DC Contactor / FGC Relay 10A inductive

How about an automotive (as in truck) or heavy equipment (as in bulldozer) contactor? The ones used for starters have to switch high DC inductive loads. A separate NC relay can be used for sensing.

Damn good idea re. the load switching - a good cheap & reliable solution.

Trouble is, in a safety system, the NC (monitoring) contacts have to be mechanically linked to the NO (control) contacts, as in a contactor or FGC relay. This is to make sure that if the control contacts weld, the monitoring contacts stay open when the coil is de-energized. The monitoring system detects this state, & locks out to safety.

Thanks anyway, Bill - keep the suggestions coming!

O. K. How about this R51 job from NTE . . . Has rating of 50 A @ 14 V, so it should be able to handle 10 A @ 24 V. There's also a R54 rated at 30 A @ 28 VDC. See this page.

Thanks again, Bill, but I still need the mechanically-linked auxiliary contacts for monitoring (R51 job from NTE is a single-pole thing, SPST or SPDT).

One of the R51 series has SPDT contacts.

You may want to talk to www.gigavac.com who have a GX11 contactor for about $125 that migh do the job. It's a SPST main contacts with SPDT auxillary contacts.

Thanks, Guest, I'll give the UK distributors a call in the morning. Could be onto something.

hi John,

Have you tried Albrights?

we use them for 24Vdc motor control on anything > 10A

Tel: +44 (0) 208 390 5357
Fax: +44 (0) 208 390 1927
Sales Email:sales@albright.co.uk
Technical Email: technical@albright.co.uk
Mail: 125 Red Lion Road, Tolworth, Surbiton, Surrey, KT6 7QS, England

or, as previously suggested go automotive;- try http://www.boschmotorsandcontrols.co.uk/relais/relais.pdf.

you might find what you are looking for there.

good luck

chas