ELECTROVAC Quecksilberschalter Typ 9.002/1 2A 250V
Mercury Relay Tube
Relais à mercure

Electrovac, Hacht & Co., K.-G., Vienna, Austria, founded in 1947.

The left flask contains a resistance heater which heats the air in the tube and pushes the mercury down; this will close the circuit.

 

85 x 42 mm • 3" 3/8 x 1" 5/8

 

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