The Difference Between Thermal Fuse Link and Thermal Cutoff Switch

A “thermal fuse link (Fusible alloy wire and Organic thermal fuse)” is essentially a one-time fusible cut off, heat-sensitive component that permanently breaks a circuit when it reaches a specific temperature. while a “thermal cutoff switch” is a bimetallic strip device that can potentially cut off itself after reaching a high temperature, allowing the circuit to reconnect once the temperature drops below a set point. both are used as safety mechanisms to protect against overheating, but the key difference is the “fuse link” is designed to only operate once, while the “cutoff switch” can potentially cycle multiple times.

SF129E SEFUSE 10A 250V Thermal Fuses 133 Degrees Celsius Thermal Cutoffs	Siguranță termica (Cut-Off or Temperature Fuse or TF) 184°C 15A 125VAC 10A 250VAC	Temperature Fuse Axial Type 122 TF Thermal Cutoff 115C 2A 250V
77 Degrees Celsius thermal fuse link Overheating protection element. Tensiune nominală: 250V ; Curent nominal: 10A ; Rated Operating temperature: 77°C. Features & Advantages: Strong stability & Good conductivity & Long service life & Flame retardant insulation. Widely Application: AEC77E Thermal Fuses are used in hair dryers, mașini de gătit orez, irons, frigidere, coffee makers, microwaves, ovens and other devices. Humanized packaging for easy storage and use. Please confirm the temperature degree, voltage and amp before purchasing. Is Discontinued By Manufacturer ‏ : ‎ No Package Dimensions ‏ : ‎ 5.59 x 1.97 x 0.67 inches; 0.01 ounces Date First Available ‏ : ‎ December 26, 2016 Manufacturer ‏ : ‎ China YAXUN Best Sellers Rank: #2 n Tools & Home Improvement (See Top 10 in Tools & Home Improvement)#6 in Cartridge Fuses

KSD9700 250V 5A 15~150 Degree Bimetal Disc Thermal Cutoff Switch

bimetallic strip thermal cutoff switch device For electric Fan heaters

Thermal Fuse Link and Thermal Cutoff Switch type

Key points about thermal fuse links:
One-time use: Once activated by excessive heat, the fusible link melts and permanently breaks the circuit, requiring replacement.
Simple design: Typically consists of a low-melting point alloy that melts when heated above a predetermined temperature.
No reset function: Cannot be reset manually after activation.

KitchenAid OE KSD301-160 Microwave Thermal Cutoff Switch KMCS1016GSS

Replacement 279769 Thermal Cut-Off for Crosley, Estate, Kenmore, Kitchenaid, Roper, Whirlpool Dryers

Normally Closed / Open Thermostat Thermal Cut-Off 50°C to 150°C

Key points about bimetallic thermal cutoff switches:
Resetabil:
When the temperature drops below the set point, the switch contacts reconnect, allowing current to flow again.
More complex design:
Often uses bimetallic strips that bend or expand when heated, causing the switch to activate.
Potential for multiple cycles:
Can be used in applications where temporary overheating may occur, unlike a thermal fuse link.

The Thermal Cutoff Switch with SPST-NC-NO contact configuration and quick connect terminals.
1000VAC for One minutes or more between non-live metal parts and terminals dielectric strength;
100MΩ or More between the non-live metal parts and terminals insulation resistance;
12 month limited warranty *view Terms & Conditions for details;
96% of customers would recommend to a friend;
Aplicații
Sensing & Instrumentation, Automotive Systems, Automation & Process Control
Switching Temperature: 150°C
Contact Operation: Normally Closed
Reset Temperature: 135°C
Sensor Terminals : Quick Connect
Contact Rating : 125VAC/15A, 250VAC/10A, 250VAC/16A

Thermal Fuse Link and Thermal Cutoff Switch Function and Application