What is the purpose of this two pin component (circled)?

It looks to me like a jumper, but it seems strange that it would be so complex for just a jumper (that apparently does nothing). Sits between an AC input and a bridge rectifier.

enter image description here

  • \$\begingroup\$ Looks like you remove that part, could be interesting to see a photo of that configuration. I would guess it is for inserting a certain kind of current probe when testing, J11 designation is even weirder. \$\endgroup\$
    – PlasmaHH
    Aug 28, 2018 at 10:41
  • 13
    \$\begingroup\$ Looks like a horizontal spade connector receptacle. \$\endgroup\$
    – Jeroen3
    Aug 28, 2018 at 10:58
  • 4
    \$\begingroup\$ Post an image with a wider view of the PCB. \$\endgroup\$
    – Rev
    Aug 28, 2018 at 11:06
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    \$\begingroup\$ Leon Heller, If it was a fuse it shouldn't be labeled J14. \$\endgroup\$ Aug 28, 2018 at 11:46
  • 1
    \$\begingroup\$ Is that the only component on the board which looks like that? Is there a similar looking one located elsewhere? \$\endgroup\$
    – Mast
    Aug 28, 2018 at 18:56

1 Answer 1


It's a solderless spade connector, soldered to the PCB.

Like this: http://www.keyelco.com/product-pdf.cfm?p=681

enter image description here

(www.digikey.com Keystone: 3547)

  • \$\begingroup\$ Any suggestions on why it was used there? I thought those things were for removable ground connections, which is not the case here. \$\endgroup\$
    – Mast
    Aug 28, 2018 at 18:47
  • \$\begingroup\$ @Mast, maybe it's used as an auxiliary power input for standalone testing of the board? \$\endgroup\$ Aug 28, 2018 at 18:49
  • \$\begingroup\$ @BrockAdams Perhaps, but I'd have expected another one of those in the other AC track if that was the case. \$\endgroup\$
    – Mast
    Aug 28, 2018 at 18:50
  • \$\begingroup\$ @Mast, it might be offscreen. Wouldn't want 2 AC lugs in such close proximity. \$\endgroup\$ Aug 28, 2018 at 18:52
  • \$\begingroup\$ @BrockAdams Hah, good point. \$\endgroup\$
    – Mast
    Aug 28, 2018 at 18:55

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