Glass Fuse

Why Choose Us?

Rich Experience

Wide Range of Products

The products ranges miniature fuses, micro fuses, SMD fuses, power fuse, plug fuse, high voltage fuse, blade fuse, fuse holders, thermostat and thermal sensors for circuit protection and thermal protection solutions.

Professional Team

We have a stable R&D team with 30 people, each with more than 5 years' work experience. They can independent research and develop products and equipment.

Our Certificates

With vertically integrated manufacturing facilities certified TS16949, ISO9001, and ISO14001, All the products are lead-free that complies with RoHS Directive and REACH regulations. The products are extensively certified by CCC, VDE, cULus, PSE, KC, TÜV, CQC, ect.

What is Glass Fuse

Glass and Ceramic Fuses are often used to protect appliances and consumer electronics. As electronic equipment becomes smaller, the circuits and components become more delicate and easily damaged. Fuses are the preferred method of protection due to their accuracy, small size and reliability. Fuses are available in a wide variety of amp ratings to provide precise protection. Generally, two sizes of user-replaceable fuses are found: the 1/4” x 11/4” and 5 x 20mm. Each is available in a variety of volt and amp ratings. In a glass fuse, the element is visible, and this makes inspection easy, while a ceramic fuse is opaque. A glass fuse has a low breaking or rupturing capacity. What this means is that the fuse element melts when there is a high current or voltage. It is therefore not suitable for appliances and equipment’s that draw a lot of current.

3.6 X10mm Glass Fuses
In a world where compact and efficient components are essential for modern electronic devices, our 3.6x10mm glass fuses stand out as the perfect solution. Designed with a glass body in a compact...
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5x20mm Glass Fuses
Our 5.2x20mm glass fuses are designed to deliver reliable supplementary protection for appliances and various utilization equipment, ensuring the safety and longevity of your components and...
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6x32mm Glass Fuses
6x32mm Glass Fuses Fast Blow 6G/6F
6x32mm Glass Fuses Slow Blow 6S/6T
Our 6x32mm glass fuses are engineered to deliver superior performance and reliability in high-current applications.
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Differences between Glass and Ceramic Fuses

Material:
- Glass Fuses: Made from a transparent glass tube, allowing for visual inspection of the fuse element.
- Ceramic Fuses: Made from a ceramic material, which is opaque and generally more durable.

Heat Resistance:
- Glass Fuses: Typically have lower heat resistance compared to ceramic fuses and may fail at lower temperatures.
- Ceramic Fuses: Better suited for high-temperature applications due to their higher melting point and better thermal stability.

Current Rating:
- Glass Fuses: Often available in lower current ratings and are commonly used in household electronics and appliances.
- Ceramic Fuses: Available in a wider range of current ratings, including higher ratings for industrial or heavy-duty applications.

Breaking Capacity:
- Glass Fuses: Generally have lower breaking capacity, which means they may not handle high fault currents as effectively as ceramic fuses.
- Ceramic Fuses: Designed to withstand higher fault currents without rupturing, making them suitable for more demanding applications.

Cost and Availability:
- Glass Fuses: Often less expensive and widely available, especially for smaller applications.
- Ceramic Fuses: May be more expensive but are preferred in applications where durability and performance are critical.

What are the main parameters of glass tube fuses?

Voltage rating

The voltage rating of the fuse must be equal to or greater than the maximum voltage at which the circuit will be broken. Because of the low resistance of the fuse, the voltage rating of the fuse only becomes important if the fuse tries to blow. When the fuse element melts, the fuse must ensure that it can be disconnected quickly and extinguish the arc, preventing the open circuit voltage from re-activating the arc through the disconnected fuse element.

Current rating

The rated current indicates the current carrying capacity of the fuse under a set of test conditions. Each fuse will display the rated current, either as a number, letter, or colored label. The meaning of each label can be found in the product data-sheet.

Breaking capacity/ interrupt level

The fuse must be able to break a faulty circuit without damaging the surrounding circuit. Breaking capacity is the maximum current value at which a fuse can safely break a circuit at the rated voltage without damage. The breaking capacity of the fuse must be equal to or greater than the maximum fault current that can occur in the circuit.

Fuse integration

The fuse integration is the energy required by the fuse element, also known as the fuse value i2t. The structure, material, and cross-sectional area of the fuse element determine the value each series of fuses uses different materials and component configurations according to the rated current value, determining the i2t of each fuse

Rated voltage of agc glass tube fuse agc

The rated voltage of the Auto Fuse Assortment is the maximum working voltage under the normal working state of the Glass Fuses 30mm Fast Blow Tube.
The fuse can only be used in circuits less than or equal to the service voltage, that is, the working voltage of the selected fuse must be greater than the normal voltage in the circuit. For example, 3a125v fuse can never be used in 250V withstand voltage circuit, but can be used in 125V and below circuits.

Calculate the rated current of fuse in

Rated current in = IRM / (SC * TC)
In represents the rated current of replacement glass tube fuses
IRM represents the maximum operating current in the circuit
TC represents the temperature decay rate (refer to the temperature curve)
The safety attenuation rate of American regulations is: SC -- 0.75
The safety attenuation rate of European regulations is: SC -- 0.9
The safety attenuation rate of the daily gauge is: SC -- 0.85
Main: The calculated in is the minimum rated current of the selected fuse, and the best rated current equal to or greater than in shall be selected.

Ambient temperature

Under the ambient temperature of 25 ± 5 ℃ at room temperature, the rated current of the fuse is not affected by the temperature. When the ambient temperature rises continuously, the rated current attenuation of the fuse will be greater when it works for a long time. When selecting the fuse tube, the influence of ambient temperature change on the fuse tube must be considered.
The increase or decrease of temperature will accelerate the fuse reaction and slow down the cargo. The curve is obtained through a large number of experiments.

The Role of Glass Fuses in Electrical Circuit Protection

Glass fuses are uncomplicated yet efficient components employed in electrical circuits to safeguard against potential harm caused by excessive current flow. The devices consist of a small glass tube with metallic terminals positioned at either end, along with an internal fusible wire. The underlying principle is easily understandable: if the electrical current passing through the fuse exceeds its designated limit, the internal wire undergoes a phase change, resulting in the disruption of the electrical pathway and thereby halting the circuit's operation.

Glass fuses hold significant relevance in safeguarding electrical circuits, which can be attributed to several reasons:

Overcurrent Protection: The fundamental purpose of glass fuses is to protect against excessive current flow. In the event of an unforeseen increase in electrical current, the fuse reacts by undergoing a phase change, leading to its melting and subsequent disruption of the circuit. This measure serves to mitigate the risk of high electrical current causing harm to the interconnected devices and wires. The absence of glass fuses or comparable protection mechanisms can lead to severe repercussions, including equipment malfunction and the outbreak of electrical fires.

Short Circuit Protection: Short circuit protection is designed to prevent the occurrence of short circuits, which arise when a low-resistance pathway is established within an electrical circuit. These phenomena can result in a sudden and substantial increase in electrical current, leading to extensive and severe damage. Glass fuses are engineered to respond promptly to short circuits, thereby safeguarding the integrity of your equipment and mitigating the risk of additional harm to the circuitry.

Safety: Safety is of utmost importance when dealing with electrical circuits, as it encompasses the well-being of individuals and the protection of property. Glass fuses play a crucial role in safeguarding the integrity and security of electrical systems. By deliberately breaking the circuit during instances of overcurrent or short circuit occurrences, these devices effectively reduce the likelihood of electrical fires, hazards related to electric shock, and various other potential safety concerns.

Cost-Effective Protection: Glass fuses offer a combination of effectiveness and cost-efficiency in providing protection. Compared to several alternative circuit protection devices, they exhibit a relatively low cost. This characteristic makes them a desirable option for a diverse array of applications, ranging from residential to industrial sectors.

Visual Indication: The transparency of glass fuses is a distinctive feature. The transparent glass tube allows for a visual examination of the fuse wire. The detection and replacement of a blown fuse are facilitated by the quick visual confirmation of a melted wire within the fuse.

Types of Glass Fuses

There are several types of glass fuses, each designed to meet specific electrical and thermal requirements. The most common types include:

Fast-acting fuses: These fuses respond quickly to overcurrent conditions and are designed to protect sensitive electronic components from damage. They are commonly used in devices with semiconductor components, such as computers, televisions, and audio equipment.

Slow-blow fuses: Also known as time-delay fuses, slow-blow fuses are designed to handle brief current surges without blowing. They are typically used in circuits with inductive loads, such as motors and transformers, which can generate temporary current surges during startup or operation.

Very fast-acting fuses: These fuses provide extremely fast response times to protect against high-speed, high-energy events, such as voltage spikes or electrostatic discharges. They are often used in specialized applications like telecommunications equipment, medical devices, and military systems.

Applications of Glass Fuses

Glass fuses are used in a wide range of applications due to their versatility, low cost, and ease of installation. Some common applications include:

Consumer electronics

Glass fuses are frequently used in consumer electronics like TVs, radios, and gaming consoles to protect sensitive components from damage due to overcurrent conditions.

Automotive systems

Fuses are an essential component of automotive electrical systems, protecting critical components such as engine control modules, lighting systems, and power accessories from damage.

Industrial equipment

Glass fuses are used in various industrial equipment and machinery, including manufacturing automation systems, power distribution panels, and motor control centers, to safeguard against electrical faults and ensure safe operation.

Under what circumstances are ceramic and glass fuses interchangeable?

A ceramic and glass fuse can be interchanged ONLY if their current and voltage ratings, current-time curve, and standards markings (UL, CE, etc.) are the same. VERY important:
If the fuse to be replaced is a High Rupture Capability (HRC) ceramic-bodied fuse, it MUST be replaced by an identical HRC fuse. Substituting a regular fuse in a circuit that may be subjected to high fault currents can cause it to explode and arc over. A HRC fuse safely blows before the fault current can climb to dangerous (arc-flash) levels. A standard fuse in this application may fail to safely break the circuit, arcing across the body and creating a dangerous high-energy arc flash. HRC fuses are typically used in high-power equipment. They can also be found in well-made portable meters to prevent accidental shorts from exploding the meter leads and meter. Substituting a regular glass or ceramic fuse (even with otherwise identical voltage and current ratings) in these applications can result in severe equipment damage, injury, and even death.

Our Factory

XC Electronics (Shenzhen) Corp. Ltd is a leading industrial manufacturer that develops and manufactures all kinds of fuse and thermostat since 2002. The Hong Kong company named XGH ELETRIC COMPANY was founded in 1996. The products ranges miniature fuses, micro fuses, SMD fuses, power fuse, plug fuse, high voltage fuse, blade fuse, fuse holders, thermostat and thermal sensors for circuit protection and thermal protection solutions that are widely used in powers, household appliances, lightings, batteries, new energy resources, automotive equipment, communications devices and computers.

FAQ

Q: What are the sizes of glass and ceramic fuses?

A: OptiFuse offers a variety of sizes for glass and ceramic fuses, with the most common being:
3.6x10m Fuses / 5x15mm Fuses / 5x20mm Fuses / 6.3x32mm Fuses / 10x38mm Fuses (Industrial Size)

Q: How can you tell if a glass/ceramic fuse is blown?

A: To tell if a glass or ceramic fuse is blown, start with a visual inspection for glass fuses; look through the transparent body to see if the internal metal link is broken or melted. For ceramic fuses, visual inspection won't work, so it's best to use a multimeter or dedicated fuse tester to check for continuity and confirm whether the fuse is still functional.

Q: Can I replace a ceramic fuse with a glass fuse?

A: It is generally not recommended to replace a ceramic fuse with a glass fuse due to their differing properties and performance characteristics. Ceramic fuses are designed to handle higher currents and temperatures, and they offer better arc-quenching capabilities because of their sand-filled structure. In contrast, glass fuses may not withstand the same level of electrical stress. If you consider replacing a fuse with one that is not listed by the manufacturer as an acceptable substitute, it is advisable to consult an electrical professional to ensure that you meet the protection requirements for your circuit.

Q: What happens if you use a lower amp or volt fuse?

A: Using a fuse that is not rated to meet the needs of your system can lead to several issues. First, a fuse with a lower amp rating may blow frequently during normal operation because it cannot handle the circuit's required current, resulting in constant interruptions and downtime. Additionally, if the voltage rating is lower than necessary, the fuse may not effectively protect against overcurrent situations, potentially allowing excessive current to pass through and causing damage to connected equipment. Furthermore, using an undersized fuse can generate excessive heat, increasing the risk of fire or damage to wiring and components.

Q: What are glass fuses used for?

A: Glass and ceramic tube fuses are often used to protect appliances and consumer electronics. As electronic equipment becomes smaller, the circuits and components become more delicate and easily damaged. Fuses are the preferred method of protection due to their accuracy, small size and reliability.

Q: Is a glass fuse the same as a normal fuse?

A: Glass fuses have a low thermal stability and shatter in high-heat conditions. Ceramic fuses, on the other hand, can withstand high temperatures and are more thermally stable. Ceramic fuses, unlike glass fuses, are also often filled with a filler like sand to prevent the formation of a conductive film.

Q: Are glass fuses still used?

A: These are still used in consumer units in some parts of the world, but are becoming less common. While glass fuses have the advantage of a fuse element visible for inspection purposes, they have a low breaking capacity (interrupting rating), which generally restricts them to applications of 15 A or less at 250 VAC.

Q: Can you tell if a glass fuse is blown?

A: The glass tube forms a physical guard for the fuse, so that when it blows the molten metal does not cause damage or injury. A glass tube allows you to see when the fuse has blown: there will be a gap in the wire or a metallic smear on the inside of the glass.

Q: What are 10 amp glass fuses used for?

A: These small glass fuses are suitable for marine and automotive use. The glass fuses are sold in packs of 5 x 10 amp radio fuses. These small glass fuses are suitable for marine and automotive use.

Q: What amp is a glass fuse?

A: Electrical Glass Fuses - 1 Amp to 50 Amps.

Q: Are glass fuses polarized?

A: Fuses are not polarized, so it doesn't matter which tip touches which end. Since it's glass, we can visually inspect this fuse and see that it is still good.

Q: What do you use glass fuses for?

A: A glass fuse in a power system is a type of electrical fuse that consists of a glass tube containing a metal wire or filament. It serves as a protective device to prevent overcurrent conditions that could damage electrical equipment or create fire hazards.

We're well-known as one of the leading glass fuse manufacturers and suppliers in China. If you're going to buy high quality glass fuse at competitive price, welcome to get more information from our factory.

3 6 X10mm Glass Fuses, 6x32mm Glass Fuses