Thermal Fuses

What are thermal fuses?

Thermal fuses, also called thermal cutoffs, are a safety device used in electrical circuits to provide protection against appliances overheating. Thermal fuses are normally supplied in an axial or radial package, although some thermal fuses are now available as a chip.

How do thermal fuses work?

Thermal fuses work in a similar way to electrical cartridge fuses; when the conditions exceed a certain limit, the circuit will be broken. For thermal fuses, the limit is based on temperature. Thermal fuses typically contain a small pellet within them or have a thin piece of wire which melts at a certain temperature. When the pellet or piece of wire melts, the circuit breaks. This is called 'blowing out' or 'burning out'.

Single-use thermal fuses and resettable thermal fuses

Most thermal fuses are single-use and non-resettable. Once the pellet or piece or wire has melted, the thermal fuse will need replacing before you can operate your appliance again. Resettable fuses are available but tend to have a higher upfront cost than single-use counterparts. For resettable fuses, when the wax pellet within melts, the circuit is broken. However, as the appliance cools, the wax pellet will cool and solidify. This will complete the circuit again and your appliance can be used.

What are thermal fuses used for?

Thermal fuses are used to protect appliances from overheating and can be found in domestic and industrial applications. They are a safety device that helps to prevent fires. For example, thermal fuses can be found in hairdryers, tumble dryers and coffee machines.

What is the difference between functioning temperature and holding temperature?

All thermal fuses have a holding temperature rating and functioning temperature rating. These are key measurements to consider when choosing the right thermal fuse for your application. The holding temperature, normally measured in Celsius, defines what temperature the fuse can operate at continuously without blowing. This is the limit of the safe temperature range for the fuse. The functioning temperature is the lowest temperature rating (also in Celsius) at which the thermal fuse will blow and the circuit will break.

...
อ่านเพิ่มเติม อ่านน้อยกว่า

คัดกรอง / Filters

กำลังดูสินค้า 41 - 53 รายการจาก 53 รายการ / Viewing 41 - 53 of 53 products
ผลการค้นหาต่อหน้า / Results Per Page
รายละเอียดสินค้า / Description ราคา / Price Functioning Temperature Holding Temperature Maximum Current Voltage Rating Lead Orientation Series Body Diameter Body Height Body Length Body Width Wire Diameter Wire Length
RS Stock No. 712-7307
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EYP1BF115
Brand :Panasonic
THB51.412
Each: (In a Pack of 10)
Units
+115°C +90°C 4 A 250V ac Axial - 2.2mm 6mm 6mm - 0.53mm 38mm
RS Stock No. 712-7332
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EYP05BE145
Brand :Panasonic
THB52.118
Each: (In a Pack of 10)
Units
+145°C +125°C 5 A 250V ac Axial - 1.8mm 5mm 5mm - 0.53mm 38mm
RS Stock No. 124-5057
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.A1-5AF
Brand :Limitor
THB34.226
Each: (In a Pack of 5)
Units
+102°C +63°C 5 A 250V ac Radial A-5A-F - 8mm 6.6mm 2.6mm 0.6mm -
RS Stock No. 176-9378
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SM 110 A0
Brand :Limitor
THB31.616
Each: (In a Pack of 5)
Units
+115°C +80°C 2 A 250V ac Axial - 2.5mm 9mm - - 0.6mm 38mm
RS Stock No. 111-7803
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SWTC-208-3535
Brand :Selco
THB58.249
Each: (In a Pack of 10)
Units
+98°C +73°C 10 A 250V ac Axial SWTC Series 4mm 10mm - - 1mm 35mm
RS Stock No. 712-7301
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EYP1BF134
Brand :Panasonic
THB13.834
Each: (In a Pack of 10)
Units
+134°C +105°C 4 A 250V ac Axial - 2.2mm 6mm 6mm - 0.53mm 38mm
RS Stock No. 124-5058
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.A2-3AF
Brand :Limitor
THB34.362
Each: (In a Pack of 5)
Units
+115°C +78°C 3 A 250V ac Radial A-3A-F - 6.3mm 6.2mm 2.5mm 0.6mm -
RS Stock No. 797-6042
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SF 119 R
Brand :Limitor
THB30.043
Each: (In a Pack of 10)
Units
+121°C +106°C 15 A 250V ac Axial - 4mm 8.5mm - - 1mm 18.5mm
RS Stock No. 797-6049
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SF 090 R
Brand :Limitor
THB33.381
Each: (In a Pack of 10)
Units
+94°C +79°C 15 A 250V ac Axial - 4mm 8.5mm - - 1mm 18.5mm
RS Stock No. 797-6030
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SF 229 R
Brand :Limitor
THB28.24
Each: (In a Pack of 10)
Units
+229°C +200°C 15 A 250V ac Axial - 4mm 8.5mm - - 1mm 18.5mm
RS Stock No. 124-5059
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.A2-5AF
Brand :Limitor
THB37.664
Each: (In a Pack of 5)
Units
+115°C +75°C 5 A 250V ac Radial A-5A-F - 8mm 6.6mm 2.6mm 0.6mm -
RS Stock No. 797-6046
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SF 070 R
Brand :Limitor
THB31.121
Each: (In a Pack of 10)
Units
+73°C +58°C 15 A 250V ac Axial - 4mm 8.5mm - - 1mm 18.5mm
RS Stock No. 2508956226
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.NTE8076
THB70.76
Each
Units
- - - - - - - - - - - -
Related Products
NH fuses with combination sensorsWith insulated grip tabsOperating ...
Description:
NH fuses with combination sensorsWith insulated grip tabsOperating class gG (for cable and line protection)For selective line protection and system protection in functional building, industry and power supply companies.
NH fuse links with front indicatorThe front-face red ...
Description:
NH fuse links with front indicatorThe front-face red indicator signals when the fuse cuts outOperating class gG (for cable and line protection)For selective line protection and system protection in functional building, industry and power supply companies.
Semiconductor protection fusesOperating class gR (full-range semiconductor protection)With ...
Description:
Semiconductor protection fusesOperating class gR (full-range semiconductor protection)With blade contacts, for installation in NH fuse bases or load switchesSITOR NH fuse links are designed for the overload and short circuit protection of cables, wires and power rails as well as ...
High quality contacts for low power lossFitted with ...
Description:
High quality contacts for low power lossFitted with leaf spring fuse blown indicatorExternal contacts corrosion protectedVoltage conducting grip lugCadmium and Lead free.