S102/1G

      The S102/1G is designed as thermal delay switches which provide delay between the application of heater voltage and anode voltage in indirectly heated values and mercury vapour rectifiers.
      Something about the heater of the S102/1G.The first one is about its heater voltage which would e 6.3V.The second one is about its nominal current which would be 0.5A. Also something about its delay time at 20°C.The first one is about its minimum delay which would be 44 sec.The second one is about its maximum delay which would be 66 sec. Also some thing about its dimensions.The first one is about its maximum overall length which would be 54.0mm.The second one is about its maximum seated height which would be 47.6mm.The third one is about its maximum overall diameter which would be 19.1mm.The next one is about its minimum lead length which would be 38mm.The next is about its base which would be B7G/F.The next one is about its net weight which would be 9g.The next one is about its mounting position which would be vertical, base down.
      Some absolute maximum ratings of the S102/1G have been concluded into several points as follow.The first one is about its maximum open circuit D.C. voltage between contacts which would be 220V.The second one is maximum contact current on make which would be 1.0A.The next one is about its maximum surge current on make which would be 5.0A.The next one is about its maximum current on break at 50V D.C. which would be 100mA.Something should be noted that a recommended method of operation is to arrange for the delay switch to operate a mechanical relay fitted with a "hold-on" coil.By this means large powers can be handled and it can be so arranged that as the contacts close the heater supply of the switch is removed.This will ensure the full delay time in the event of a shut down.