What are the different types of cylindrical fuses?
2025-04-23
Cylindrical fuses are commonly used in electrical systems to protect circuits from overcurrent. They are shaped like small tubes and come in different types based on size, speed, voltage rating, and application. Here's a breakdown of the different types of cylindrical fuses:
Common Types of Cylindrical Fuses
1. Fast-Blow Fuses (Quick-Acting Fuses)
- Designed to respond quickly to short circuits and large current surges
- Used where speed is critical, such as in electronic devices and control systems
- Not ideal for circuits with inrush current like motors
2. Slow-Blow Fuses (Time-Delay Fuses)
- Designed to tolerate short bursts of high current (such as motor startups)
- Used in circuits where temporary overloads are normal
- Common in motors, transformers, and lighting systems
3. Glass Tube Fuses
- Typically used in low-voltage applications
- Easy to inspect visually since the glass body shows whether the fuse has blown
- Common in household electronics and appliances
4. Ceramic Tube Fuses
- Can handle higher voltages and temperatures than glass fuses
- Offers better arc suppression when a fuse blows
- Used in industrial applications and high-power circuits
5. High Rupturing Capacity (HRC) Fuses
- Filled with sand or similar materials to absorb energy and prevent arcing
- Designed for high fault levels and industrial use
- Offers high breaking capacity, often up to 100 kiloamperes or more
6. Low Voltage Cylindrical Fuses
- Used in general-purpose applications with voltage ratings up to 690V
- Available in various physical sizes, such as 5x20 mm, 6x30 mm, 10x38 mm
7. Miniature Cylindrical Fuses
- Smaller in size, such as 5x20 mm
- Often used in electronics, battery packs, and compact devices
- Available in both fast and slow blow versions
8. Medium Voltage Cylindrical Fuses
- Used in systems operating at voltages typically between 1kV and 40kV
- Found in substations, transformers, and large industrial equipment
