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 1 - 20 รายการจาก 64 รายการ / Viewing 1 - 20 of 64 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. 176-9148
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 80 05100
Brand :Limitor
THB180.83
Each
Units
+80°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 204-7427
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Q82 A 80 05 100
Brand :Limitor
THB183.58
Each
Units
+80°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 176-9160
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 100 05100
Brand :Limitor
THB180.83
Each
Units
+100°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 176-9205
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 140 05100
Brand :Limitor
THB135.51
Each
Units
+140°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 176-9132
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 70 05100
Brand :Limitor
THB184.43
Each
Units
+70°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 204-7449
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Q82 A 100 05 100
Brand :Limitor
THB183.58
Each
Units
+100°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 204-7405
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Q82 A 70 05 100
Brand :Limitor
THB184.43
Each
Units
+70°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 616-9969
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Q82 A 125 05 100
Brand :Limitor
THB225.58
Each
Units
+125°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 712-7310
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EYP1BF138
Brand :Panasonic
THB7.915
Each: (In a Pack of 10)
Units
+139°C +110°C 5 A 250V ac Axial - 2.2mm 6mm 6mm - 0.53mm 38mm
RS Stock No. 712-7297
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EYP2BN127
Brand :Panasonic
THB9.998
Each: (In a Pack of 10)
Units
+134°C +100°C 4 A 250V ac Axial - 3mm 9mm 9mm - 0.6mm 38mm
RS Stock No. 111-7300
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.STC-183
Brand :Selco
THB53.059
Each: (In a Pack of 10)
Units
+84°C +60°C 10 A 250V ac Axial STC Series 4mm 10.5mm - - 1.024mm 35mm
RS Stock No. 176-9154
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 90 05100
Brand :Limitor
THB194.11
Each
Units
+90°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 176-9126
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 60 05100
Brand :Limitor
THB180.83
Each
Units
+60°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 797-6055
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SF 129 R
Brand :Limitor
THB34.185
Each: (In a Pack of 10)
Units
+133°C +118°C 15 A 250V ac Axial - 4mm 8.5mm - - 1mm 18.5mm
RS Stock No. 176-9198
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 125 05100
Brand :Limitor
THB180.83
Each
Units
+125°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 176-9384
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SM 126 A0
Brand :Limitor
THB22.988
Each: (In a Pack of 5)
Units
+131°C +96°C 2 A 250V ac Axial - 2.5mm 9mm - - 0.6mm 38mm
RS Stock No. 176-9182
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 110 05100
Brand :Limitor
THB197.82
Each
Units
+110°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 176-9104
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.P82 55 05100
Brand :Limitor
THB180.83
Each
Units
+55°C - 2.5 A 250V ac Radial - - 8mm 17.5mm 4mm 0.51mm 100mm
RS Stock No. 176-9283
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SF129E
Brand :Limitor
THB26.592
Each: (In a Pack of 5)
Units
+133°C +118°C 10 A 250V ac Axial - 4.2mm 11mm - - 1mm 55mm
RS Stock No. 195-8752
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.NIS6350MT1TXG
THB14.925
Each (On a Reel of 3000)
Units
- - 3 A 5V - NIS6350 - 0.75mm 3.1mm 3.1mm - -
Related Products
Low let through currentLow quenching timeLow quenching I2t ...
Description:
Low let through currentLow quenching timeLow quenching I2t valueLow excess voltage valueLow thermal load on fuse and holderSuitable for 3-phase applications.
Low let through currentLow quenching timeLow quenching I²t ...
Description:
Low let through currentLow quenching timeLow quenching I²t valueLow excess voltage valueLow thermal load on fuse and holderBreaking capacity 50kA at 500VacSuitable for 3-phase applications.
These fuses are designed for : “General purpose ...
Description:
These fuses are designed for : “General purpose use” protection (gG type) or motor protection (gM type). This fuse range insures an excellent current limitation for all overloads on a large range of applications. Their size cannot allow exchange by ...
Thermal fuses protect equipment against fire or thermal ...
Description:
Thermal fuses protect equipment against fire or thermal damage due to overload or overcharge. Suitable for use with standard single phase supplies up to 250V (230V typical). Temperature gradient: 1°C per minute. Latches in a tripped state if used with ...