6SE6440-2UD21-5AA1
Market snapshot
Prices updated 20 Sep 2026 · next refresh 21 OctMedian $354 · 20 sellers · $255 below median at the lowest
Asking prices for the exact catalog number 6SE6440-2UD21-5AA1 currently range from $99.00 to $600 across 20 sellers, observed 20 Sep 2026. Distributor product page: nexinstrument.com. Prices are published seller asking prices; shipping, taxes and negotiated trade pricing are not included.
Current listings
20 SELLERS · SORTED BY PRICE| Seller | Condition | Price | vs median | Listing |
|---|---|---|---|---|
| eBay - a-z_automatyka | not stated | $99.00 | -72% | View offer |
| eBay - mark-plc | not stated | $179.40 | -49% | View offer |
| vb-steuerungstechnik.de | not stated | $185.73 | -48% | View offer |
| inprosols | not stated | $199.00 | -44% | View offer |
| eBay - plasma-weld-lt | NEW | $208.43 | -41% | View offer |
| eBay - a29-136 | not stated | $211.15 | -40% | View offer |
| Botworks | not stated | $229.91 | -35% | View offer |
| eBay - szyhmy | not stated | $300.76 | -15% | View offer |
| eBay - pioneerplc | not stated | $314.13 | -11% | View offer |
| eBay - superautotech | NEW | $339.34 | -4% | View offer |
| PLC Direct | not stated | $369.39 | +4% | View listing |
| Standard Exchange Industry | not stated | $372.24 | +5% | View offer |
| eBay - xinbuy | not stated | $390.00 | +10% | View offer |
| eBay - z2penglixiang | not stated | $392.65 | +11% | View offer |
| ddpartssolution.com | not stated | $441.00 | +24% | View offer |
| PLCpartssolution | not stated | $450.00 | +27% | View offer |
| eBay - usnewpartin | not stated | $453.43 | +28% | View offer |
| AliExpress - AliExpress-2668850588 | NEW | $496.36 | +40% | View offer |
| eBay - lelen-co | not stated | $500.00 | +41% | View offer |
| cnctoolsllc.com | NEW | $600.00 | +69% | View offer |
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Condition
AS STATED BY SELLERS| New | 4 |
| Not stated | 16 |
Variants and similar numbers
VERIFY BEFORE ORDERING| Catalog number | Relationship | Sellers | Median | vs this part |
|---|---|---|---|---|
| 6SE6440-2UD17-5AA1 | one character apart | 14 | $352 | -1% |
| 6SE6440-2UD25-5CA1 | one character apart | 11 | $1,178 | +232% |
| 6SE6440-2UD21-1AA1 | one character apart | 5 | $647 | +83% |
| 6SE6440-2UD31-5DA1 | one character apart | 4 | $2,059 | +481% |
| 6SE6440-2UD15-5AA1 | one character apart | 4 | $695 | +96% |
| 6SE6440-2UD27-5CA1 | one character apart | 3 | $850 | +140% |
| 6SE6440-2UE21-5CA1 | one character apart | 2 | $1,368 | +286% |
Frequently asked
How much does a 6SE6440-2UD21-5AA1 cost?
As of 20 Sep 2026, the Siemens 6SE6440-2UD21-5AA1 is listed from $99.00 to $600 across 20 sellers. The median asking price is $354. Prices are published seller asking prices and are refreshed monthly.
Who sells the 6SE6440-2UD21-5AA1?
20 sellers currently list the 6SE6440-2UD21-5AA1, including eBay - a-z_automatyka, eBay - mark-plc, vb-steuerungstechnik.de. 8 of them are specialist industrial distributors. The lowest current asking price is $99.00 from eBay - a-z_automatyka.
Why do 6SE6440-2UD21-5AA1 prices vary so much?
The highest asking price for the 6SE6440-2UD21-5AA1 is 6.1× 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.
