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EEVBlog 121GW Discussion thread

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skyjumper:
Hi All, this weekend I blew the 400mA 600V fuse. I'm in the US, and Dave's fuse pack would take some time to get here. I see lots of 600V 500mA fuses available, not so much with the 400mA. Could I safely use a 500mA fuse instead?

Wytnucls:
The range is 500mA, so the 500mA 600V fuse is fine, if it has a FF rating (Fast) and a high breaking capacity (10kA).
6x32mm, rated for AC/DC (UL248-1)

skyjumper:
Thanks very much, I thought as much but this makes me wonder why there is a 400mA fuse to begin with? Although I did end up finding some 400mA @ 600V, are these acceptable:

https://www.amazon.com/gp/product/B0891P5XMM/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Wytnucls:
Stick to good brands, like Littelfuse, Cooper Bussmann or Siba if you can, otherwise examine the datasheet carefully for compliance.
The manual recommends  cryptically ASTM HV610.0.4 400 mA (600V) or HV620.0.4(1000V) A/500 mA current input fuse (sic)

skyjumper:

--- Quote from: Wytnucls on March 22, 2021, 09:15:23 pm ---Stick to good brands, like Littelfuse, Cooper Bussmann or Siba if you can, otherwise examine the datasheet carefully for compliance.
The manual recommends  cryptically ASTM HV610.0.4 400 mA (600V) or HV620.0.4(1000V) A/500 mA current input fuse (sic)

--- End quote ---

Ah okay, well if 1000V fuse is acceptable then there are many 500mA to choose from. Thanks.

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