PartHistory
Siemens / PLCs and I/O (SIMATIC)

6ES5521-8MA21

PLCs and I/O (SIMATIC) family illustration
Recorded listings
80
Recorded quantity sold
1
Median recorded price
$296.6356 US-dollar records
Recorded price range
$10.97to $2857.00 USD
First listing start: 16 Mar 2017Last listing start: 28 Aug 2026

Recorded price history

USD
Recorded US-dollar price historyLogarithmic price scale (price + 1). Horizontal axis: listing start date. Vertical axis: recorded price in US dollars. Filled dots have recorded sales; open dots have no recorded sales. The oxide step line shows calendar-month medians, with gaps for missing months.01101001000Mar 2017Jun 2019Oct 2021Feb 2024Jun 20262017-03-16: US$389.21; no sale recorded2017-04-19: US$644.43; no sale recorded2017-06-21: US$644.69; no sale recorded2017-06-28: US$350.00; no sale recorded2017-07-26: US$644.69; no sale recorded2018-01-26: US$644.94; no sale recorded2018-05-16: US$47.00; no sale recorded2018-05-17: US$2857.00; no sale recorded2018-06-16: US$47.00; no sale recorded2018-06-16: US$2857.00; no sale recorded2018-08-15: US$47.00; no sale recorded2018-08-16: US$2857.00; no sale recorded2019-11-07: US$88.19; no sale recorded2019-12-01: US$59.99; no sale recorded2020-02-27: US$91.03; no sale recorded2020-10-08: US$62.62; no sale recorded2020-10-08: US$65.81; no sale recorded2021-01-02: US$67.49; no sale recorded2021-04-02: US$69.76; no sale recorded2022-01-14: US$92.74; no sale recorded2022-01-27: US$574.24; no sale recorded2022-02-15: US$90.31; no sale recorded2022-07-30: US$310.00; no sale recorded2022-07-30: US$712.00; no sale recorded2022-10-13: US$329.39; no sale recorded2022-10-14: US$337.83; no sale recorded2022-10-17: US$337.83; no sale recorded2022-11-22: US$337.83; no sale recorded2022-11-23: US$337.83; no sale recorded2022-12-09: US$337.83; no sale recorded2022-12-12: US$337.83; no sale recorded2023-01-07: US$337.83; no sale recorded2023-01-07: US$337.83; no sale recorded2023-01-15: US$289.57; no sale recorded2023-04-21: US$289.57; no sale recorded2023-05-23: US$296.63; no sale recorded2023-05-25: US$296.63; no sale recorded2023-05-29: US$296.63; no sale recorded2023-06-02: US$296.63; no sale recorded2023-06-14: US$296.63; no sale recorded2023-06-30: US$296.63; no sale recorded2023-07-17: US$307.90; no sale recorded2023-07-18: US$307.90; no sale recorded2023-08-29: US$307.90; no sale recorded2023-09-26: US$24.00; no sale recorded2023-10-13: US$84.85; no sale recorded2024-01-02: US$22.42; no sale recorded2024-03-02: US$22.41; no sale recorded2024-07-01: US$22.28; no sale recorded2024-08-02: US$22.73; no sale recorded2024-09-02: US$10.97; no sale recorded2024-09-02: US$22.37; no sale recorded2025-07-23: US$47.00; no sale recorded2025-07-23: US$2857.00; no sale recorded2025-08-11: US$144.00; no sale recorded2026-06-26: US$144.00; no sale recordedRecorded US-dollar price historyLogarithmic price scale (price + 1). Horizontal axis: listing start date. Vertical axis: recorded price in US dollars. Filled dots have recorded sales; open dots have no recorded sales. The oxide step line shows calendar-month medians, with gaps for missing months.01101001000Mar 2017Oct 2021Jun 20262017-03-16: US$389.21; no sale recorded2017-04-19: US$644.43; no sale recorded2017-06-21: US$644.69; no sale recorded2017-06-28: US$350.00; no sale recorded2017-07-26: US$644.69; no sale recorded2018-01-26: US$644.94; no sale recorded2018-05-16: US$47.00; no sale recorded2018-05-17: US$2857.00; no sale recorded2018-06-16: US$47.00; no sale recorded2018-06-16: US$2857.00; no sale recorded2018-08-15: US$47.00; no sale recorded2018-08-16: US$2857.00; no sale recorded2019-11-07: US$88.19; no sale recorded2019-12-01: US$59.99; no sale recorded2020-02-27: US$91.03; no sale recorded2020-10-08: US$62.62; no sale recorded2020-10-08: US$65.81; no sale recorded2021-01-02: US$67.49; no sale recorded2021-04-02: US$69.76; no sale recorded2022-01-14: US$92.74; no sale recorded2022-01-27: US$574.24; no sale recorded2022-02-15: US$90.31; no sale recorded2022-07-30: US$310.00; no sale recorded2022-07-30: US$712.00; no sale recorded2022-10-13: US$329.39; no sale recorded2022-10-14: US$337.83; no sale recorded2022-10-17: US$337.83; no sale recorded2022-11-22: US$337.83; no sale recorded2022-11-23: US$337.83; no sale recorded2022-12-09: US$337.83; no sale recorded2022-12-12: US$337.83; no sale recorded2023-01-07: US$337.83; no sale recorded2023-01-07: US$337.83; no sale recorded2023-01-15: US$289.57; no sale recorded2023-04-21: US$289.57; no sale recorded2023-05-23: US$296.63; no sale recorded2023-05-25: US$296.63; no sale recorded2023-05-29: US$296.63; no sale recorded2023-06-02: US$296.63; no sale recorded2023-06-14: US$296.63; no sale recorded2023-06-30: US$296.63; no sale recorded2023-07-17: US$307.90; no sale recorded2023-07-18: US$307.90; no sale recorded2023-08-29: US$307.90; no sale recorded2023-09-26: US$24.00; no sale recorded2023-10-13: US$84.85; no sale recorded2024-01-02: US$22.42; no sale recorded2024-03-02: US$22.41; no sale recorded2024-07-01: US$22.28; no sale recorded2024-08-02: US$22.73; no sale recorded2024-09-02: US$10.97; no sale recorded2024-09-02: US$22.37; no sale recorded2025-07-23: US$47.00; no sale recorded2025-07-23: US$2857.00; no sale recorded2025-08-11: US$144.00; no sale recorded2026-06-26: US$144.00; no sale recorded
Sold recordedNo sale recordedMonthly median

Logarithmic price scale (price + 1). Dates are listing starts.

Median recorded price, all years$296.63

56 plotted records from 56 US-dollar records in this range. Monthly medians use all records in each calendar month.

Archived listings

80 recorded listings
Listing startArchived listingConditionRecorded priceQty soldArchive statusCountry
28 Aug 2026SIEMENS SIMATIC S5 6ES5521-8MA21eBay 147533072116Gebraucht11.65 [DE]0Recorded activeHU
26 Jun 2026SIEMENS 6ES5 521-8MA21 SERIAL INTERFACE / SIEMENS 6ES5521-8MA21eBay 206374840590New - Open box$144.000Recorded activeJO
22 Jun 2026Siemens CP521 SI 6ES5521-8MA21 Serial Interface 6ES5 521-8MA21eBay 127936424443Gebraucht11.36 [DE]0Recorded activeDE
20 Jun 2026Siemens 6ES5521-8MA21 6ES5 521-8MA21 eBay 407015391456Gebraucht11.36 [DE]0Recorded activeDE
20 Jun 2026Siemens 6ES5521-8MA21 Sinaut TIM011B 6NH1804-2BB01-3CB2eBay 147387861562Gebraucht57.24 [DE]0Recorded activeDE
19 May 2026Siemens 6ES5521-8MA21 Sinaut TIM011B 6NH1804-2BB01-3CB2eBay 406936216508Gebraucht58.16 [DE]0Recorded activeDE
06 May 20263x Siemens 6ES5521-8MA21 SIMATIC S5 CP521 SI Interface Module 6ES55218MA21eBay 127849055558Gebraucht17.54 [DE]0Recorded activeDE
28 Feb 2026Siemens 6ES5521-8MA21 Sinaut TIM011B 6NH1804-2BB01-3CB2eBay 406728158810Gebraucht58.94 [DE]0Recorded activeDE
28 Feb 2026Siemens 6ES5521-8MA21 6ES5 521-8MA21 eBay 406728158778Gebraucht11.69 [DE]0Recorded activeDE
28 Jan 2026Siemens 6ES5521-8MA21 Sinaut TIM011B 6NH1804-2BB01-3CB2eBay 127650086412Gebraucht60.08 [DE]0Recorded activeDE
28 Jan 2026Siemens 6ES5521-8MA21 6ES5 521-8MA21 eBay 147121860244Gebraucht11.92 [DE]0Recorded activeDE
11 Aug 2025SIEMENS 6ES5 521-8MA21 SERIAL INTERFACE / SIEMENS 6ES5521-8MA21eBay 205665771090New - Open box$144.000Recorded activeJO
01 Aug 2025SIEMENS 6ES5521-8MA21 / 6ES55218MA21 (NEW IN BOX)eBay 388784181812Neu: Sonstige (siehe Artikelbeschreibung)336.33 [DE]0Recorded activeDE
23 Jul 2025SIEMENS SIMATIC S5 6ES5521-8MA21 SERIAL INTERFACE MODULE NSMPeBay 157193004009New - Open box$2857.000Recorded activeUS
23 Jul 2025SIEMENS SIMATIC S5 6ES5521-8MA21 COMMUNICATION PROCESSER UNMPeBay 177286716846Used$47.000Recorded activeUS
08 Nov 2024SIEMENS 6ES5521-8MA21 SIMATIC S5eBay 156502834680Gebraucht7.89 [Germany]0Recorded activeDE
17 Oct 2024Siemens 6ES5521-8MA21 6ES5 521-8MA21 eBay 126728917805Gebraucht10.41 [Germany]0Recorded activeDE
17 Oct 2024Siemens 6ES5521-8MA21 Sinaut TIM011B 6NH1804-2BB01-3CB2eBay 126728917969Gebraucht52.48 [Germany]0Recorded activeDE
02 Sep 2024Siemens Simatic 6ES5521-8MA21 Serial InterfaceeBay 145997159117Used$22.370No sale recordedDE
02 Sep 2024Used Siemens 6ES5521-8MA21 [24 Months Warranty]eBay 186665619507Used$10.970No sale recordedCZ
02 Aug 2024SIEMENS Simatic 6ES5521-8MA21 Serial Interface 6ES55218MA21eBay 145925263180Used$22.730No sale recordedDE
01 Jul 2024SIEMENS Simatic 6ES5521-8MA21 Serial Interface 6ES55218MA21eBay 145865008845Used$22.280No sale recordedDE
23 Apr 2024USED SIEMENS 6ES5521-8MA21 [24 MONTHS WARRANTY]eBay 176346659451Gebraucht10.42 [Germany]1Sold recordedCZ
02 Mar 2024SIEMENS Simatic 6ES5521-8MA21 Serial Interface 6ES55218MA21eBay 145642754323Used$22.410No sale recordedDE
07 Feb 2024USED SIEMENS 6ES5521-8MA21 [24 MONTHS WARRANTY]eBay 176227763421Gebraucht10.53 [Germany]0No sale recordedCZ
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.

Browse neighboring part numbers by prefix

Neighboring part numbers

6ES5516-3UA116ES5521-8MA116ES5521-8MA11-Z6ES5521-8MA226ES5521-8MA22/6ES56ES5521-8MB11

Related part numbers

6ES5441-8MA116ES5095-8MA016ES5700-8MA116ES5924-3SA116ES5923-3UA116ES5095-8MA036ES5752-0AA226ES5922-3UA116ES5431-4UA126ES5760-1AA116ES5752-0AA126ES5458-7LA116ES5430-4UA136ES5458-7LA126SE7021-8TB51-Z

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