The DP's are so much cheaper, that the payoff with the latching contactors could not be realized for a long time. Typical 8 pole latching $600-$800 and up. You can buy a lot of DP's for that. Most of the latching contactors are used on engineered jobs, such as the big box stores, (except for the Blue box, they use DP's in a manufactured gear.) It is also cheaper to buy an cube relay to control it vs. a double throw time clock.Thanks for the explanation, I'll have to look into double throw timeclocks, didn't know they made 'em.:smile:
Is the extra expense worth the extra longevity? I'm just wondering if it would benefit my customers to start installing this type? Like I said, electrically held DP contactors is all I've ever seen around here, but if there's a better/more reliable way available for a reasonable expense, I'm all for it.