CT-ERS.21S
Market snapshot
Prices updated 20 Sep 2026 · next refresh 21 OctMedian $130 · 5 sellers · $61.45 below median at the lowest
Asking prices for the exact catalog number CT-ERS.21S currently range from $68.94 to $185 across 5 sellers, observed 20 Sep 2026. Distributor product page: santaclarasystems.com. Prices are published seller asking prices; shipping, taxes and negotiated trade pricing are not included.
Current listings
5 SELLERS · SORTED BY PRICE| Seller | Price | vs median | Listing |
|---|---|---|---|
| Radwell.com | $68.94 | -47% | View offer |
| eBay | $84.75 | -35% | View offer |
| yachtneeds.com | $130.39 | · | View offer |
| NY Parts | $144.74 | +11% | View offer |
| Mouser | $185.10 | +42% | View offer |
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Variants and similar numbers
VERIFY BEFORE ORDERING| Catalog number | Relationship | Sellers | Median | vs this part |
|---|---|---|---|---|
| CT-ERS.22S | one character apart | 2 | $111 | -15% |
Frequently asked
How much does a CT-ERS.21S cost?
As of 20 Sep 2026, the ABB CT-ERS.21S is listed from $68.94 to $185 across 5 sellers. The median asking price is $130. Prices are published seller asking prices and are refreshed monthly.
Who sells the CT-ERS.21S?
5 sellers currently list the CT-ERS.21S, including Radwell.com, eBay, yachtneeds.com. 4 of them are specialist industrial distributors. The lowest current asking price is $68.94 from Radwell.com.
Why do CT-ERS.21S prices vary so much?
The highest asking price for the CT-ERS.21S is 2.7× the lowest. Industrial parts trade in a market where new surplus, refurbished stock and list-price sellers coexist without a shared price reference, so identical catalog numbers are listed at very different prices.
