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Would any thermal fuse cutoff for 216°C work as a replacement for the fuse in the picture below?

Fuse picture

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  • \$\begingroup\$ Alright, so I bought this amazon.com/gp/product/B0087ZRIAA/…, I just replaced it with the one that melted in my portable electric burner. Is there any other risk that may happen if I ONLY replaced the thermal fuse? I don't want my grandpa to use a device that may or may not explode. Also, the burner has a metal housing, so I'm not worried about it melting. \$\endgroup\$ – user3296002 Jul 29 '14 at 18:18
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Any similar 216°C thermal fuse with a 10A or better current rating and an appropriate voltage rating should be fine.

enter image description here

For example, a CANTHERM SDF DF216S, which is approved for use at 250V 10A or 15A depending on the safety agency.

enter image description here

If it's held in a clip or something like that, make sure the diameter is close enough that it will behave similarly thermally.

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  • \$\begingroup\$ Is there a difference between "X3" and "R3"? Also, it's held by a screw terminal. \$\endgroup\$ – user3296002 Jul 26 '14 at 22:34
  • \$\begingroup\$ The diameter of the clip? That last note is unclear, at least to me. Do you mean that if the fuse is held in a clip to make sure the thermal characteristics are similar between fuse and clip? Or that the clip is tightly holding the fuse maybe? \$\endgroup\$ – sherrellbc Jul 26 '14 at 22:40
  • \$\begingroup\$ X3 and R3- probably there is, and probably unique to that Chinese maker. Could be lead length, finish or something else. \$\endgroup\$ – Spehro Pefhany Jul 26 '14 at 22:51
  • \$\begingroup\$ @sherrellbc Yes, if it's held by a clip to a heatsink or a housing and you get a replacement that's too loose to follow the temperature or too tight to fit, it isn't going to do the job. \$\endgroup\$ – Spehro Pefhany Jul 26 '14 at 22:52
  • \$\begingroup\$ Ah, I see. I had the wrong impression of what this device was. So, the fuse heats up as your device heats and will interrupt current flow if too hot. I was thinking it was just a fuse that heated if too much current passed through it, so it did not make much sense to couple it to the system and potentially introduce more heat. Do these fuses have internal hysteresis? Otherwise it would seem like they would cycle on/off as they heated and cooled around their cut-ff temperature. \$\endgroup\$ – sherrellbc Jul 27 '14 at 11:23

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