Sold-price comps for industrial automation parts DATA AS OF 2026-08-31

1747-L551 Sold Price History

Allen-Bradley · observed sold prices, the 90 days ending August 31, 2026

Sold listings (90d)Median soldSold rangeMedian ask*Sold vs ask
107$800$200–$2,475$1,500-47%

Lifecycle status: Discontinued per Rockwell Automation, checked 2026-08-31.

Median sold price by condition

ConditionSoldMedianRange
New / surplus27$1,290$1,178–$2,475
Open box8$700$550–$1,670
Refurbished3$750$650–$870
Used65$750$499–$1,100
For parts / not working4$222$200–$1,600
Median sold ($800) vs median asking price across covered sellers ($1,500): -47%. Condition mix differs between sold and asking listings; see methodology.
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Individual sold listings (107)

DateListingConditionSold price
2026-08-30New ListingAllen Bradley 1747-L551 C TESTEDPre-Owned$499
2026-08-29Allen Bradley 1747-L551 C TESTEDPre-Owned$499
2026-08-27Allen-Bradley 1747-L551 Series C SLC 5/05 16K PLC CPU Ethernet RS-232Pre-Owned$694
2026-08-26Allen Bradley 1747-L551 SLC 500 SLC 5/05 CPU Processor Controller Ser C Rev 5Pre-Owned$760
2026-08-25Allen Bradley 1747-L551 SLC 500 SLC 5/05 CPU Processor Controller Ser C Rev 5Pre-Owned$700
2026-08-24USED Allen Bradley 1747-L551/A SLC 500 Processor Unit Proc. Rev. 1 Loose CoverPre-Owned$775
2026-08-21Allen-Bradley SLC 500 Processor CPU Series C FRN 10 1747-L551 5/05 CPUPre-Owned$820
2026-08-21NEW Original Sealed AB 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747L551Brand New$1,800
2026-08-20Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!Pre-Owned$750
2026-08-20AB CPU 5/05 SLC 500 1747-L551 SER C REV 5 FRN 10Pre-Owned$862
2026-08-20Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!Pre-Owned$750
2026-08-20Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!Pre-Owned$750
2026-08-20SEALED Allen Bradley 1747-L551 /C SLC500 5/05 Ethernet/RS-232 Processor 1747L551Brand New$2,475
2026-08-20New Sealed AB 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747L551Brand New$1,288
2026-08-19Allen-Bradley SLC 500 SLC 5/05 CPU Processor Unit Module 1747-L551New – Open box$1,030
2026-08-18New Allen-Bradley 1747-L551 SER C SLC500 5/05 CPU Processor Unit Module 1747L551Brand New$1,285
2026-08-17Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!Pre-Owned$700
2026-08-17New Sealed AB 1747-L551 SLC CPU Processor Unit Module Free ShippingBrand New$1,366
2026-08-17Allen Bradley 1747-L551 /C SLC 500 5/05 16K Memory RS-232/Ethernet ControllerPre-Owned$1,028
2026-08-16AB 1747-L551 /C SLC CPU Processor Unit Module Allen Bradley US Free TaxBrand New$1,284
2026-08-15Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!Pre-Owned$600
2026-08-14USED Allen Bradley 1747-L551/A SLC 500 Processor Unit Proc. Rev. 1 OS501Pre-Owned$800
2026-08-13Allen Bradley AB 1747-L551 Ser C Proc Rev 5 SLC 500 5/05 Processor Unit FRN 10Pre-Owned$850
2026-08-12Allen Bradley 1747-L551 Ser B SLC 5/05 CPU Processor Unit Module 1747L551 PLCPre-Owned$895
2026-08-12Allen Bradley 1747-L551 SLC 500 SLC 5/05 CPU Processor Controller Ser C Rev 5Pre-Owned$750
2026-08-11Allen Bradley SLC 5/05 16K Controller 1747-L551Brand New$1,200
2026-08-10Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!Pre-Owned$975
2026-08-10Allen-Bradley 1747-L551 | SLC 5/05 CPU Controller Module (16 KB Memory) SER DPre-Owned$1,000
2026-08-10Allen-Bradley 1747-L551 /C 1747-OS501 C FRN 10 SLC 500 5/05 CPU ProcessorPre-Owned$940
2026-08-06Allen-Bradley SLC 500 Processor Unit 1747-L551 PLC ControllerNew – Open box$600
2026-08-06Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module Missing frontPre-Owned$600
2026-08-05Allen Bradley AB 1747-L551 Ser C SLC 500 5/05 16K Controller FW13Pre-Owned$850
2026-08-05Allen Bradley 1747-L551 /B SLC 500 5/05 Ethernet/RS-232 16K Memory ControllerPre-Owned$881
2026-08-05Allen-Bradley 1747-L551 SLC 500 Controller Processor Unit Rockwell AutomationBrand New$2,375
2026-08-05ALLEN BRADLEY 1747-L551 SLC 500 PROCESSOR UNIT CPU SER B REV 4 **GUARANTEED**Pre-Owned$599
2026-08-041PC New Factory Sealed 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747L551Brand New$1,366
2026-07-31Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLCPre-Owned$700
2026-07-31Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLCPre-Owned$750
2026-07-311PC New Sealed AB 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747 L551Brand New$1,366
2026-07-31New Factory Sealed AB 1747-L551 SER C SLC 500 5/05 CPU Processor Unit 1747L551Brand New$1,366
2026-07-30ALLEN BRADLEY 1747-L551 SLC 500 PROCESSOR UNIT CPU SER. B REV. 4Pre-Owned$800
2026-07-30Allen Bradley 1747-L551 Ser C 1747-OS501 w/Key (TESTED)Pre-Owned$750
2026-07-28ALLEN-BRADLEY / 1747-L551 / SLC 500 / 5/05 16K PLC PROCESSORPre-Owned$600
2026-07-28TESTED Allen Bradley 1747-L551 Series C SLC 500 SLC 5/05 CPUPre-Owned$980
2026-07-27Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLCPre-Owned$895
2026-07-27Allen Bradley 1747-L551 Ser C 1747-OS501 w/Key (TESTED)Pre-Owned$750
2026-07-25ALLEN BRADLEY 1747-L551 SLC 500 PROCESSOR UNIT CPU SER. D FAST SHIPPre-Owned$1,100
2026-07-23Allen Bradley 1747-L551 Ser A SLC 500 No key AS SHOWNPre-Owned$700
2026-07-22Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLCPre-Owned$800
2026-07-22Allen Bradley AB 1747-L551 Ser C FW 13 SLC 500 5/05 Processor + New BatteryRefurbished$750
2026-07-21Allen Bradley 1747-L551 /B SLC 500 5/05 16K Memory RS-232/Ethernet ControllerPre-Owned$1,000
2026-07-20Allen-Bradley 1747-L551 Ser C CPU ProcessorPre-Owned$785
2026-07-20Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLCPre-Owned$790
2026-07-17Allen Bradley 1747-L551 /C CPU MODULE SLC 5/05 16K USER MEMORY SLC500Pre-Owned$750
2026-07-17Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLCPre-Owned$610
2026-07-17New Factory Sealed AB 1747-L551 / C SLC 500 5/05 CPU Processor Unit 1747-L551Brand New$1,294
2026-07-17Allen-Bradley 1747-L551 /A SLC 5/05 Processor UnitPre-Owned$920
2026-07-17Allen Bradley 1747-L551 SLC 500 Processor UnitPre-Owned$799
2026-07-17Allen Bradley 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747 L551# NewBrand New$1,358
2026-07-161PC New Factory Sealed 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747 L551Brand New$1,366
2026-07-14New Sealed AB 1747-L551 SLC 5/05 CPU Processor Unit Module 1747L551 US Free TaxBrand New$1,283
2026-07-12Allen-Bradley 1747-L551 5/05 CPUPre-Owned$525
2026-07-12Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLCPre-Owned$550
2026-07-10Allen Bradley 1747-L551 Ser C 1747-OS501 FW 10 SLC 500 5/05 Comes With E-PROMPre-Owned$950
2026-07-09Allen Bradley 1747-L551 Ser C 1747-OS501 FW 10 SLC 500 5/05Pre-Owned$750
2026-07-09* ALLEN BRADLEY 1747-L551 SER C REV A CPU PROCESSOR UNITPre-Owned$788
2026-07-09New Factory Sealed 1747-L551 SLC 5/05 CPU Processor Unit Module PLCBrand New$1,290
2026-07-08Allen Bradley 1747-L551 /B SLC 500 5/05 16K Memory Ethernet/RS-232 ControllerPre-Owned$750
2026-07-06ALLEN BRADLEY 1747-L551 SER.B PROCESSOR UNIT W/KEY NSNPNew – Open box$1,670
2026-07-06Allen-Bradley SLC 500 PLC Processor Unit Bulletin 1747-L551 Catalog 1747Brand New$2,475
2026-07-03Allen-Bradley SLC 500 Controller with 1747-L551 Processor Unit - 10 Slot RackPre-Owned$500
2026-07-02Allen Bradley 1747-L551 Ser A or 1747-OS501 C FRN 4 SLC 500 No keyPre-Owned$725
2026-07-011747-L551 1PCS Brand New AB 1747-L551 SER C Fast deliveryBrand New$1,253
2026-07-01Allen Bradley SLC 500 Processor Card CAT 1747-L551New – Open box$750
2026-07-01ALLEN BRADLEY 1747-L551 SER C CPU PROCESSOR UNITPre-Owned$720
2026-06-30NEW AB 1747-L551 SER B SLC500 PLC CPU Processor Unit Module 1747L551New – Open box$1,000
2026-06-29NEW Original Sealed AB 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747L551Brand New$1,178
2026-06-28Allen-Bradley 1747-L551 SER B REV 4 SLC500 SLC 5/05 CPU Processor Module.Refurbished$870
2026-06-28ALLEN-BRADLEY 1747-L551 SLC 5/05 Series PLC SERIES CBrand New$1,250
2026-06-27Allen-Bradley SLC 500 SLC 5/05 SLC Processor Module 1747-L551Pre-Owned$725
2026-06-27Allen-Bradley SLC 500 SLC 5/04 PLC Processor Module Controller, 1747-L551Pre-Owned$725
2026-06-26Allen-Bradley SLC500 1747-L551 SER A Proc Rev 1 1747-OS501 SER A FRN 5Parts Only$200
2026-06-26New Sealed AB 1747-L551 SLC 5/05 CPU Processor Unit Module 1747L551 US Free TaxBrand New$1,280
2026-06-26Allen Bradley 1747-L551 /B SLC 500 5/05 16K Memory Ethernet/RS-232 ControllerPre-Owned$797
2026-06-25Allen-Bradley 1747-L551 /C SLC 500 SLC 5/05 E-Net/RS-232 16K Memory ControllerPre-Owned$872
2026-06-25Allen-Bradley 1747-L551 /CPre-Owned$899
2026-06-24Allen-Bradley 1747-L551 Ser B REV 4 CPU Processor Module.Refurbished$650
2026-06-23New Factory Sealed AB 1747-L551 / C SLC 500 5/05 CPU Processor Unit 1747-L551Brand New$1,295
2026-06-23Allen-Bradley SLC 500 Processor Unit PLC 1747-L551 Model SLC 500 1747-L551Pre-Owned$500
2026-06-22Allen-Bradley 1747-L551 Ser D CPU Processor FW13 manufactured 2018 TESTEDPre-Owned$790
2026-06-19AB 1747-L551 Ser B Brand New Quality Guaranteed Free ShipBrand New$1,262
2026-06-18ALLEN BRADLEY 1747-L551 SER C SLC 05/05 16K CONTROLLER - Fresh Remove WorksGreatPre-Owned$725
2026-06-17ALLEN BRADLEY 1747-L551 SER C SLC 05/05 16K CONTROLLER - Used, 30 Day Wty (G3)Pre-Owned$825
2026-06-16Allen-Bradley 1747-L551 SLC 5/05 16K Controller Allen Bradley 1747-L551Brand New$1,346
2026-06-16* ALLEN BRADLEY 1747-L551 SER C CPU PROCESSOR UNIT TESTEDPre-Owned$650
2026-06-11Allen-Bradley 1747-L551 SLC 500 Processor Unit Ser CPre-Owned$600
2026-06-09Allen Bradley SLC 500 1747-L551 Ser C CPU 5/05 Ethernet Processor (PARTS ONLY)Parts Only$245
2026-06-09Allen Bradley 1747-L551 SLC 500 Processor CPU SER B REV 4Pre-Owned$599
2026-06-07Allen-Bradley 1747-L551 SLC500 Processor Unit ModuleNew – Open box$550
2026-06-06Allen-Bradley 1747-L551 SLC500 Processor Unit ModuleNew – Open box$650
2026-06-06Allen-Bradley 1747-L551 SLC500 Processor Unit ModuleNew – Open box$650
2026-06-05New Factory Sealed AB 1747-L551 / C SLC 500 5/05 CPU Processor Unit 1747-L551Brand New$1,271
2026-06-04New Allen Bradley 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747 L551Brand New$1,191
2026-06-04New Factory Sealed AB 1747-L551 / D SLC 5/05 CPU Processor Unit Module 1747L551Brand New$1,280
2026-06-04Allen-Bradley 1747-L551 Ser A CPU ProcessorPre-Owned$600
2026-06-03Lot of 8 Allen Bradley 1747-L551 CPU 5/05 Module for SLC 500 PartsParts Only$1,600
2026-06-03Allen Bradley 1747-L551 Ser. C Rev. C CPU 5/05 Module for SLC 500 PartsParts Only$200

*Asking prices aggregated across 11 covered sellers, observed 25 Aug 2026.

Data captured August 31, 2026. Sold prices are individual observed eBay transactions, title-matched to 1747-L551. All tracked parts