Various companies make contactors intended for DC drives. They have a conventional three-pole frame, but the center pole has NC contacts (the two outer poles have conventional NO contacts). The center pole is intended to apply a DB resistor across the motor armature after the outer poles disconnect the motor from the drive output.
By design, it is impossible for the NO and NC contacts to be closed at the same time. Asea makes a whole family of them, called the EFLG series. They have permanant magnet arc blow-outs on the NC pole (hence the polarity markings on the contactor below) http://www.ebay.com/itm/230905835584 That one is from the US ebay and has a 120V coil, you might have better luck finding a 230V coil on ebay.uk. http://www.ebay.com/itm/390624331282 is another one, the coil voltage isn't specified in the auction but the full part number is, you could google for details. On Wed, Oct 2, 2013, at 08:21 AM, andy pugh wrote: > On 2 October 2013 11:09, john d norton <j...@jnfabs.co.uk> wrote: > > Maybe look into using a starter solinoid maybe 12 or 24 v I know > > It really needs to have interlocked NO / NC contacts and be controlled by > 240V. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- John Kasunich jmkasun...@fastmail.fm ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
