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ID = 30976
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Relay in glass (not Relay Triode) 
Identical to VLS631 = S102/1K = CV342 = Z530333
Similar Tubes
Different maximum ratings:

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 6.3 Volts / If 0.5 Ampere
Description Temperature-Compensated Delay Switch
44-66 second delay at 6.3V and 20C ambient.
At 5V the closing time is extended to between 100 and 130 seconds
Contacts rated at 220V dc 100V ac; current <1A.
1 & 7 heater, 3 & 4 contact. 
Dimensions (WHD)
incl. pins / tip
19 x 54 x mm / 0.75 x 2.13 x inch
Tube prices 1 Tube prices (visible for members only)
Information source - - Manufacturers Literature   
VLS631: scc
Christian Schaufelberger

More ...
VLS631: Manufacturer's Literature
Emilio Ciardiello


from Just Qvigstad

Usage in Models 1= 1951

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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