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This section provides an overview for temperature limit fuses as well as their applications and principles. Also, please take a look at the list of 14 temperature limit fuse manufacturers and their company rankings. Here are the top-ranked temperature limit fuse companies as of December, 2024: 1.SCHOTT North America, Inc, 2.Jaye Industry Co.,Ltd., 3.UKB Electronics Pvt. Ltd..
Table of Contents
Thermal cutoffs are components that detect abnormal heat generation in electronic equipment caused by internal failures or errors, and protect against overheating by melting themselves to cut off the current in the electronic circuit.
Thermal cutoffs generate almost no heat themselves, but rather they melt when the ambient temperature rises, thereby interrupting the current flow. When a thermal cutoff detects a temperature abnormality, it immediately interrupts the circuit current.
This can prevent smoke and fire from occurring in household equipment and automobiles. Once thermal cutoffs detect abnormal heat generation and shut down, they do not automatically resume conduction even if the ambient temperature decreases.
Thermal cutoffs are used to prevent hazardous conditions when the object to be measured becomes hot due to abnormal heat generation, etc., because they do not automatically return to normal operation once they detect a blown thermal cutoff. Specific applications are as follows:
In the automotive field, thermal cutoffs are used to protect the surface of coils in transformers and motors that may become hot due to circuit malfunctions, and in resistors used to prevent inrush currents in power circuits.
However, it should be noted that once a thermal cutoff blows, it does not automatically recover, so the electronic equipment cannot be used again.
There are two types of thermal cutoffs: fusible alloy-types using a fusible alloy as the thermosensing element and pellet types using a thermosensing element.
When the thermal cutoff reaches the melting point of the low-melting-point alloy, the alloy changes from a solid to a liquid. The fusible alloy that has become liquid separates into two spheres, thus interrupting the fuse's conduction path.
When the ambient temperature of the fuse rises, the temperature-sensitive pellet melts and liquefies, forcing a distance between the contact electrode and the lead wire, thereby interrupting the fuse's conduction path.
Most fusible alloy-type thermal cutoffs have a rated current from 0.5A to several A. Most temperature-sensitive pellet-type thermal cutoffs have a rated current from several A to 10A.
Nominal operating temperature is the temperature at which thermal cutoffs will blow when measured by the method defined in safety standards.
International IEC standards specify an error of plus or minus 0°C, plus or minus 10°C. In most cases, the nominal operating temperature is indicated on the body of the thermal cutoffs.
The ambient temperature at which thermal cutoffs can withstand a minimum of 168 hours without melting while the rated current continues to flow through them. Thermal cutoffs should be selected based on the current and life expectancy of the equipment in which they will be used.
The maximum temperature at which a thermal cutoff will not conduct again after it has blown. If a thermal cutoff continues to be used when the ambient temperature is above the operating temperature limit, the thermal cutoff may be destroyed.
There are two types of thermal cutoffs: axial and radial. Axial components have leads coming out from both ends of the component and are supplied with both ends of the leads taped. Radial components have leads coming out from one side of the component and are supplied with the leads coming out in one direction taped together.
*Including some distributors, etc.
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Selco Products was founded in 1958 and is headquartered in Reno, Nevada. The ISO 9001:2008-certified company is a global manufacturer of customized electronic components. The company serves several markets including medical, HVAC, electronics, and aerospace OEMs and end-user companies, leveraging JIT delivery, Kansan, and engineering support. Electronics offerings include thermistors, temperature controls, panel instruments, and signal converters. Non-electronics include buttons, knobs, and other accessories used in digital and analog electronics controls.
SCHOTT North America, Inc., founded in 1884 and located in Rye Brook, New York, is a manufacturer of specialty glass and glass-ceramics. They offer a diverse range of products that include ambient light, borofloat, glass door systems, pharmaceutical type I glass tubing, and nextrema. SCHOTT's specialty glass and glass-ceramics offer unique properties such as high heat resistance, chemical durability, optical clarity, and thermal shock resistance, making them crucial components in technological and manufacturing processes. Their products have diverse applications across industries, including lighting and illumination, laboratory and pharmaceutical settings, home appliances, industrial and process equipment, electronics, and optics.
Advance Technical Components, Inc., founded in 1979 and headquartered in Schaumburg, Illinois, United States, is a manufacturer, stocking distributor, and supplier of thermoelectric controls. The company's products include Therm-O-Disc thermal fuses, U-15 commercial thermostats, and disc thermostats, and it also offers products that are designed in the United States and manufactured in Hong Kong. These products are used in electronic devices, home appliances, and various commercial and industrial equipment. It also offers contract manufacturing for original equipment and original design manufacturers, as well as private label production.
The SCHURTER Company was founded in 1933 and operates out of Lucerne, Switzerland. SCHURTER is an innovator and producer of electronic components for many markets including industrial equipment, medical equipment, automotive, avionics and space, data and communication, and energy. SCHURTER products and solutions include: circuit protection, connectors, switches, EMC, custom components, HMI solutions, PCAP touchscreens, resistive touchscreens, capacitive switches, membrane switches, and a series of smart products including Smart Connector DS11 PEM, Smart Connector DT31 external, and Smart Ecosystem.
Akahane Electronics Corporation, established in 1960 and headquartered in Tokyo, Japan, is a manufacturer and supplier of resistors. Their diverse product range includes general purpose resistors used in electronic circuits, appliances, and equipment, precision resistors catering to applications requiring high accuracy like test and measurement equipment and medical devices, and thick film resistors suitable for demanding conditions such as automotive and industrial applications with high temperature and humidity resistance. Akahane Electronics' resistors find widespread use in electronics, automotive, and various industrial sectors, providing accurate solutions for diverse applications.
UKB Electronics Pvt. Ltd. was established in 1996 in Noida, Uttar Pradesh, India, as a manufacturer and exporter of electronic products. The company provides various products, including UL wire, rubble cable and wire, VDE cable, and BIS cable, among others. The products are utilized for various applications, including indoor installation in surface-mounted or embedded conduits, building wires, power cords, and domestic electrical wiring, as well as for field foundation and bi-directional communications between field devices and control systems. The company serves various industries, including telecommunications, nuclear power, aerospace, renewable energy, mining, and medical.
Jaye Industry Co., Ltd. is a manufacturer of industrial and commercial heating elements, established in 2008 and based in Huizhou, China. Their product line-up includes heating elements for home appliances such as stoves, washing machines, and thermostats alongside elements intended for industrial applications such as flange immersion heaters which may be used to heat tanks of liquid for applications such as water treatment or beverage manufacturing. The company supplies components domestically and to larger international companies such as Coca Cola, Walmart, and Whirlpool, among others.
Jiangsu Changsheng Electric Appliance Co., Ltd., established in 1997 and headquartered in Jiangsu, China, is a manufacturer of circuit breakers for equipment protection. The company's wide product range includes thermal protection switches, thermostats, and thermal fuses, which are used in a wide variety of electronics, home appliances, and industrial equipment. It has the capacity to produce 400 million thermal overload relays every year, making it one of the largest thermostat manufacturers in China.
Saftty Electronic Technology Co. Limited is a manufacturer and supplier of industrial thermal protectors that was established in Guangzhou, Guangdong, China, in 2010. The company offers its ST06 series small thermal protectors for embedded installations, ST01 series round thermal protectors designed to TUV and UL standards, and BW series plastic thermal protectors for providing safety from overcurrent and over-temperature issues. The company’s products are used to manufacture transformers, motors, and portable power tools.
Ningbo Best Group Co. Ltd. is a manufacturer of RoHS certified electronic and acoustic components that was established in 1997 in Ningbo, Zhejiang, China. The company fuses switches for protecting circuits, programmable buzzers for producing alarm signals, and terminal blocks for connecting wire or cable assemblies. It also offers battery holders and DC motors for converting or providing power, and custom engineering services for unique projects. The company’s products are used mainly by clients in the consumer electronics, telecommunications, and automotive industries.
Dongguan Tianrui Electronics Co., Ltd., founded in 2001 and headquartered in Dongguan City, China, is a manufacturer and supplier of circuit protection devices. The company's product line includes a range of over 5,000 different fuses and has a production capacity of 5,000,000,000 fuses per month. These products are used in the manufacture of electronic devices, home appliances, and industrial machinery. It also offers custom manufacture and welcomes orders from original equipment and original design manufacturers as well as for private label production.
Taizhou Mingjia Electrical Co., Ltd., founded in 2001 and headquartered in Zhejiang Province, China, is a manufacturer and supplier of thermostats and related devices. The company's product line includes PTC thermometers, refrigerator defrost timers, and rotary switches. These products meet ROHS environmental requirements and are used in the manufacture of electronic devices, home appliances, and welding machines. It also offers custom manufacture and welcomes orders from original equipment and original design manufacturers as well as for private label production.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | SCHOTT North America, Inc |
36.4%
|
| 2 | Jaye Industry Co.,Ltd. |
9.1%
|
| 3 | UKB Electronics Pvt. Ltd. |
9.1%
|
| 4 | Akahane Electronics Corporation |
9.1%
|
| 5 | Saftty |
4.5%
|
| 6 | Ningbo Best Group Co.,Ltd. |
4.5%
|
| 7 | Advance Technical Components, Inc. |
4.5%
|
| 8 | Dongguan Tianrui Electronics Co., Ltd. |
4.5%
|
| 9 | Jiangsu Changsheng Electric Appliance Co., Ltd. |
4.5%
|
| 10 | Canadian Thermostats & Control Devices, Ltd. |
4.5%
|
Derivation Method
The ranking is calculated based on the click share within the temperature limit fuse page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
4 | 36.4% |
|
United States of America
|
3 | 27.3% |
|
Switzerland
|
1 | 9.1% |
|
Japan
|
1 | 9.1% |
|
India
|
1 | 9.1% |
Canada
|
1 | 9.1% |
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