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S1-1A

Information - Help 
ID = 31020
       
 
   
Tube type:  Relay in glass (not Relay Triode) 
Identical to S1-1A

Filament
Description Thermal relay by Edison USA. NO contacts close at 70 C. 
Literature -- Collector info (Sammler)   
 
s1_1a_edison.jpg
S1-1A: Private collection
Emilio Ciardiello

 


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