Try Art Medore at Banaire
http://www.banaire.com/
He shows a breaker, AN3160-5 and a rheo, AN3155-25-250 that is 250 ohm rather than 200 ohm.
The stuff is "close" to what you need.
If that won't work, contact Walt Garbrecht.
I have 2 e-mails for him.
bigwally2@verison.net and
bigwallygee@yahoo.com.
Sorry I don't now which one is current.
He has TONS of electrical stuff listed SOMEWHERE. He will send you a list. Its NOS and cheap. You have to be patient and persistant, but he has alot of stuff and goes by the numbers.
Hope this helps.