(H)RW9(10)-35/(H)RXW0-35 Drop-Out Fuse

Overhead Line Protection for Distribution Transformers and Capacitor Banks

The H-RW9 and H-RXW0-35 drop-out fuse cutouts are designed for medium and high voltage overhead distribution systems, rated up to 35kV. They offer economical and reliable protection for distribution transformers, capacitor banks, and rural feeder circuits, especially in pole-mounted applications.

These fuses interrupt overcurrent caused by faults or equipment failure, protecting both the grid and field assets from severe damage. Their drop-out mechanism provides visible isolation after fuse operation, improving maintenance safety and visual inspection efficiency.

🔧 Product Highlights

Rated Voltage Range: 10kV to 35kV
Rated Current: 100A / 200A
Breaking Capacity: up to 12kA
Insulation Type: Porcelain or polymer (silicone rubber)
Installation: Pole-mounted (vertical orientation)
Standard Compliance: IEC 60282-2 / GB15166.3-2007

🌍 Applications

Rural distribution transformers (pole-mounted)
Capacitor bank protection in sub-transmission networks
Backup protection for reclosers and sectionalizers
Outdoor installations in humid, dusty, or polluted environments

The H-RXW0-35 polymer type is especially recommended for high-altitude, coastal, or desert regions where ceramic may degrade faster.

⚙️ Key Features

Drop-out design provides a visible disconnection after the fuse blows
Interchangeable fuse links available for 2A–200A ratings
Arc-extinguishing tube minimizes the risk of re-ignition
Silicone type resists UV, salt fog, and acid rain
Stainless steel trunnion and hardware for anti-corrosion durability
Easy replacement in the field with hot-stick compatibility

📐 Technical Parameters

Parameter	Value
Rated Voltage	10kV / 12kV / 24kV / 33kV / 35kV
Rated Current	100A / 200A
Breaking Capacity	Up to 12kA
Fuse Link Range	2A–200A (IEC type)
Power Frequency Withstand	45–95kV (1 min dry)
Lightning Impulse Voltage	75–200kV (depending on model)
Material	Porcelain or Polymer
Operating Temperature	–40°C to +60°C

🔄 Model Differentiation

Model	Insulation Type	Typical Voltage Level	Notes
H-RW9-10	Porcelain	10–12kV	Standard rural transformer use
H-RW9-35	Porcelain	33–35kV	Larger creepage distance
H-RXW0-35	Polymer	24–35kV	UV/corrosion resistant

❓ Frequently Asked Questions

• What’s the difference between H-RW9 and H-RXW0 models?
H-RW9 uses porcelain insulation; H-RXW0 is made of polymer (silicone) and is more suitable for harsh outdoor environments.

• Are these fuses compatible with US or IEC fuse links?
Yes, we offer both IEC-standard and NEMA-type fuse holders upon request.

• Can they be installed on wooden poles?
Yes, mounting brackets are compatible with wooden, concrete, and steel poles.

• Are these cutouts maintenance-free?
They require periodic inspection but no lubrication or adjustment. Fuse links are replaceable in the field.

• Can you supply coordination curves or protection drawings?
Yes. Our team can provide time-current characteristic (TCC) curves and coordination support upon request.