1747-L551 Sold Price History

Allen-Bradley · observed sold prices, the 90 days ending October 17, 2026

Sold listings (90d)110

Median sold$848

Sold range$49.99–$2,900

Median ask*$1,500

Sold vs ask-43%

Lifecycle status: Discontinued per Rockwell Automation, checked 2026-10-17.

Median sold price by condition

Condition	Sold	Median	Range
New / surplus	21	$1,366	$248–$2,475
Open box	18	$1,112	$389–$2,900
Refurbished	1	$750	$750–$750
Used	69	$750	$110–$1,249
For parts / not working	1	$49.99	$49.99–$49.99

Median sold ($848) vs median asking price across covered sellers ($1,500): -43%. Condition mix differs between sold and asking listings; see methodology.

Buying or selling a 1747-L551?
We track what these parts actually sell for. For sourcing help, a quote sanity-check, or broker data feeds, email contact@plccomps.com.

Individual sold listings (110)

Date	Listing	Condition	Sold price
2026-10-16	AB 1747-L551 /C SLC CPU Processor Unit Module Allen Bradley US Free Tax	Brand New	$1,335
2026-10-13	Allen Bradley 1747-L551 Ser C 1747-OS501 C FRN 11 SLC 500 5/05 CPU 16K	Pre-Owned	$1,175
2026-10-10	Allen Bradley 1747-L551 Series B SLC5/05 Processor Missing Door	Pre-Owned	$110
2026-10-09	ALLEN BRADLEY 1747-L551 SER.B PROCESSOR UNIT W/O KEY NSNP	New – Open box	$1,620
2026-10-09	Allen Bradley 1747-L551 /C frn 11 SLC 500 5/05 Ethernet PLC 1747 L551 163B	Pre-Owned	$999
2026-10-06	Allen-Bradley 1747-L551 SLC 5/05 Processor 16K Ethernet RS-232 Series B	New – Open box	$389
2026-10-02	Allen-Bradley SLC 500 Processor Unit 1747-L551 Series C Rev A	New – Open box	$1,889
2026-10-02	AB 1747-L551 / C SLC 500 5/05 CPU Processor Unit 1747-L551	New – Open box	$452
2026-10-01	Allen Bradley 1747-L551 /A SLC 500 5/05 16K Memory Ethernet/RS-232 Controller	Pre-Owned	$883
2026-09-30	Allen-Bradley 1747-L551 Ser A CPU Processor SLC 5/05 NO DOOR	Pre-Owned	$750
2026-09-30	New Factory Sealed AB 1747-L551 / C SLC 500 5/05 CPU Processor Unit 1747-L551	Brand New	$1,480
2026-09-29	Allen Bradley 1747-L551 /C SLC 500 5/05 Processor 16K Memory 1747L551 Ethernet	Pre-Owned	$1,000
2026-09-29	Allen-Bradley SLC 500 Processor Unit 1747-L551 Series C Rev A	New – Open box	$1,689
2026-09-26	Allen-Bradley SLC 500 PLC Processor Module 1747-L551 With Keys New Open Box!	New – Open box	$700
2026-09-26	Allen-Bradley SLC 500 PLC Processor Module 1747-L551 With Keys New Open Box!	New – Open box	$700
2026-09-25	Allen-Bradley SLC500 Processor Unit 1747-L551	Pre-Owned	$575
2026-09-25	ALLEN BRADLEY 1747-L551 SLC 500 PROCESSOR 5/05 CPU SERIES C REV 5	Pre-Owned	$795
2026-09-24	Sealed AB-AB 1747-L551/C SLC 5/05 CPU Processor Unit Module 1747L551	Brand New	$1,366
2026-09-24	Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor 16K Memory	Pre-Owned	$900
2026-09-24	Allen-Bradley 1747-L551 \| SLC 5/05 CPU Controller Module (16 KB Memory) SER D	Pre-Owned	$1,000
2026-09-24	Allen-Bradley 1747-L551 \| SLC 5/05 CPU Controller Module (16 KB Memory) SER D	Pre-Owned	$1,000
2026-09-24	Allen-Bradley SLC 500 SLC 5/05 CPU Processor Unit 1747-L551, Ser. B	Pre-Owned	$495
2026-09-24	Allen-Bradley SLC 500 SLC 5/05 CPU PLC Processor 1747-L551	Pre-Owned	$731
2026-09-23	Allen Bradley SLC505 1747-L551	Parts Only	$49.99
2026-09-23	Surplus New Allen Bradley 1747-L551 /D SLC 500 5/05 Ethernet/RS-232 Processor	New – Open box	$2,900
2026-09-22	Allen Bradley 1747-L551 Ser C 1747-OS501 C FRN 10 SLC 500 5/05 CPU Processor 16K	Pre-Owned	$543
2026-09-22	Allen-Bradley 1747-L551 SER C SLC 500 Processor Unit (SLC 5/05) WITHOUT BOX	New – Open box	$1,000
2026-09-20	Allen-Bradley 1747-L551 /C SLC 500 SLC 5/05 E-Net/RS-232 16K Memory Controller	Pre-Owned	$846
2026-09-19	Allen Bradley 1747-L551 Ser C 1747-OS501 C FRN 11 SLC 500 5/05 CPU Processor 16K	New – Open box	$875
2026-09-19	1PCS Brand New AB 1747-L551 SER C SLC 500 5/05 Module 1747L551 Fast delivery	Brand New	$1,401
2026-09-18	Allen Bradley 1747-L551 /C SLC 500 5/05 16K Memory Ethernet/RS-232 Controller	Pre-Owned	$600
2026-09-18	Allen-Bradley 1747-L551 Ser B CPU Processor	New – Open box	$750
2026-09-17	NEW AB 1747-L551 SER C SLC500 PLC CPU Processor Unit Module 1747L551	Brand New	$1,366
2026-09-17	Allen Bradley 1747-L551 SLC 500 5/05 Ethernet PLC 1747 L551 163B SER A	Pre-Owned	$700
2026-09-17	Allen-Bradley 1747-L551 SER C SLC 500 Processor Unit (SLC 5/05) NEW OPEN BOX	New – Open box	$1,200
2026-09-16	Allen-Bradley 1747-L551 SLC 5/05 CPU Processor Unit	Pre-Owned	$826
2026-09-15	Allen-Bradley 1747-L551 SER C SLC 500 Processor Unit (SLC 5/05) NEW OPEN BOX	New – Open box	$1,200
2026-09-15	Allen-Bradley SLC 500 Processor Unit 1747-L551 Series C Rev A	New – Open box	$1,689
2026-09-15	Allen Bradley 1747-L551 SLC 500 5/05 Ethernet PLC 1747 L551 163B SER C	Pre-Owned	$600
2026-09-15	Allen-Bradley 1747-L551 Ser B SLC 5/05 CPU 16K Ethernet Processor Box Keys Batt	New (Other)	$248
2026-09-14	Allen Bradley 1747-L551 /C frn 11 SLC 500 5/05 Ethernet PLC 1747 L551 163B	Pre-Owned	$999
2026-09-10	Allen-Bradley SLC 500 SLC 5/05 CPU Processor Unit 1747-L551 Series C FRN 9	Pre-Owned	$550
2026-09-10	Surplus Allen Bradley 1747-L551 /CFRN 11 SLC 500 SLC 5/05 E-Net/RS-232 CPU	New – Open box	$2,150
2026-09-10	New New PLC-AB 1747-L551 SER B SLC500 PLC CPU Processor Unit Module	Brand New	$1,366
2026-09-09	Allen-Bradley SLC 500 1747-L551 CPU, ser A	Pre-Owned	$615
2026-09-09	New Factory Sealed AB 1747-L551 / C SLC 500 5/05 CPU Processor Unit 1747-L551	Brand New	$1,356
2026-09-09	AB 1747-L551 SLC 5/05 CPU Processor Unit Module	Pre-Owned	$1,080
2026-09-08	Allen-Bradley SLC500 Processor 5/05 CPU 1747-L551, SER B, Rev 4, Tested	Pre-Owned	$650
2026-09-07	Allen-Bradley SLC 500 PLC CPU Central Processing Unit Processor Module 1747-L551	Pre-Owned	$600
2026-09-07	Allen-Bradley 1747-L551 SER B SLC 500 Processor Unit	New – Open box	$1,195
2026-09-04	New Factory Sealed AB 1747-L551 / C SLC 500 5/05 CPU Processor Unit 1747-L551	Brand New	$1,391
2026-09-03	Allen Bradley 1747-L551 SLC 500 SLC 5/05 CPU Processor Controller Ser C Rev 5	Pre-Owned	$650
2026-09-02	Allen-Bradley SLC 500 PLC Processor Unit Module, Model 1747-L551 MPN 1747-L551	Pre-Owned	$650
2026-09-02	Allen Bradley 1747-L551 SLC 500 5/05 CPU Processor Ser A	Pre-Owned	$599
2026-09-01	Allen-Bradley SLC500 Processor Unit 1747-L551	Pre-Owned	$650
2026-08-31	Allen Bradley 1747-L551 /D frn 13 SLC 500 5/05 Ethernet PLC 1747 L551 163D	Pre-Owned	$1,249
2026-08-30	New ListingAllen Bradley 1747-L551 C TESTED	Pre-Owned	$499
2026-08-29	Allen Bradley 1747-L551 C TESTED	Pre-Owned	$499
2026-08-27	Allen-Bradley 1747-L551 Series C SLC 5/05 16K PLC CPU Ethernet RS-232	Pre-Owned	$694
2026-08-26	Allen Bradley 1747-L551 SLC 500 SLC 5/05 CPU Processor Controller Ser C Rev 5	Pre-Owned	$760
2026-08-25	Allen Bradley 1747-L551 SLC 500 SLC 5/05 CPU Processor Controller Ser C Rev 5	Pre-Owned	$700
2026-08-24	USED Allen Bradley 1747-L551/A SLC 500 Processor Unit Proc. Rev. 1 Loose Cover	Pre-Owned	$775
2026-08-21	Allen-Bradley SLC 500 Processor CPU Series C FRN 10 1747-L551 5/05 CPU	Pre-Owned	$820
2026-08-21	NEW Original Sealed AB 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747L551	Brand New	$1,800
2026-08-20	Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!	Pre-Owned	$750
2026-08-20	AB CPU 5/05 SLC 500 1747-L551 SER C REV 5 FRN 10	Pre-Owned	$862
2026-08-20	Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!	Pre-Owned	$750
2026-08-20	Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!	Pre-Owned	$750
2026-08-20	SEALED Allen Bradley 1747-L551 /C SLC500 5/05 Ethernet/RS-232 Processor 1747L551	Brand New	$2,475
2026-08-20	New Sealed AB 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747L551	Brand New	$1,288
2026-08-19	Allen-Bradley SLC 500 SLC 5/05 CPU Processor Unit Module 1747-L551	New – Open box	$1,030
2026-08-18	New Allen-Bradley 1747-L551 SER C SLC500 5/05 CPU Processor Unit Module 1747L551	Brand New	$1,285
2026-08-17	Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!	Pre-Owned	$700
2026-08-17	New Sealed AB 1747-L551 SLC CPU Processor Unit Module Free Shipping	Brand New	$1,366
2026-08-17	Allen Bradley 1747-L551 /C SLC 500 5/05 16K Memory RS-232/Ethernet Controller	Pre-Owned	$1,028
2026-08-16	AB 1747-L551 /C SLC CPU Processor Unit Module Allen Bradley US Free Tax	Brand New	$1,284
2026-08-15	Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!	Pre-Owned	$600
2026-08-14	USED Allen Bradley 1747-L551/A SLC 500 Processor Unit Proc. Rev. 1 OS501	Pre-Owned	$800
2026-08-13	Allen Bradley AB 1747-L551 Ser C Proc Rev 5 SLC 500 5/05 Processor Unit FRN 10	Pre-Owned	$850
2026-08-12	Allen Bradley 1747-L551 Ser B SLC 5/05 CPU Processor Unit Module 1747L551 PLC	Pre-Owned	$895
2026-08-12	Allen Bradley 1747-L551 SLC 500 SLC 5/05 CPU Processor Controller Ser C Rev 5	Pre-Owned	$750
2026-08-11	Allen Bradley SLC 5/05 16K Controller 1747-L551	Brand New	$1,200
2026-08-10	Allen-Bradley SLC5/05 1747-L551 CPU Processor -Free Shipping!	Pre-Owned	$975
2026-08-10	Allen-Bradley 1747-L551 \| SLC 5/05 CPU Controller Module (16 KB Memory) SER D	Pre-Owned	$1,000
2026-08-10	Allen-Bradley 1747-L551 /C 1747-OS501 C FRN 10 SLC 500 5/05 CPU Processor	Pre-Owned	$940
2026-08-08	NEW Factory Sealed AB 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747L551	Brand New	$1,375
2026-08-06	Allen-Bradley SLC 500 Processor Unit 1747-L551 PLC Controller	New – Open box	$600
2026-08-06	Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module Missing front	Pre-Owned	$600
2026-08-05	Allen Bradley AB 1747-L551 Ser C SLC 500 5/05 16K Controller FW13	Pre-Owned	$850
2026-08-05	Allen Bradley 1747-L551 /B SLC 500 5/05 Ethernet/RS-232 16K Memory Controller	Pre-Owned	$881
2026-08-05	Allen-Bradley 1747-L551 SLC 500 Controller Processor Unit Rockwell Automation	Brand New	$2,375
2026-08-05	ALLEN BRADLEY 1747-L551 SLC 500 PROCESSOR UNIT CPU SER B REV 4 GUARANTEED	Pre-Owned	$599
2026-08-04	1PC New Factory Sealed 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747L551	Brand New	$1,366
2026-07-31	Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLC	Pre-Owned	$700
2026-07-31	Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLC	Pre-Owned	$750
2026-07-31	1PC New Sealed AB 1747-L551 /C SLC 5/05 CPU Processor Unit Module 1747 L551	Brand New	$1,366
2026-07-31	New Factory Sealed AB 1747-L551 SER C SLC 500 5/05 CPU Processor Unit 1747L551	Brand New	$1,366
2026-07-30	ALLEN BRADLEY 1747-L551 SLC 500 PROCESSOR UNIT CPU SER. B REV. 4	Pre-Owned	$800
2026-07-30	Allen Bradley 1747-L551 Ser C 1747-OS501 w/Key (TESTED)	Pre-Owned	$750
2026-07-28	ALLEN-BRADLEY / 1747-L551 / SLC 500 / 5/05 16K PLC PROCESSOR	Pre-Owned	$600
2026-07-28	TESTED Allen Bradley 1747-L551 Series C SLC 500 SLC 5/05 CPU	Pre-Owned	$980
2026-07-27	Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLC	Pre-Owned	$895
2026-07-27	Allen Bradley 1747-L551 Ser C 1747-OS501 w/Key (TESTED)	Pre-Owned	$750
2026-07-25	ALLEN BRADLEY 1747-L551 SLC 500 PROCESSOR UNIT CPU SER. D FAST SHIP	Pre-Owned	$1,100
2026-07-23	Allen Bradley 1747-L551 Ser A SLC 500 No key AS SHOWN	Pre-Owned	$700
2026-07-22	Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLC	Pre-Owned	$800
2026-07-22	Allen Bradley AB 1747-L551 Ser C FW 13 SLC 500 5/05 Processor + New Battery	Refurbished	$750
2026-07-21	Allen Bradley 1747-L551 /B SLC 500 5/05 16K Memory RS-232/Ethernet Controller	Pre-Owned	$1,000
2026-07-20	Allen-Bradley 1747-L551 Ser C CPU Processor	Pre-Owned	$785
2026-07-20	Allen Bradley 1747-L551 Ser C SLC 5/05 CPU Processor Unit Module 1747L551 PLC	Pre-Owned	$790

Related tracked parts

1747-L542 Allen-Bradley SLC 500 SLC 5/04 processor CPU
1785-L40E Allen-Bradley PLC-5 Ethernet processor CPU
1785-L80B Allen-Bradley PLC-5 processor CPU
1756-L61 Allen-Bradley ControlLogix processor CPU

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

Data captured October 17, 2026. Sold prices are individual observed eBay transactions, title-matched to 1747-L551. All tracked parts