blondiebass
Member
No worries, I figured there must be a different version out there. I think I found the right switch now. Consequently I have 2 switches for your amp if you ever need one let me know.
Adcom GFA 555 Power Switch (Rocker Switch)
- Thread starter Nanapull
- Start date
arts
Addicted Member
Wow, now that is an older version. Might have been intended more for commercial applications where looks count for nothing.
I am (intimately) familiar with what are generally known as the MKI & MKII models. I'm guessing this could be referred to as a MK0.5 model?
blondiebass
Member
I ended up getting the second set of switches from Adcomparts.com They are wrong also. I tried emailing them a couple times but no reply. Either way I'm still searching for the main power switch for the aforementioned MK0.5 model. If anyone could point me in the right direction I would be grateful!
Phloodpants
Member
Interesting, all the rack-mount GFA-555's I've seen so far have all used the same switch as later models.
The Carling RGSCC901 used in most GFA-555's is a compact design for a 16A switch. You seem to have the more common size for this type of rocker switch. There's actually plenty to choose from! And you can get slightly higher current rating than stock, which is good because sometimes GFA-555 switches weld themselves shut, due to the large in-rush surge current.
These rocker switches are a sort-of standard size. Can you measure the length and width of the cutout?
I think this one will work for you.
JWL22RAA
https://www.mouser.com/datasheet/2/295/JW-1663483.pdf
*Requires 20.5mm x 29.5mm cutout
The Carling RGSCC901 used in most GFA-555's is a compact design for a 16A switch. You seem to have the more common size for this type of rocker switch. There's actually plenty to choose from! And you can get slightly higher current rating than stock, which is good because sometimes GFA-555 switches weld themselves shut, due to the large in-rush surge current.
These rocker switches are a sort-of standard size. Can you measure the length and width of the cutout?
I think this one will work for you.
JWL22RAA
https://www.mouser.com/datasheet/2/295/JW-1663483.pdf
*Requires 20.5mm x 29.5mm cutout
Phloodpants
Member
*It should be noted that the Carling RGSCC901 used in most GFA-555's is rated 15A@250 VAC and 20A@125 VAC, while the NKK JWL is rated 16A@250 VAC and also 16A@125 VAC. The slightly lower rating of the NKK at 125 VAC is not cause for concern IMO. They could have up-rated that spec at the lower voltage. These are very similar switches. The NKK is specifically advertised as "High-Inrush".
Phloodpants
Member
And ugh, I just noticed the NKK has 3/16" fast-connnect terminals and not 1/4", so you'd have to install new terminals. Maybe you can find another switch with the right terminals.
blondiebass
Member
Hey thanks for the good info! I'll get into it tonight and hopfully find the correct switch. And bonus if it's rated a bit higher..