[time-nuts] Re: HP-10811B thermal fuse

[Rsec Van der leij]

> On 20 Jan 2024, at 07:19, John or Susan via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> I am guessing something on the order of either 1/2 A slow-blow or 1 A regular fuse.

Some googling tells me it's a combination of a thermal fuse (115ºC) and a 1A slow-blow current limitter. Over time the wax in the fuse moves and eventually the fuse fails, after many thermal cycles.

If you are the belt and suspender type, you could use a 1A fuse in combination with a thermal cutout. 

Somebody suggests a Tamura E7F with a normal 5x20 glass fuse will fit, but you might have trouble finding them..

https://web.archive.org/web/20151127140920/http://www.tamurathermaldevice.co.jp/e/product_thermal-cutoff/e-f.html

-- 
Ruben