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PLCs & Automation

2,290 listings · 2,217 in stock

We have 2,217 listings in PLCs & Automation in stock right now, and every one is photographed on our own shelves, so you see the exact unit you will receive. The 6 categories here are led by PLC Modules & Accessories, PLC I/O Modules and PLC Processors & CPUs.

More about PLCs & Automation

The brands we stock most here are Siemens, Allen-Bradley and Mitsubishi. In terms of condition, there are 1,443 used, 481 open box, 245 new surplus, 28 sold for parts or repair and 20 refurbished. Prices start at $6.89 and go up to $14,998.89. We ship from Princeton, TX the same day when you order by 3 PM CT (Mon–Fri), with free shipping anywhere in the lower 48. Freight-size items are quoted after packing. Our 30-day guarantee covers every item here except those sold for parts or repair.

Categories in PLCs & Automation

1–24 of 2,290 results

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Eupec R55-00-278 Isopack B6HK Thyristor Diode

Eupec

R55-00-278

Eupec Isopack R55-00-278 B6HK Thyristor Diode 3-Phase Half Control Bridge Module

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$53.89

Moore Industries AB Signal Limiting Module

Moore Industries

Moore Industries SLM/4-20MA/4-20MA/117AC [AB] Si

Moore Industries SLM/4-20MA/4-20MA/117AC [AB] Signal Limiting Module Industrial

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$199.99

Allen-Bradley 1794-TB3 Flex I/O Terminal Base Unit PLC

Allen-Bradley

1794-TB3

Allen-Bradley 1794-TB3 Ser A Flex I/O 3-Wire Terminal Base Unit PLC Automation

New Surplus – Open Box

Only 2 left

Free shippingShips today by 3 PM CT

$23.89

Modicon AS-B882-239 Speed Counter Module 2 Point PLC

Modicon

AS-B882-239

Modicon AS-B882-239 High Speed Counter Module 2 Point PLC AEG Gould Automation

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$767.89

Beckhoff BK3150 Profibus Compact Bus Coupler PLC

Beckhoff

BK3150

Beckhoff BK3150 Profibus Compact Bus Coupler 24VDC PLC I/O Industrial Automation

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$64.89

Allen-Bradley 1492-CM1771-LD011 Swing-Arm Conversion Module

Allen-Bradley

1492-CM1771-LD011

Allen-Bradley 1492-CM1771-LD011 Swing-Arm Conversion Module 16-Point Output PLC

New Surplus – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$179.89

Foxboro FCP270 Processor I/A Series DCS Module

Foxboro

FCP270

Foxboro FCP270 P0917YZ Field Control Processor I/A Series DCS Module Automation

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$400.89

Schneider Electric TSXDSY32T2K 32 Transistor Output Module

Schneider Electric

TSXDSY32T2K

Schneider Electric TSXDSY32T2K Modicon Premium 32 Transistor Output Module 24VDC

New – Open Box

Only 2 left

Free shippingShips today by 3 PM CT

$78.89

Foxboro D0128CE-F Invensys Power Supply Module

Foxboro

D0128CE-F

Foxboro Invensys D0128CE-F Power Supply Module Potted Industrial Automation Part

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$30.89

Allen-Bradley 1734-OB4E Point I/O Sourcing Output Module

Allen-Bradley

1734-OB4E

Allen-Bradley 1734-OB4E Ser C Point I/O 4-Channel 24VDC Sourcing Output Module

New Surplus – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$21.89

Sanrex SSA250AA80 Power Semiconductor Module

Sanrex

SSA250AA80

SanRex SSA250AA80 Power Semiconductor Module Sansha Electric Japan Industrial

Used

Only 1 left

Free shippingShips today by 3 PM CT

$24.89

Allen-Bradley 1745-E105 SLC 100 Relay

Allen-Bradley

1745-E105

Allen-Bradley 1745-E105 SLC 100 Relay Output Expansion Unit Series C PLC Module

Used

Only 2 left

Free shippingShips today by 3 PM CT

$14.89

Foxboro P0917YZ Control Processor DCS Module

Foxboro

P0917YZ

Foxboro I/A Series FCP270 P0917YZ Field Control Processor DCS Module Automation

New – Open Box

Only 2 left

Free shippingShips today by 3 PM CT

$400.89

Allen-Bradley 1769-IF4 Analog Input Module PLC

Allen-Bradley

1769-IF4

Allen-Bradley 1769-IF4 Ser B Rev 2 Compact I/O 4-Channel Analog Input Module PLC

New Surplus – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$100.89

Beckhoff BK3120 12 MBaud PLC I/O Module

Beckhoff

BK3120

Beckhoff BK3120 PROFIBUS-DP Bus Coupler 24VDC 12 MBaud PLC I/O Module Industrial

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$81.89

Siemens 6ES7 972-0BB52-0XA0 Simatic Profibus Bus Connector

Siemens

6ES7 972-0BB52-0XA0

Siemens 6ES7 972-0BB52-0XA0 Simatic Profibus Bus Connector w/ PG Socket 12Mbps

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$8.89

Allen-Bradley 1747-PIC Computer Interface Converter

Allen-Bradley

1747-PIC

Allen-Bradley 1747-PIC SLC 500 Personal Computer Interface Converter Ser A PLC

New Surplus – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$41.89

GE Fanuc IC693MDL940L Series 90-30 Output Relay Module

GE Fanuc

IC693MDL940L

GE Fanuc IC693MDL940L Series 90-30 Output Relay Module 16 Point 2A Automation

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$155.89

GE Fanuc IC693MDL940L Series 90-30 Relay Output Module

GE Fanuc

IC693MDL940L

GE Fanuc IC693MDL940L Series 90-30 Relay Output Module 16 Point 2A PLC Control

New – Open Box

Only 1 left

Free shippingShips today by 3 PM CT

$155.89

Yaskawa Teach Pendant Handheld Operator

Yaskawa

Yaskawa YASNAC XRC Robot Teach Pendant Handheld

Yaskawa YASNAC XRC Robot Teach Pendant Handheld Operator Interface Unit Robotic

Used

Only 1 left

Free shippingShips today by 3 PM CT

$399.99

Allen-Bradley 1747-SDN SLC 500 DeviceNet Scanner Module

Allen-Bradley

1747-SDN

Allen-Bradley 1747-SDN Ser B SLC 500 DeviceNet Scanner Module FRN 4.015 PLC Part

Used

Only 1 left

Free shippingShips today by 3 PM CT

$25.89

Square D 8030 ROM-221 SY/MAX Series F2 Output Module

Square D

8030 ROM-221

Square D SY/MAX 8030 ROM-221 Series F2 Output Module 120VAC 30619-502-50 PLC I/O

Used

Only 1 left

Free shippingShips today by 3 PM CT

$14.89

Reliance Electric 45C270 Memory Expansion Module

Reliance Electric

45C270

Reliance Electric 45C270 8K Memory Expansion Module 802820-77RK J-3088A PLC Card

Used

Only 1 left

Free shippingShips today by 3 PM CT

$49.89

Reliance Electric 57C410B Isolated Analog Output Module

Reliance Electric

57C410B

Reliance Electric 57C410B Isolated Analog Output Module 4-Channel 10VDC 57410-1

Used

Only 1 left

Free shippingShips today by 3 PM CT

$58.89

PLCs & Automation: common questions

Do you have PLCs & Automation in stock?

Yes. 2,217 PLCs & Automation listings are in stock right now, priced from $6.89 to $14,998.89. Every one is photographed, and all of them are listed on this page.

Which brands do you carry in PLCs & Automation?

Mostly Siemens, Allen-Bradley and Mitsubishi, plus 251 more brands. The Brand filter on this page narrows the list to one maker.

Do in-stock items in PLCs & Automation ship the same day?

Yes, when you order by 3 PM CT on a business day (Mon–Fri): in-stock items ship the same day from Princeton, TX, with free shipping to the lower 48. Freight-size items are quoted after packing.

Can I request a part you don't list in PLCs & Automation?

Yes. Request a quote with the part number and we check our warehouse and our sourcing network. We answer within 1 hour during business hours (Mon–Fri 9–3:30 CT).