RT0 Filled Enclosed Tubular Fuse
The RT0 series of filled enclosed tubular fuse and associated fuse base provides reliable protection for industrial electrical distribution equipment against overloads and short circuits. These fuses are designed for use in AC 50Hz circuits with a rated voltage of 380V (with some models also suitable for DC 440V applications) and can handle rated currents up to 1000A. Featuring a “gG” characteristic for full-range breaking capacity for general-purpose applications, the RT0 series ensures dependable performance and compliance with GB 13539.1 and GB/T 13539.2 standards.
✅ Reliable Circuit Protection
✅ High Breaking Capacity
✅ Versatile Applications
✅ Wide Current Range
✅ Flexible Installation
Product Information
| Fuse Rated Current (A) | Rated Body Current (A) | Rated Breaking Capacity (KA) | 380V (Effective Value) | COSΦ | 440V (Tms) |
|---|---|---|---|---|---|
| 100 | 30, 40, 50, 60, 80, 100 | 50 | 0.1~0.2 | 25 | |
| 200 | 80, 100, 100, 150, 200 | 50 | 0.1~0.2 | 25 | |
| 400 | 150, 200, 250, 300, 350 | 50 | 0.1~0.2 | 25 | |
| 600 | 350, 400, 450, 500, 550, 600 | 50 | 0.1~0.2 | 25 | |
| 1000 | 500, 600, 700, 800, 900, 1000 | 50 | 0.1~0.2 | 25 |
Dimensions:
| Model | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | I (mm) | K (mm) | Φ (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| RT0-100 | 180 | 160 | 73 | 20 | 30 | 55 | 32 | 9 | 40 | M8 |
| RT0-200 | 200 | 175 | 88 | 20 | 30 | 55 | 32 | 10 | 46 | M10 |
| RT0-400 | 220 | 190 | 95 | 20 | 30 | 70 | 37 | 12 | 55 | M12 |
| RT0-600 | 260 | 220 | 118 | 30 | 40 | 80 | 45.5 | 16 | 66 | M16 |
Tubular Fuse Body Dimensions:
| Model | A x D (mm) | A x X (mm) | E x F (mm) |
|---|---|---|---|
| RT0-100 | 40 x 40 | 18 x 6 | 67 |
| RT0-200 | 46 x 46 | 23 x 6 | 67 |
| RT0-400 | 55 x 55 | 33 x 6 | 67 |
| RT0-600 | 66 x 66 | 36 x 6 | 67 |
Product Content
Why Huyu RT0 is the Preferred Choice for Tubular Fuse
In industrial power systems, a sudden short circuit or prolonged overload can lead to catastrophic equipment failure or even electrical fires. Standard fuses without high breaking capacities may fail to quench the arc quickly enough, causing the tubular fuse itself to rupture and leading to expensive downtime and safety risks.The Huyu RT0 series is a low-voltage, filled enclosed tubular fuse engineered for high-performance fault interruption. It provides a reliable shield for AC 380V or DC 440V circuits, ensuring that faults are isolated before they can damage your assets.
1.High-Capacity Arc Quenching and Safety
The “Filled Enclosed” (T type) design of the RT0 is its greatest advantage. Unlike open-wire fuses, the RT0 tube is filled with high-purity quartz sand (extinguishing agent) that instantly quenches the electrical arc during a fault.
50kA Breaking Capacity: In AC 380V systems, the RT0 provides a massive 50kA rated breaking capacity. This ensures it can safely handle severe short-circuit currents without external flashover.
Standard Compliance: Every unit is manufactured to conform to the GB13539.1 standard, guaranteeing high-level safety and interoperability in global industrial applications.
2.Dual-System Compatibility (AC and DC)
One reason the Huyu RT0 is the Top Choice is its versatility across different power platforms:
AC Applications: Optimized for AC 50Hz, 380V circuits, making it ideal for standard factory distribution and motor control centers.
DC Applications: Capable of protecting DC 440V systems, such as industrial battery banks, DC motors, and specialized power supplies.
Wide Range of Ratings: We offer a comprehensive current range, from the compact RT0-100 (30A–100A) for small circuits to the heavy-duty RT0-1000 (500A–1000A) for large-scale feeders.
3.Precision Engineering for Longevity
The mechanical design of the RT0 ensures consistent performance over years of service:
Stable Mounting Bases: The base volume is designed with specific dimensions (up to 260mm length for RT0-600) to ensure secure mounting and optimal heat dissipation.
Low Resistance Contacts: By utilizing high-quality conductive materials for the melt volume (such as the 66 × 66 melt size for RT0-600), we significantly reduce contact resistance and power loss.
Clear Identification: The model naming follows a strict logic—R (Fuse), T (Enclosed Tube), 0 (Design Serial)—allowing for easy identification and maintenance.
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