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Why are relays with higher voltage & current capacities more expensive?

I can't figure out why a relay rated for 30 amps & 240 AC volts is like $50 when it has the same basic components as $5 12 volt relay. Maybe the coils cost more as their voltage ratings go up, but the actual switch mechanism & contacts should be the same.

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  • MarkG
    Lv 7
    8 years ago
    Favorite Answer

    Besides an increase in the quantity of raw materials necessary to produce the item, larger units can also use precious materials like silver contacts to lower operating resistance of the conacts. Also there are more r&d and certification costs associated with its development and a limited market for higher amperage units reduces production volume. The design of a larger unit may also incorporate replaceable parts such as contacts which complicates the design but due to the base cost enable repair as an economical alternative to full replacement. Tieing in with lower demand and volume is inventory cost. A supplier has to tie up more money in an inventory that doesn't move off the shelf quickly. A certain amount of interest is incorporated in to the retail price to recover some of the long term inventory costs. And finally there are larger shipping and handeling costs that also need to be recovered in the sale price. Larger relays weigh more and thus cost more to ship and require more area to store in inventory.

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  • Anonymous
    8 years ago

    Same reason a fat chick pays more for her clothes than a slim chick. More material. There. Common sense.

    Source(s): I got in the pit and tried to love someone but was arrested for sexual assault, instead.
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