Siemens / PLCs and I/O (SIMATIC)
6ES7921-3AA00-0AA0
First listing start: 22 May 2018Last listing start: 17 Sep 2026
Recorded price history
USDSold recordedNo sale recordedMonthly median
Linear price scale. Dates are listing starts.
Median recorded price, all years$26.69
48 plotted records from 48 US-dollar records in this range. Monthly medians use all records in each calendar month.
Archived listings
62 recorded listings| Listing start | Archived listing | Condition | Recorded price | Qty sold | Archive status | Country |
|---|---|---|---|---|---|---|
| 17 Sep 2026 | Siemens 6ES7 921-3AA00-0AA0 PLC / HMI Module NeweBay 298682531312 | New | $99.99 | 0 | Recorded active | AE |
| 29 Jun 2026 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW #344444eBay 188574461166 | New | $86.25 | 0 | Recorded active | US |
| 29 Jun 2026 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW #250326eBay 178265322358 | New | $93.75 | 0 | Recorded active | US |
| 23 Jun 2026 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW* #251038eBay 198447547624 | New - Open box | $23.38 | 0 | Recorded active | US |
| 30 May 2026 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW #250326eBay 178176947493 | New | $93.75 | 0 | Recorded active | US |
| 30 May 2026 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW #344444eBay 178176947278 | New | $86.25 | 0 | Recorded active | US |
| 24 May 2026 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW* #251038eBay 198376771521 | New - Open box | $23.38 | 0 | Recorded active | US |
| 07 Mar 2026 | Siemens Simatic 6ES7 921-3AA00-0AA0 E:01 Front Plug Module -Unused/Original Packaging-eBay 406744638384 | Neu: Sonstige (siehe Artikelbeschreibung) | 37.18 [DE] | 0 | Recorded active | DE |
| 19 Feb 2026 | Siemens 6ES7 921-3AA00-0AA0eBay 117045878163 | Used | $14.12 | 0 | Recorded active | DE |
| 01 Feb 2026 | Siemens Simatic 6ES7 921-3AA00-0AA0 E:01 Front Plug Module -Unused- eBay 406659454844 | Neu: Sonstige (siehe Artikelbeschreibung) | 34.37 [DE] | 0 | Recorded active | DE |
| 31 Dec 2025 | Siemens Simatic 6ES7 921-3AA00-0AA0 E:01 Front Plug Module -Unused/Original Packaging-eBay 406540804706 | Neu: Sonstige (siehe Artikelbeschreibung) | 37.59 [DE] | 0 | Recorded active | DE |
| 08 Oct 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW #344444eBay 197757078173 | New | $86.25 | 0 | Recorded active | US |
| 08 Oct 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW #250326eBay 187633536014 | New | $93.75 | 0 | Recorded active | US |
| 29 Sep 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW #250326eBay 197735161523 | New | $26.69 | 0 | Recorded active | US |
| 29 Sep 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR MODULE, NEW* #251038eBay 187607993849 | New - Open box | $23.38 | 0 | Recorded active | US |
| 29 Sep 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW #250326eBay 197735116620 | New | $26.69 | 0 | Recorded active | US |
| 12 May 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW #250326eBay 187217124436 | New | $26.69 | 0 | Recorded active | US |
| 12 May 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW* #251038eBay 187217123988 | New - Open box | $23.38 | 0 | Recorded active | US |
| 09 May 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW #250326eBay 197299979982 | New | $26.69 | 1 | Sold recorded | US |
| 09 May 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW* #251038eBay 177079169630 | New - Open box | $23.38 | 1 | Sold recorded | US |
| 01 May 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW #250326eBay 197272572545 | New | $26.69 | 0 | Recorded active | US |
| 01 May 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW* #251038eBay 187186573630 | New - Open box | $23.38 | 0 | Recorded active | US |
| 27 Apr 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW* #251038eBay 177047957952 | New - Open box | $23.38 | 0 | Recorded active | US |
| 27 Apr 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW #250326eBay 177047957868 | New | $26.69 | 0 | Recorded active | US |
| 23 Apr 2025 | SIEMENS 6ES7 921-3AA00-0AA0, FRONT CONNECTOR, NEW* #251038eBay 177037865965 | New - Open box | $23.38 | 0 | Recorded active | US |
How to read these records
Dollar amounts are recorded US-dollar prices. Bracketed labels identify other marketplaces, whose currency was not recorded. Recorded quantities sold indicate marketplace activity. Recorded active is the status retained in the archive.