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Old 30th July 2002, 07:50 PM   #1
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Default HVDC DPDT Switch

Can anyone help me find a source for a DPDT switch that will handle 300VDC@30mA per contact? I've looked in most catalogs and have found nothing. Help!
Tks,
Jack Thomas
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Old 30th July 2002, 08:03 PM   #2
jwb is offline jwb  United States
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Why not use a relay? I've seen plenty of 300VDC power relays.
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Old 30th July 2002, 08:51 PM   #3
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Default HVDC switch

Tks for the hint, but I've seen no 300VDC relays listed on by any of the major small parts suppliers, such as Mouser, Digikey, Allied, etc., or on the net. If anyone knows of a source, pse let me know.
Tks,
Jack T.
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Old 30th July 2002, 09:03 PM   #4
jwb is offline jwb  United States
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The Omron G2RL series can switch 300mA at 300VDC.

http://www.digikey.com/scripts/us/dk...215&Row=272185
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Old 31st July 2002, 01:16 AM   #5
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Jack,

You have to go to an industrial type switch. AC not too bad but breaking a high DC voltage can be hard on the contacts, even at low currents.

Allied carries IDEC "Oiltight" switches that are rated up to 600VDC. You could also try Allen-Bradley, or Cutler-Hammer, or any of the industrial controls manufacturers.

You might think about an interposing relay like jwb suggested.

Have Fun,
Rodd Yamashita
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