Thermal Switch identification

[JP-Stereo]

Hi, a transformer in a power supply is protected by a thermal switch that seem pretty standard:

BW-B2D-50K



BW-B2D are produced by several manufacturer, mostly in Asia.
But when at the "-50K" temperature specification, all the current ones on the web are rated in 'C.

Anyone have an idea what is the terrestrial equivalent of this "50K" ?

[Tom Phillips]

...Anyone have an idea what is the terrestrial equivalent of this "50K" ?

Well, It's certainly not 50° Kelvin.
A google search for the complete part number produces no hits If it were on my bench, I would just replace it with a commercially available thermal fuse of the appropriate temperature rating. (If it were my personal amp, I would probably just jumper over the fuse but I would not make that suggestion to others)

Here is a link to an few discussions about thermal fuses: https://music-electronics-forum.com/...l-fuse-limiter See post #10 for actual temperature suggestions.

I'll leave it to you to decide on the temperature rating appropriate for your project.
Cheers,
Tom