Puffer Type Load Switch-Fuse Combination Panel

FKN12A-12D and FKRN12A-12D puffer-type load switches, manufactured by China's Jinhand Electrical, provide control and protection for 12kV systems. As a reliable factory and supplier, Puffer Type Load Switch-Fuse Combination Panels are ideal for compact substations and ring networks. With growing global influence, we welcome partnerships worldwide.

Advantages

1.Versatile Application: Suitable for three-phase distribution systems up to 12kV, making them adaptable for various power equipment control and protection needs.
2.Effective Protection: The FKRN12A-12D combination device provides enhanced protection by interrupting line short-circuit currents in addition to handling load and overload currents.
3.Ideal for Urban and Rural Use: Particularly well-suited for terminal substations and compact substations, facilitating reliable power distribution in both urban and rural grids.

MAIN TECHNICAL PARAMETERS

Environmental Condition

Ambient Air Temperature Limits: Upper limit +40℃, Lower limit -25℃；
Altitude not exceeding 1000m；
Relative Humidity: Daily average not greater than 95%, Monthly average not greater than 90%；
Seismic Intensity not exceeding 8 degrees；
Locations free from fire, explosion hazards, chemical corrosion, and severe vibration；
Pollution Degree: Class Ⅱ

Main Features

1.Load Switching Capabilities: The FKN12A-12D load switch can effectively switch load currents and manage overload conditions, ensuring safe operation of connected equipment.
2.Combination Device Functionality: The FKRN12A-12D puffer-type load switch-fuse combination device integrates load switching and short-circuit interruption functionalities in a single unit, enhancing operational efficiency.
3.Compatibility with Power Supply Units: Designed for controlling and protecting ring network and dual radial power supply units, ensuring reliable distribution in diverse network configurations.

Product Highlights

1.Integrated Multi-Function Design: Combines load switch and fuse into one unit, enabling both load switching and short-circuit protection for 12kV distribution systems.
2.Compact and Highly Adaptable: Small footprint ideal for compact substations and ring main units, especially suitable for urban and rural terminal substations.
3.Reliable Arc-Extinguishing Performance: Puffer-type arc quenching ensures strong breaking capability and low switching overvoltage for enhanced system safety.
4.Flexible Configuration Options: FKN12A-12D supports load switching only, while FKRN12A-12D integrates fuses for short-circuit interruption, meeting diverse protection needs.
5.Wide Environmental Suitability: Operates in temperatures from -25°C to +40°C, altitudes up to 1000m, and is suitable for Pollution Degree Class Ⅱ areas.

Optimized Operational Costs

1.Modular Maintenance Design: Fuse and operating mechanism are independently replaceable modules, reducing downtime and labor costs.
2.Long-Life Contact System: Silver-plated contacts combined with puffer-type quenching extend electrical lifespan and reduce replacement frequency.
3.Visible Status Indicators: Some models feature viewing windows or position indicators for easier inspection and condition assessment, improving maintenance efficiency.

Logistics & Installation Support

1.Standardized Packing and Transport: Industrial-grade moisture-proof and shock-resistant packaging supports shipment as complete cabinets or modular boxes, adaptable to various logistics conditions.
2.High Installation Compatibility: Multiple mounting brackets and connection options ensure compatibility with common ring main units and switchgear.
3.Full-Cycle Technical Support: Drawing review, installation guidance, and commissioning assistance to ensure smooth project commissioning.

Durability & Stability

1.Mechanical Life Up to 2000 Operations: Operating mechanism undergoes rigorous type testing and endurance verification for high reliability.
2.Excellent Insulation Performance: Isolation gap withstand voltage up to 48kV, lightning impulse withstand up to 85kV, suitable for demanding grid environments.
3.Fully Enclosed Construction: Protection rating up to IP4X, effectively resistant to dust and moisture, suitable for outdoor and semi-outdoor installation.

FAQ

Q1: What is the main difference between FKN12A-12D and FKRN12A-12D?
A: FKN12A-12D is a load switch used for switching load currents and overload protection. FKRN12A-12D is a load switch-fuse combination unit, capable of both load switching and short-circuit interruption via fuses.
Q2: Is it suitable for transformer protection?
A: Yes, it is particularly suitable for controlling and protecting 12kV distribution transformers, with no-load transformer breaking capacity up to 1250kVA.
Q3: Is fuse replacement convenient?
A: Designed for front or top replacement, allowing fuse exchange without removing busbars or the main switch body, ensuring simplicity and safety.
Q4: Can it be upgraded for automation?
A: Yes, it can be equipped with motorized operating mechanisms, position sensors, and communication interfaces to support remote control, signaling, and automation functions.

Service System

1.Pre-Sales Technical Consultation: System diagram review, selection advice, and solution optimization.
2.After-Sales Training and Guidance: On-site or online training covering operation, maintenance, and safety protocols.
3.Rapid Spare Parts Supply: Regular stock of consumables like fuses and operating mechanisms, supporting urgent orders.
4.Lifecycle Technical Support: Equipment health checks, retrofit upgrades, and life-extension services.

Contact us

With more than ten years of industry know-how, Jinhand has become one of China’s prominent manufacturers and suppliers of electrical equipment. Our factory utilizes a great many advanced technologies and equipment, and we invite you to purchase our high-grade, competitively priced China-made products.