Glass Fuse 5A – 250V (Size T5x20mm)

Description

A Glass Fuse 5A – 250V is a protective component commonly used in electronic circuits to prevent damage caused by excessive current. The fuse operates as a safety device, designed to “blow” or break the circuit when the current exceeds a certain threshold, preventing damage to sensitive components in the circuit.

Key Features of Glass Fuse 5A – 250V (Size T5x20mm):

1. Current Rating (5A):
   • The fuse is rated for a 5A (ampere) current. This means the fuse will allow 5 amperes of current to flow through the circuit safely. If the current exceeds this rating, the fuse will blow and interrupt the circuit to protect the rest of the components.
2. Voltage Rating (250V):
   • The voltage rating is 250V, meaning the fuse can be safely used in circuits with voltages up to 250V. This is a common voltage rating for various electronic and electrical applications.
3. Size (T5x20mm):
   • The T5x20mm size refers to the dimensions of the fuse:
     • 5mm in diameter (T for the diameter)
     • 20mm in length
   • These dimensions are typical for small, compact glass fuses that are used in a variety of consumer electronics, appliances, and electrical systems.
4. Glass Tube:
   • The fuse is housed in a glass tube that allows for easy visual inspection. When the fuse blows, you can immediately see the break in the filament inside the tube, indicating that the fuse has failed.
5. Blow Type:
   • The fuse is typically a fast-acting fuse, which means it blows quickly when the current exceeds the rated value, providing immediate protection to the circuit from current surges.
6. Breaking Capacity:
   • The fuse is designed to handle a certain level of fault current (e.g., short circuits or surges) without exploding or catching fire. For this fuse, the breaking capacity is typically suited for household or small industrial applications.
7. Material:
   • The fuse is made with a thin wire element inside the glass tube that melts and breaks when the current exceeds the rated limit. The wire’s material is selected for its ability to handle high currents without degrading under normal operation.

Applications of Glass Fuse 5A – 250V (Size T5x20mm):

1. Power Supply Protection:
   • The Glass Fuse 5A is often used in power supplies, adapters, or chargers to protect against overcurrent and prevent the damage of sensitive components like capacitors and transformers.
2. Home Appliances:
   • It is commonly found in consumer electronics and household appliances such as microwaves, refrigerators, and air conditioners, where protection against power surges and short circuits is necessary.
3. Circuit Board Protection:
   • This fuse is used on circuit boards of various electronics to protect the rest of the system from damage caused by overloads or short circuits.
4. Battery-Powered Devices:
   • It is used in battery-operated devices like portable electronics and toys to protect the internal circuitry from overcurrent conditions.
5. Industrial Equipment:
   • The Glass Fuse 5A can be employed in low-power industrial equipment where protection from fault conditions such as overload and short circuit is required.
6. Lighting Fixtures:
   • It can also be used in lighting applications (like LED lights, incandescent lamps, or fluorescent lights) to protect the lamp circuits from power spikes or overcurrent situations.

Advantages of Glass Fuse 5A – 250V (Size T5x20mm):

1. Compact Size:
   • The small size (T5x20mm) allows it to fit easily into tight spaces in electronics and power circuits, making it suitable for use in small devices or equipment.
2. Visual Inspection:
   • The glass tube provides easy visual inspection of the fuse. When the fuse blows, the filament inside the glass is visibly broken, making it easy to identify the need for replacement.
3. Fast Acting:
   • The fast-acting nature of the fuse ensures quick protection, preventing damage to sensitive components in case of an overcurrent situation.
4. Reliable Protection:
   • The fuse is a reliable way to safeguard circuits from overcurrent, offering an inexpensive method to protect expensive or sensitive electronic components from damage.
5. Versatile Use:
   • It is widely used in a variety of consumer electronics, appliances, and industrial circuits, offering versatile protection for many applications.

Disadvantages of Glass Fuse 5A – 250V (Size T5x20mm):

1. Non-Resettable:
   • Once the fuse blows, it cannot be reused and must be replaced. Unlike resettable fuses (such as PTC thermistors), the glass fuse is a one-time protection solution, making it less convenient for certain applications.
2. Size Limitation:
   • The T5x20mm size might not be suitable for high-current applications requiring larger fuses. For higher currents, a larger fuse might be necessary.
3. Breaking Capacity:
   • The IR (Interrupting Rating) of the fuse is typically limited, meaning it can only safely interrupt certain amounts of fault current. In some industrial applications with higher fault currents, a higher-rated fuse may be required.
4. Fragility:
   • Being made of glass, the fuse is somewhat fragile and may break under physical shock or vibration, making it unsuitable for high-vibration environments.