[GreenKeys] Dead 215 or 255 relays

Paul Wills pdwills at cedarknolltelephone.com
Fri Dec 26 10:54:28 EST 2025


Hello all,

I am involved in a project to restore the Pennsylvania Railroad Power 
Director's office in Harrisburg, PA to simulated operation.

https://www.harrisburgnrhs.org/pdo

The supervisory control units use modified 215 relays for the line 
circuits.  As some of the relays were fried, we replaced the "guts" with 
solid state relays and found them to be very reliable.  As the SCADA 
units are temperamental enough by themselves, we found that the solid 
state relays provide one less "unknown" when restoring them to life.

Since we don't want to destroy the remaining 215 relays, we are looking 
for damaged or burnt out 215 or 255 relays which we use to house the 
solid state components.  Does anyone have any that they are willing to 
contribute to the project?

Thanks,

Paul Wills



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