for Solar PV Systems and DC Power Supplies

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Small DC Circuit Breaker FK6-63DC for Solar PV Systems and DC Power Supplies photo-5

Product Spotlights

The FK6-63DC is a compact DIN-rail mount DC circuit breaker designed specifically for solar PV systems and DC power supplies. It offers reliable overcurrent and short-circuit protection with a wide current range (1-63A) and high DC voltage ratings up to 750V. Its space-saving design, clear trip indication, and robust construction ensure enhanced safety, system uptime, and design flexibility for global DC applications.

US$ 1 ≥10 Pieces

Key Specifications

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Model:

FK6-63DC

Rated Current:

1A-63A (customizable)

Rated Voltage:

DC 250V/500V/750V

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
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Model FK6-63DC

Rated Current 1A-63A (customizable)

Rated Voltage DC 250V/500V/750V

Poles 1P, 2P, 3P, 4P

Breaking Capacity 10kA @ DC 250V

Mounting Type DIN Rail Mount

Application Solar PV Systems, DC Power Supplies

Trip Characteristic C Curve (Standard), D Curve (Optional)

Terminal Type Screw Clamp

Operating Temperature -25°C to +70°C

As a professional manufacturer with a strong export presence, Jinhua Dika Electrical Equipment Co., Ltd. proudly introduces the FK6-63DC Small DC Circuit Breaker. Engineered specifically for the demanding environments of solar photovoltaic (PV) systems and DC power supplies, this device offers reliable, compact, and efficient overcurrent protection. Our commitment to quality, backed by rigorous management systems, ensures that every FK6-63DC breaker provides the safety and performance required for critical DC applications worldwide.

Designed to meet the unique challenges of DC circuits, the FK6-63DC is a vital component for system integrity. Its compact size saves valuable panel space without compromising on protection capabilities, making it an ideal choice for both new installations and retrofit projects.

Key Features & Technical Advantages:

High-Performance DC Interruption: Specifically optimized for DC current interruption, effectively quenching the DC arc to prevent system damage and fire hazards.
Wide Current & Voltage Range: Available in a broad spectrum from 1A to 63A, with rated voltages up to DC 750V, catering to various system sizes and configurations.
Compact DIN Rail Design: Its space-saving form factor allows for high-density mounting on standard DIN rails, maximizing the utilization of electrical enclosures and control panels.
Robust Construction: Built with high-quality, flame-retardant materials and precision components to ensure long-term reliability and stable performance under fluctuating environmental conditions.
Clear Trip Indication: Features a visual trip indicator (red flag) for quick and easy identification of a tripped breaker, facilitating faster troubleshooting and system restoration.
Easy Installation & Wiring: Equipped with reliable screw clamp terminals for secure and straightforward connection of conductors, reducing installation time.

Detailed Technical Specifications:

Parameter	Specification
Product Model	FK6-63DC
Rated Operational Voltage (Ue)	DC 250V / 500V / 750V
Rated Current (In)	1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63A (Other values available upon request)
Number of Poles	1P, 2P, 3P, 4P
Rated Ultimate Short-Circuit Breaking Capacity (Icu)	10kA at DC 250V
Tripping Characteristic	C Curve (Standard), D Curve (Optional)
Mechanical Life	≥ 20,000 operations
Electrical Life	≥ 10,000 operations at rated current
Mounting	Standard 35mm DIN Rail (EN 60715)
Terminal Connection	Screw Clamp
Operating Temperature Range	-25°C to +70°C
Storage Temperature Range	-40°C to +85°C

Benefits for Your Business:

Enhanced System Safety: Provides critical protection against overloads and short circuits in DC circuits, safeguarding expensive solar panels, batteries, and DC power equipment.
Improved System Uptime: Minimizes downtime by reliably isolating faulty circuits, allowing the rest of the system to continue operating.
Cost-Effective Solution: Offers a reliable protection component at a competitive price point, contributing to a lower total cost of ownership for your projects.
Design Flexibility: The availability of multiple pole configurations and current ratings allows for tailored protection schemes for complex DC systems.
Global Market Compatibility: Suitable for a wide range of applications and designed to perform reliably in diverse climatic conditions, supporting projects in our extensive main markets from North America and Europe to Southeast Asia and Africa.

Trust in a supplier with a proven track record. Jinhua Dika Electrical Equipment Co., Ltd. operates with a comprehensive quality management framework and exports millions of dollars in electrical products annually to markets across the globe. Our FK6-63DC DC Circuit Breaker embodies this commitment to excellence. By choosing our product, you are selecting a component backed by manufacturing expertise, rigorous standards, and reliable logistics through major ports like Shanghai, Tianjin, Guangzhou, and Ningbo. We encourage you to contact us to discuss how the FK6-63DC can be integrated into your solar PV or DC power supply projects for enhanced safety and performance.

Frequently Asked Questions (FAQ)

Q: Can the FK6-63DC be used for both AC and DC circuits?
A: No. The FK6-63DC is specifically designed and rated for Direct Current (DC) applications only. Using an AC-rated breaker on a DC circuit can be dangerous and is not recommended, as DC arc extinction requires different internal design.
Q: What is the difference between C Curve and D Curve tripping characteristics?
A: The C Curve is typically used for general-purpose circuits with moderate inrush currents (e.g., lighting, control circuits). The D Curve is designed for circuits with high inrush currents, such as those powering transformers, motors, or power supplies. For solar applications, C Curve is standard, but D Curve can be specified for specific loads.
Q: How do I select the correct current rating for my application?
A: The breaker rating should be selected based on the maximum continuous current expected in the protected circuit, typically with a small margin above the normal operating current. Consult your system design specifications or a qualified electrician to determine the appropriate ampere rating (1A-63A).
Q: Is this breaker suitable for outdoor use?
A: The FK6-63DC is designed for installation within enclosed electrical panels or enclosures that provide protection from direct exposure to rain, UV radiation, and extreme dust. It is not rated as a standalone outdoor device.
Q: Do you offer custom current ratings outside the standard list?
A: Yes, we can provide customizable current ratings upon request for larger volume orders. Please contact our sales team with your specific requirements.
Q: What is the maximum wire size for the terminals?
A: The screw clamp terminals typically accommodate solid or stranded copper conductors. The exact maximum size depends on the specific model and pole configuration; please refer to the detailed datasheet or contact us for terminal specifications.
Q: Are these breakers shipped with a manual or installation guide?
A: Yes, standard packaging includes basic installation instructions. Comprehensive technical datasheets are available for download from our website or can be provided directly by our support team.
Q: What is your typical lead time for orders?
A: Lead times vary based on order quantity and specific configuration. Standard models are often available from stock or have short production cycles. We provide clear lead time estimates upon receipt of your inquiry.