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Siemens

Shop our collection of surplus Siemens PLCs. These industrial control systems have been used in a variety of industrial settings and have been fully tested for functionality and reliability. With models available, including the popular S7-300 and S7-1200 series, we have the perfect solution for your automation needs. Don't miss out on this opportunity to save on cost while still getting the industry-leading technology from Siemens. Browse our stock today and find the PLC that fits your specific needs.
  • 6ES5430-4UA14 Siemens
    Original price $327.25 - Original price $672.50
    Original price
    $327.25 - $672.50
    $327.25 - $672.50
    Current price $327.25

    6ES5430-4UA14 Siemens

    SIMATIC S5, Digital input 430 Isolated Compact design 32 inputs 24 V DC

  • 6ES5420-4UA12 Siemens
    Original price $462.00 - Original price $625.00
    Original price
    $625.00
    $462.00 - $625.00
    Current price $625.00

    6ES5420-4UA12 Siemens

    SIMATIC S5 420 DIGITAL INPUT MODULE NON-FLOATING 32 INPUTS, DC 24V COMPACT VERSION U

  • 6ES5816-1BB11 Siemens
    Original price $0.00 - Original price $700.00
    Original price
    $700.00
    $0.00 - $700.00
    Current price $700.00

    6ES5816-1BB11 Siemens

    6ES5 816-1BB11 Operating System Module for CPU944B

  • 6ES5377-0AA11 Siemens
    Original price $312.13 - Original price $326.92
    Original price
    $312.13 - $326.92
    $312.13 - $326.92
    Current price $312.13

    6ES5377-0AA11 Siemens

    SIMATIC S5, Memory module 377 Short design RAM, 16 KB

  • 6ES5788-8MA11 Siemens
    Original price $434.50 - Original price $459.25
    Original price
    $434.50 - $459.25
    $434.50 - $459.25
    Current price $434.50

    6ES5788-8MA11 Siemens

    SIMATIC S5, SIMULATION UNIT 788 for S5-90U/-95U/-100U, AND 100U/AND 200U Simulation of 8 input SIGNALS or 8 output signals

  • 6ES5420-7LA11 Siemens
    Original price $283.25 - Original price $875.00
    Original price
    $283.25 - $875.00
    $283.25 - $875.00
    Current price $283.25

    6ES5420-7LA11 Siemens

    SIMATIC S5, Digital input 420 Non-isolated for S5-115U 32 inputs 24 V DC

  • 6ES5440-8MA21 Siemens
    Original price $522.50 - Original price $525.00
    Original price
    $525.00
    $522.50 - $525.00
    Current price $525.00

    6ES5440-8MA21 Siemens

    SIMATIC S5 440 DIGITAL OUTPUT MODULE NON-FLOATING F. S5-90U/-95U/-100U, ET 100U, ET 200U,4 OUTPUTS 24V DC; 2A

  • 6ES5330-8MA11 Siemens
    Original price $0.00 - Original price $3,074.49
    Original price
    $0.00 - $3,074.49
    $0.00 - $3,074.49
    Current price $3,074.49

    6ES5330-8MA11 Siemens

    SIMATIC S5 330 DIAGNOSTICS MODULE F. S5-90U/-95U/-100U, ET 100U, ET 200U

  • 6ES5436-4UA12 Siemens
    Original price $324.78 - Original price $547.50
    Original price
    $324.78 - $547.50
    $324.78 - $547.50
    Current price $324.78

    6ES5436-4UA12 Siemens

    Simatic S5 436 Digital Input Module FLOATING, 16 INPUTS 115/240V AC

  • 6ES5441-8MA11 Siemens
    Original price $300.00 - Original price $345.51
    Original price
    $345.51
    $300.00 - $345.51
    Current price $345.51

    6ES5441-8MA11 Siemens

    SIMATIC S5, Digital output 441 Non-isolated for S5-90U/-95U/-100U, ET 100U, ET 200U 8 outputs 24 V DC, 0.5 A

  • 6ES5452-8MR11 Siemens
    Original price $300.00 - Original price $354.75
    Original price
    $354.75
    $300.00 - $354.75
    Current price $354.75

    6ES5452-8MR11 Siemens

    SIMATIC S5, Digital output 452 Isolated for S5-90U/-95U/-100U, ET 100U, ET 200U RELAIS CONTACT outputs DC 30V/AC 230 V

  • 6ES5453-4UA12 Siemens
    Original price $300.00 - Original price $689.45
    Original price
    $300.00 - $689.45
    $300.00 - $689.45
    Current price $300.00

    6ES5453-4UA12 Siemens

    SIMATIC S5, Digital output 453 Isolated Compact design U 16 x Outputs 24 V DC; 2A

  • 6ES5318-8MB11 Siemens
    Original price $409.75 - Original price $3,441.60
    Original price
    $409.75 - $3,441.60
    $409.75 - $3,441.60
    Current price $409.75

    6ES5318-8MB11 Siemens

    SIMATIC S5, IM318-B INTERFACE SLAVE INTERFACE, FOR ET200U TO SINEC L2-DP/-TF

  • 6ES5430-8MB11 Siemens
    Original price $0.00 - Original price $319.00
    Original price
    $0.00 - $319.00
    $0.00 - $319.00
    Current price $319.00

    6ES5430-8MB11 Siemens

    SIMATIC S5, Digital input 430 Isolated for S5-90U/-95U/-100U, ET 100U, ET 200U 4 inputs 24V-60V DC

  • 6AV3971-1NA02-0CA0 Siemens
    Original price $0.00 - Original price $2,186.45
    Original price
    $0.00 - $2,186.45
    $0.00 - $2,186.45
    Current price $2,186.45

    6AV3971-1NA02-0CA0 Siemens

    MEMORY SUBMODULE FOR OP20 WITH FIRMWARE FOR AS511, FAP, L1, 128 KBYTES

  • 6ES5421-8MA12 Siemens
    Original price $300.00 - Original price $343.75
    Original price
    $300.00 - $343.75
    $300.00 - $343.75
    Current price $300.00

    6ES5421-8MA12 Siemens

    SIMATIC S5, Digital input 421 Non-isolated for S5-90U/-95U/-100U, ET 100U, ET 200U 8 inputs 24 V DC

  • 6ES5422-8MA11 Siemens
    Original price $464.53 - Original price $975.00
    Original price
    $464.53 - $975.00
    $464.53 - $975.00
    Current price $464.53

    6ES5422-8MA11 Siemens

    SIMATIC S5 422 DIGITAL INPUT MODULE NON-FLOATING FOR S5-90U-95U-100U, ET 100U/200U, 16 INPUTS 24V.

  • 6ES5451-8MA11 Siemens
    Original price $556.33 - Original price $590.00
    Original price
    $556.33 - $590.00
    $556.33 - $590.00
    Current price $556.33

    6ES5451-8MA11 Siemens

    SIMATIC S5, Digital output 451 Isolated for S5-90U/-95U/-100U, ET 100U, ET 200U 8 outputs 24 V DC, 1A

  • 6ES5431-8MA11 Siemens
    Original price $0.00 - Original price $343.75
    Original price
    $0.00 - $343.75
    $0.00 - $343.75
    Current price $343.75

    6ES5431-8MA11 Siemens

    SIMATIC S5, Digital input 431 Isolated for S5-90U/-95U/-100U, ET 100U, ET 200U 8 inputs 24 V DC

  • 6ES5375-0LD11 Siemens
    Original price $418.00 - Original price $615.00
    Original price
    $418.00 - $615.00
    $418.00 - $615.00
    Current price $418.00

    6ES5375-0LD11 Siemens

    SIMATIC S5, Memory module 375 RAM, 8 KB

  • 6ES5377-0AB31 Siemens
    Original price $294.31 - Original price $325.08
    Original price
    $294.31 - $325.08
    $294.31 - $325.08
    Current price $294.31

    6ES5377-0AB31 Siemens

    SIMATIC S5, Memory module 377 long design RAM, 64 KB

  • 6ES5700-8MA11 Siemens
    Original price $283.64 - Original price $302.50
    Original price
    $302.50
    $283.64 - $302.50
    Current price $302.50

    6ES5700-8MA11 Siemens

    SIMATIC S5 BUS UNIT FOR S5-100U/ET 100U PLC WITH TERM.BLOCK FOR SCREW TERMINALS

  • 6ES5246-4UA11 Siemens
    Original price $1,247.50 - Original price $2,153.55
    Original price
    $1,247.50 - $2,153.55
    $1,247.50 - $2,153.55
    Current price $1,247.50

    6ES5246-4UA11 Siemens

    SIMATIC S5 IP 246 POSITIONING MODULE FOR DC DRIVES FORCED-VENTILATED F.INCREMENTAL POSITION ENCODERS

  • 6ES5445-3AA11 Siemens
    Original price $0.00 - Original price $550.00
    Original price
    $550.00
    $0.00 - $550.00
    Current price $550.00

    6ES5445-3AA11 Siemens

    SIMATIC S5, 445 DIGITAL OUTPUT MODULE, NON-ISOLATED, 32 OUTPUTS 24V DC/0.5A, COMPACT VERSION

  • 6ES5095-8MB02 Siemens
    Original price $812.50 - Original price $1,200.00
    Original price
    $812.50 - $1,200.00
    $812.50 - $1,200.00
    Current price $812.50

    6ES5095-8MB02 Siemens

    SIMATIC S5, S5-95U COMPACT UNIT WITH PROFIBUS INTERFACE

  • 6ES5405-7AB31 Siemens
    Original price $0.00 - Original price $2,416.85
    Original price
    $0.00 - $2,416.85
    $0.00 - $2,416.85
    Current price $2,416.85

    6ES5405-7AB31 Siemens

    SIMATIC S5,405 DIGITAL INPUT MODULE FLOATING 8 INPUTS AC 48V

  • 6ES5377-0AA31 Siemens
    Original price $1,242.25 - Original price $1,380.28
    Original price
    $1,242.25 - $1,380.28
    $1,242.25 - $1,380.28
    Current price $1,242.25

    6ES5377-0AA31 Siemens

    SIMATIC S5, 377 MEMORY SUBMOD. SHORT TYPE RAM, 64K BYTES

  • 6ES5434-4UA12 Siemens
    Original price $519.75 - Original price $598.50
    Original price
    $519.75 - $598.50
    $519.75 - $598.50
    Current price $519.75

    6ES5434-4UA12 Siemens

    SIMATIC S5, Digital input 434 Isolated Compact design U 32 inputs 5 V DC; 15 V

  • 6ES5752-0AA53 Siemens
    Original price $484.00 - Original price $638.58
    Original price
    $638.58
    $484.00 - $638.58
    Current price $638.58

    6ES5752-0AA53 Siemens

    SIMATIC S5, INTERFACE MODULE "PG-MODULE" FOR CPU 928B AND CPU 948

  • 6ES5457-7LA11 Siemens
    Original price $517.48 - Original price $1,220.95
    Original price
    $517.48 - $1,220.95
    $517.48 - $1,220.95
    Current price $517.48

    6ES5457-7LA11 Siemens

    SIMATIC S5 457 DIGITAL OUTPUT MODULE FLOATING, F. S5-115U PLC 32 OUTPUTS, 5/24V DC; 0.1 A

  • 6ES5101-8UC11 Siemens
    Original price $0.00 - Original price $960.00
    Original price
    $960.00
    $0.00 - $960.00
    Current price $960.00

    6ES5101-8UC11 Siemens

    SIMATIC S5 101U EXPANSION UNIT MAINS CONNECTION 220/240 V AC W/O MANUAL 20 INPUTS 24V DC 12 RELAY CONTACT OUTPUTS

  • 6ES5234-1AC11 Siemens
    Original price $0.00 - Original price $2,961.00
    Original price
    $2,961.00
    $0.00 - $2,961.00
    Current price $2,961.00

    6ES5234-1AC11 Siemens

    S5-210 MICROCOMPUTER SYSTEM MEMORY/PARAMETER ENTRY MODULE 12 EPROM RECEPTACLES W. 4K BYTES OF CMOS-RAM

  • 6ES5234-1AD11 Siemens
    Original price $0.00 - Original price $3,000.00
    Original price
    $3,000.00
    $0.00 - $3,000.00
    Current price $3,000.00

    6ES5234-1AD11 Siemens

    S5-210 MICROCOMPUTER SYSTEM MEMORY/PARAMETER ENTRY MODULE 12 EPROM RECEPTACLES W. 8 K BYTES OF CMOS-RAM

  • 6ES5240-1AA21 Siemens
    Original price $1,713.73 - Original price $2,770.00
    Original price
    $1,713.73 - $2,770.00
    $1,713.73 - $2,770.00
    Current price $1,713.73

    6ES5240-1AA21 Siemens

    SIMATIC S5, IP 240 Count.- POSITION FEEDBACK, and positioning module

  • 6ES5241-1AB11 Siemens
    Original price $1,500.00 - Original price $4,236.75
    Original price
    $1,500.00 - $4,236.75
    $1,500.00 - $4,236.75
    Current price $1,500.00

    6ES5241-1AB11 Siemens

    SIMATIC S5 IP 241 DIGITAL POSITION DECODER ENCODER MATCH.MOD.(1 CHANNEL) INCREMENTAL

  • 6ES5420-3BA11 Siemens
    Original price $343.75 - Original price $850.00
    Original price
    $343.75 - $850.00
    $343.75 - $850.00
    Current price $343.75

    6ES5420-3BA11 Siemens

    SIMATIC S5, 420 DIGITAL INPUT NON-ISOLATED 32 INPUTS, 24 V DC COMPACT VERSION K

  • 6ES5243-1AA13 Siemens
    Original price $2,425.50 - Original price $2,530.00
    Original price
    $2,425.50 - $2,530.00
    $2,425.50 - $2,530.00
    Current price $2,425.50

    6ES5243-1AA13 Siemens

    SIMATIC S5, Analog module IP 243 PC board complete 1A/D converter with 8 inputs, 3 D/A converters with 8 inputs

  • 6ES5421-8MA11 Siemens
    Original price $0.00 - Original price $2,442.65
    Original price
    $2,442.65
    $0.00 - $2,442.65
    Current price $2,442.65

    6ES5421-8MA11 Siemens

    SIMATIC S5,424 DIGIT.INPUT MOD. NON-FLOATING 8 INPUTS DC 24V F.PC/ET 100U

  • 6ES5244-3AA21 Siemens
    Original price $0.00 - Original price $850.00
    Original price
    $850.00
    $0.00 - $850.00
    Current price $850.00

    6ES5244-3AA21 Siemens

    SIMATIC S5, IP 244 TEMPERATURE CONTROL MODULE

  • 6ES5470-4UA11 Siemens
    Original price $4,743.00 - Original price $5,116.50
    Original price
    $4,743.00 - $5,116.50
    $4,743.00 - $5,116.50
    Current price $4,743.00

    6ES5470-4UA11 Siemens

    SIMATIC S5,470 ANALG.OUTP.MOD. FLOATING COMPACT VERSION U 8 OUTPUTS +-10V/0 TO 20MA

  • 6ES5470-7LB11 Siemens
    Original price $2,588.00 - Original price $2,910.60
    Original price
    $2,588.00 - $2,910.60
    $2,588.00 - $2,910.60
    Current price $2,588.00

    6ES5470-7LB11 Siemens

    SIMATIC S5 470 ANALOG OUTPUT MODULE FLOATING 8 OUTPUTS, +- 10 V FOR S5-115U PC

  • 6ES5460-4UA11 Siemens
    Original price $675.00 - Original price $1,475.00
    Original price
    $675.00 - $1,475.00
    $675.00 - $1,475.00
    Current price $675.00

    6ES5460-4UA11 Siemens

    SIMATIC S5,460 ANALOG INP.MOD. FLOATING 8 INPUTS COMPACT VERSION U

  • 6ES5440-8MA12 Siemens
    Original price $321.75 - Original price $367.32
    Original price
    $321.75 - $367.32
    $321.75 - $367.32
    Current price $321.75

    6ES5440-8MA12 Siemens

    SIMATIC S5 440 DIGITAL OUTPUT MODULE NON-FLOATING F. S5-90U/-95U/-100U, ET 100U, ET 200U,4 OUTPUTS 24V DC; 0.5A

  • 6ES5431-7LA11 Siemens
    Original price $437.25 - Original price $1,097.50
    Original price
    $437.25 - $1,097.50
    $437.25 - $1,097.50
    Current price $437.25

    6ES5431-7LA11 Siemens

    SIMATIC S5, Digital input 431 Isolated for S5-115U 16 Inputs 24-48V AC

  • 6ES5701-0LA11 Siemens
    Original price $915.48 - Original price $1,017.20
    Original price
    $915.48 - $1,017.20
    $915.48 - $1,017.20
    Current price $915.48

    6ES5701-0LA11 Siemens

    SIMATIC S5, ER 701-0 rack for expansion unit S5-115U

  • 6ES5183-3UA12 Siemens
    Original price $982.50 - Original price $1,324.98
    Original price
    $982.50 - $1,324.98
    $982.50 - $1,324.98
    Current price $982.50

    6ES5183-3UA12 Siemens

    SIMATIC S5 183U EXPANSION UNIT 21 SLOTS WITH FAN W/O INSTRUCTION MANUAL W.POW.SUPPLY 230/115/5V AC 18A

  • 6ES5470-7LC11 Siemens
    Original price $0.00 - Original price $1,372.50
    Original price
    $1,372.50
    $0.00 - $1,372.50
    Current price $1,372.50

    6ES5470-7LC11 Siemens

    SIMATIC S5 470 ANALOG OUTPUT MODULE FLOATING 8 OUTPUTS +1 TO +5 V, +4 TO +20 MA

  • 6ES5415-7AB11 Siemens
    Original price $368.47 - Original price $2,662.00
    Original price
    $368.47 - $2,662.00
    $368.47 - $2,662.00
    Current price $368.47

    6ES5415-7AB11 Siemens

    SIMATIC S5 415 DIGITAL OUTPUT MODULE GALVANICALLY ISOLATED 8 OUTPUTS, 115 V AC, 2 A