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I speculate this is just barely an EE question, but I'll risk it anyway:

I'm replacing a set of 175C 10A thermal fuses (with 172C 10A actually). At this temperature / current range, do we need special high-temp crimps or will any ol' ebay copper crimps do?

EDIT: Good comments, some clarifications:

  • application is an electric single-burner mini stovetop
  • stovetop wire insulation is in excellent shape and will shroud crimps
  • crimp material suggestions welcome and appreciated
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    \$\begingroup\$ Since portions of the terminal are un-insulated anyway, you could just use fully un-insulated terminals and not worry about it. They might be cheaper as well. \$\endgroup\$
    – crj11
    May 3, 2018 at 19:57
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    \$\begingroup\$ Presumably you are protecting something important against over-temperature. The something important situation is not one to use anything "Any old eBay crap", but a situation to use the right materials and tools, such that you know by the manufacturers specifications of your crimp connections that everything will hold under all of the stresses; electrical, mechanical or thermal and avoid unwanted breaks, shorts or other failures. \$\endgroup\$
    – Asmyldof
    May 3, 2018 at 20:12
  • \$\begingroup\$ Thanks for the comments. I've added some clarifications \$\endgroup\$
    – Malachi
    May 3, 2018 at 20:20
  • \$\begingroup\$ Can you not buy the crimps at a hardware store or electrician supply house near you? \$\endgroup\$
    – mkeith
    May 3, 2018 at 20:25
  • \$\begingroup\$ @mkeith possibly. As long as I don't burn the house down with the stuff I buy lol \$\endgroup\$
    – Malachi
    May 4, 2018 at 0:12

1 Answer 1

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Copper being soft metal, may or may not be poor crimp material for this application. Some are silver plated brass, , stainless steel, some copper. It depends on the mating materials , ruggedness, operating conditions and tooling.

It MUST be capable of a 5 pound pull test without fatique on resistance or strength. It must be a gas tight fitting, so that the mating surfaces do not oxidize and must be done with proper tooling for consistency.

Commercial equipment may use a spot welder but a high quality gas-tight crimp machine is cheaper. There are many material types depending on other specs which were not given in the question, such as budget,qty. & reliability.

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  • \$\begingroup\$ Wow, intense! I'm just a cheap guy trying to help out my cheap friend and fix the little stove for as few bucks as possible. Was hoping for a budget of $10 but if that's not viable in a safe way, abort! abort! \$\endgroup\$
    – Malachi
    May 3, 2018 at 23:52
  • \$\begingroup\$ you might learn the intense details of the perfect crimp or fail miserably \$\endgroup\$
    – Tony Stewart EE75
    May 4, 2018 at 0:20
  • \$\begingroup\$ The cost can be pennies with the right crimp tool \$\endgroup\$
    – Tony Stewart EE75
    May 4, 2018 at 4:19

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