CT-ERS.21S
Market snapshot
Prices updated 9 Oct 2026 · next refresh 9 NovMedian $120 · 6 sellers · $44.18 below median at the lowest
Asking prices for the exact catalog number CT-ERS.21S currently range from $76.01 to $185 across 6 sellers, observed 9 Oct 2026. Distributor product page: santaclarasystems.com. Prices are published seller asking prices; shipping, taxes and negotiated trade pricing are not included.
Current listings
6 SELLERS · SORTED BY PRICE| Seller | Price | vs median | Listing |
|---|---|---|---|
| Radwell.com | $76.01 | -37% | View offer |
| AeliyaMarineTech.com | $100.69 | -16% | View offer |
| Wistex | $113.68 | -5% | View offer |
| volt-werk.com | $126.70 | +5% | View offer |
| WiAutomation US | $162.65 | +35% | View offer |
| Mouser | $185.10 | +54% | 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 | 3 | $112 | -7% |
| CT-ERS.12S | one character apart | 2 | $131 | +9% |
Frequently asked
How much does a CT-ERS.21S cost?
As of 9 Oct 2026, the ABB CT-ERS.21S is listed from $76.01 to $185 across 6 sellers. The median asking price is $120. Prices are published seller asking prices and are refreshed monthly.
Who sells the CT-ERS.21S?
6 sellers currently list the CT-ERS.21S, including Radwell.com, AeliyaMarineTech.com, Wistex. 6 of them are specialist industrial distributors. The lowest current asking price is $76.01 from Radwell.com.
Why do CT-ERS.21S prices vary so much?
The highest asking price for the CT-ERS.21S is 2.4× 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.
