Switching A Large DC Motor.

Discussion in 'General Electronics Chat' started by NM2008, Mar 6, 2012.

  1. NM2008

    Thread Starter Senior Member

    Feb 9, 2008
    135
    0
    Hi,

    Just wondering is there a relatively easy yet reliable way to switch a large 24v DC motor on/off. It has a rated current of 35A.

    Without getting into speed controllers and ramp circuits, would it be advisable to directly switch it on/off with a relay capable of handling this, plus excess starting current? Would there be major issues with arcing on the contacts of any relay switching such a load?

    It will not be switching more than 5 times per minute.

    Power supply is not an issue as it will possibly be driven from batteries.

    Thanks,
    Regards NM
     
  2. jimkeith

    Active Member

    Oct 26, 2011
    539
    99
    PM type motor?
    Shunt field type?
    Series field type?
     
  3. gerty

    AAC Fanatic!

    Aug 30, 2007
    1,153
    304
    How long does it need to run? Could be something as common as a starter solenoid.
     
  4. NM2008

    Thread Starter Senior Member

    Feb 9, 2008
    135
    0
    Hi,
    jimkeith I dont have that information.

    gerty Absolute max run time would be 30 seconds.

    Regards NM
     
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