Allen-Bradley
1746-A7
Allen-Bradley 1746-A7 SLC 500 7-Slot Rack Chassis Series B PLC Modular 120VAC
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PLC Racks, Chassis & Power Supplies
205 listings · 172 in stock
205 PLC racks, chassis & power supplies listings from the brands you use, each one photographed. Free shipping to all 50 US states.
Weekly new-arrivals email for PLC Racks, Chassis & Power Supplies
Reliance Electric
802802-7RD
Reliance Electric 802802-7RD 45C1A AutoMate Digital I/O Rail 300V 10A 8 Slot PLC
Out of stock
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Reliance Electric
801421-4R
Reliance Electric 801421-4R AutoMate 35 PLC Power Supply 230VAC Industrial Unit
Out of stock
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Fanuc
A05B-2400-C060
Fanuc A05B-2400-C060 Control Unit A16B-3200-0330 A16B-2203-0370 2-Slot Rack
Out of stock
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Iwaki
Iwaki 24 Ohm 20K Ohm Dual Wirewound Resistor BA
Iwaki 24 Ohm 20K Ohm Dual Wirewound Resistor BA 0220 Chassis Mount Power Module
Out of stock
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Request a quote: Iwaki Iwaki 24 Ohm 20K Ohm Dual Wirewound Resistor BA
Siemens
6ES7 3071BA010AA0
Siemens 6ES7307-1BA01-0AA0 SIMATIC PS307 Power Supply S7-300 PLC Automation
Out of stock
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Schneider Electric
140XBP01000
Schneider Modicon 140XBP01000 10-Slot Backplate Quantum PLC Industrial Control
Out of stock
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Industrial part
Control Technology 2700 Series Automation Contro
Control Technology 2700 Series Automation Controller Rack Analog I/O Cards PLC
Out of stock
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Allen-Bradley
1756-A17
Allen Bradley 1756-A17 ControlLogix Back Pan Board 17-Slot Industrial PLC Module
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Allen-Bradley
1747-L20C
Allen-Bradley 1747-L20C Ser C SLC 500 Processor w/ 1746-A2 Ser A 2-Slot Chassis
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Siemens
6ES5700-1LA1
Siemens 6ES5700-1LA1 SIMATIC S5 CR1 Central Controller 7-Slot Card Rack Module
Out of stock
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HP
M1088-66501
HP Agilent M1088-66501 RS-232 Interface Card Patient Monitor Rack Board Module
Out of stock
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Industrial part
070-137901-A
Tecrol 070-137901-A Industrial Power Supply Module Automation Replacement OEM
Out of stock
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Need more units than we list, a part you don't see here, or prices for a whole list? Send us the part numbers and quantities and we reply within 1 hour during business hours (Mon to Fri 9 to 4:30 CT).
Guides for PLC Racks, Chassis & Power Supplies
- Legacy PLCsSLC 500 End of Life: Keep Running or Migrate?Where the SLC 500 stands, which spares keep one running, and how a phased move to CompactLogix keeps downtime short.
- TroubleshootingAllen-Bradley PLC Battery Low: Which Battery and Safe SwapThe battery for each controller family, what the BAT or BATT LED and the T10:C10 minor fault mean, how long you have, replacing it safely, and whether the program survives.
Troubleshooting guides
- TroubleshootingPLC Power Supply Failure: Symptoms, Checks & ReplacementSymptoms of a failed rack supply, input ranges and outputs for 1756-PA72/PB72/PA75, 1746-P1/P2/P4 and PS 307, Rockwell's and Siemens' checks, and when to replace it.
- TroubleshootingPLC Won't Go to RUN? Allen-Bradley Mode and Fault ChecksKeyswitch and mode-switch positions, the faults that block RUN, firmware and project mismatches, missing or wrong I/O modules, forces, and the order to check them in.
- TroubleshootingControlLogix & CompactLogix Major Fault Codes ExplainedMajor fault types and codes (T01 power-up to T07 memory), where to read them in Studio 5000, minor vs major vs I/O faults, the first checks and clearing a fault safely.
- TroubleshootingSiemens S7-300/S7-400 SF & BF LEDs and Diagnostic BufferSF vs BF (and INTF, EXTF, BUSxF on the S7-400), steady vs flashing, reading the diagnostic buffer in STEP 7, and the first checks for modules, PROFIBUS, PROFINET and backup batteries.