6SE7021-3TB51
Median $4,469 · 4 sellers · $3,338 price spread
Asking prices for the exact catalog number 6SE7021-3TB51 currently range from $2,970 to $6,308 across 4 sellers, observed 9 Aug 2026. Distributor product page: nexinstrument.com. Prices are published seller asking prices; shipping, taxes and negotiated trade pricing are not included.
| Seller | Condition | Price | vs median | Listing |
|---|---|---|---|---|
| Automation Warehouse | NEW | $2,969.72 | -34% | View listing |
| MRO Electric | not stated | $4,469.00 | · | View listing |
| Radwell.com | not stated | $4,469.18 | · | View listing |
| PLC Direct | not stated | $6,307.69 | +41% | View listing |
| New | 1 |
| Not stated | 3 |
How much does a 6SE7021-3TB51 cost?
As of 9 Aug 2026, the Siemens 6SE7021-3TB51 is listed from $2,970 to $6,308 across 4 sellers. The median asking price is $4,469. Prices are published seller asking prices and are refreshed monthly.
Who sells the 6SE7021-3TB51?
4 sellers currently list the 6SE7021-3TB51, including Automation Warehouse, MRO Electric, Radwell.com. 4 of them are specialist industrial distributors. The lowest current asking price is $2,970 from Automation Warehouse.
Why do 6SE7021-3TB51 prices vary so much?
The highest asking price for the 6SE7021-3TB51 is 2.1× 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.