6SE6440-2UD21-1AA1
Market snapshot
Prices updated 20 Sep 2026 · next refresh 21 OctMedian $647 · 5 sellers · $183 below median at the lowest
Asking prices for the exact catalog number 6SE6440-2UD21-1AA1 currently range from $464 to $1,108 across 5 sellers, observed 20 Sep 2026. Distributor product page: mroelectric.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 |
|---|---|---|---|
| CirEle | $464.14 | -28% | View offer |
| PLC Direct | $480.13 | -26% | View listing |
| shop.rgbelektronika.eu | $647.39 | · | View offer |
| WiAutomation US | $1,081.87 | +67% | View offer |
| Zancot Electronics | $1,108.00 | +71% | View offer |
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We forward your request to sellers who currently list the 6SE6440-2UD21-1AA1 at or below the market median. They quote you directly — we never see your pricing and take no commission.
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Variants and similar numbers
VERIFY BEFORE ORDERING| Catalog number | Relationship | Sellers | Median | vs this part |
|---|---|---|---|---|
| 6SE6440-2UD21-5AA1 | one character apart | 20 | $354 | -45% |
| 6SE6440-2UD31-1CA1 | one character apart | 6 | $576 | -11% |
| 6SE6440-2UD41-1FA1 | one character apart | 4 | $8,742 | +1250% |
| 6SE6440-2UC21-1BA1 | one character apart | 2 | $809 | +25% |
Frequently asked
How much does a 6SE6440-2UD21-1AA1 cost?
As of 20 Sep 2026, the Siemens 6SE6440-2UD21-1AA1 is listed from $464 to $1,108 across 5 sellers. The median asking price is $647. Prices are published seller asking prices and are refreshed monthly.
Who sells the 6SE6440-2UD21-1AA1?
5 sellers currently list the 6SE6440-2UD21-1AA1, including CirEle, PLC Direct, shop.rgbelektronika.eu. 5 of them are specialist industrial distributors. The lowest current asking price is $464 from CirEle.
Why do 6SE6440-2UD21-1AA1 prices vary so much?
The highest asking price for the 6SE6440-2UD21-1AA1 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.
