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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.
  • 6ES7441-2AA03-0AE0 Siemens
    Original price $467.47 - Original price $2,487.10
    Original price
    $467.47 - $2,487.10
    $467.47 - $2,487.10
    Current price $467.47

    6ES7441-2AA03-0AE0 Siemens

    SIMATIC S7-400, CP 441-2 COMMUNICATIONS MODULE FOR POINT TO POINT CONNECTIONS 2 CHANNELS INCL. CONFIG. PACKAGE ON CD

  • 6ES7463-2AA00-0AA0 Siemens
    Original price $1,063.63 - Original price $1,324.98
    Original price
    $1,063.63 - $1,324.98
    $1,063.63 - $1,324.98
    Current price $1,063.63

    6ES7463-2AA00-0AA0 Siemens

    Simatic S7-400, IM463-2 TRANSMITTER Interface Module FOR DISTRIBUTED CONNECTION TO Simatic S5 EXPANSION Modules VIA IM314, UP TO 600 M

  • 6ES7431-1KF00-0AB0 Siemens
    Original price $1,499.98 - Original price $1,749.98
    Original price
    $1,749.98
    $1,499.98 - $1,749.98
    Current price $1,749.98

    6ES7431-1KF00-0AB0 Siemens

    Simatic S7-400, SM431 ANALOG Input Module OPTIC. ISOLATED, 8 AI, 13 BIT RESOLUTION, U/I/RESIST.

  • 6ES7450-1AP00-0AE0 Siemens
    Original price $990.00 - Original price $2,107.00
    Original price
    $990.00 - $2,107.00
    $990.00 - $2,107.00
    Current price $990.00

    6ES7450-1AP00-0AE0 Siemens

    SIMATIC S7-400, function module FM 450-1 for counter function with 2 channels incl. configuration package on CD

  • 6ES7422-1HH00-0AA0 Siemens
    Original price $519.75 - Original price $2,472.98
    Original price
    $519.75 - $2,472.98
    $519.75 - $2,472.98
    Current price $519.75

    6ES7422-1HH00-0AA0 Siemens

    Simatic S7-400, SM422 Digital Output MODULE, OPTIC. ISOLATED, 16 DO, 5..230V AC, 5A RELAY

  • 6ES7421-7BH01-0AB0 Siemens
    Original price $522.50 - Original price $2,219.60
    Original price
    $522.50 - $2,219.60
    $522.50 - $2,219.60
    Current price $522.50

    6ES7421-7BH01-0AB0 Siemens

    SIMATIC S7-400, DIGITAL INPUT SM 421, GALVANICALLY ISOLATED, 16 DI, 24V DC WITH 0.05 MS INPUT DELAY, ALARM, DIAGNOSTICS

  • 6ES7461-0AA01-0AA0 Siemens
    Original price $622.50 - Original price $897.50
    Original price
    $897.50
    $622.50 - $897.50
    Current price $897.50

    6ES7461-0AA01-0AA0 Siemens

    SIMATIC S7-400 IM 461-0 Receive Interface Module for Central Rack Expansion up to 5m, transmission of P and C bus, plugs into Expansion Rack, can b...

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  • 6ES7964-2AA04-0AB0 Siemens
    Original price $800.00 - Original price $1,972.81
    Original price
    $800.00 - $1,972.81
    $800.00 - $1,972.81
    Current price $800.00

    6ES7964-2AA04-0AB0 Siemens

    SIMATIC S7, IF964-DP INTERFACE MODULE DP MASTER FOR S7-400

  • 6ES7460-1BA01-0AB0 Siemens
    Original price $509.44 - Original price $907.50
    Original price
    $907.50
    $509.44 - $907.50
    Current price $907.50

    6ES7460-1BA01-0AB0 Siemens

    Simatic S7-400, IM460-1 TRANSMITTER Interface MODULE, FOR CENTRALIZED CONNECTION with PS TRANSMISSION W/O K BUS

  • 6ES7422-1BH11-0AA0 Siemens
    Original price $300.00 - Original price $1,896.30
    Original price
    $300.00 - $1,896.30
    $300.00 - $1,896.30
    Current price $300.00

    6ES7422-1BH11-0AA0 Siemens

    Simatic S7-400, SM422 Digital Output MODULE, OPTIC. ISOLATED, 16 DO, 24V DC, 2A

  • 6ES7421-1BL01-0AA0 Siemens
    Original price $300.00 - Original price $352.00
    Original price
    $300.00 - $352.00
    $300.00 - $352.00
    Current price $300.00

    6ES7421-1BL01-0AA0 Siemens

    SIMATIC S7-400, SM 421 DIGITAL INPUT MODULE, OPTIC. ISOLATED, 32 DI, 24V DC

  • 6ES7232-4HD30-0XB0 Siemens
    Original price $0.00 - Original price $675.00
    Original price
    $0.00 - $675.00
    $0.00 - $675.00
    Current price $675.00

    6ES7232-4HD30-0XB0 Siemens

    SIMATIC S7-1200, Analog output, SM 1232, 4 AO, +/-10 V, 14-bit resolution, or 0-20 mA, 13-bit resolution

  • 6ES7231-5PF32-0XB0 Siemens
    Original price $689.68 - Original price $1,847.30
    Original price
    $689.68 - $1,847.30
    $689.68 - $1,847.30
    Current price $689.68

    6ES7231-5PF32-0XB0 Siemens

    SIMATIC S7-1200, Analog input, SM 1231 RTD, 8xAI RTD module

  • 6ES7223-1PL30-0XB0 Siemens
    Original price $611.35 - Original price $812.50
    Original price
    $611.35 - $812.50
    $611.35 - $812.50
    Current price $611.35

    6ES7223-1PL30-0XB0 Siemens

    SIMATIC S7-1200, Digital I/O SM 1223, 16 DI/16 DO, 16 DI 24 V DC, Sink/Source, 16 DO, relay 2 A

  • 6ES7232-4HD32-0XB0 Siemens
    Original price $537.63 - Original price $772.50
    Original price
    $772.50
    $537.63 - $772.50
    Current price $772.50

    6ES7232-4HD32-0XB0 Siemens

    Simatic S7-1200, ANALOG OUTPUT, SM1232, 4 AO, +/-10V, 14 BIT RESOLUTION, OR 0 - 20mA/4 - 20mA, 13 BIT RESOLUTION

  • 6ES7234-4HE30-0XB0 Siemens
    Original price $550.00 - Original price $968.20
    Original price
    $968.20
    $550.00 - $968.20
    Current price $968.20

    6ES7234-4HE30-0XB0 Siemens

    SIMATIC S7-1200, analog I/O SM 1234, 4 AI/2 AO, +/-10 V, 14-bit resolution, or 0-20 mA, 13-bit resolution

  • 6ES7231-4HF32-0XB0 Siemens
    Original price $518.29 - Original price $1,360.10
    Original price
    $518.29 - $1,360.10
    $518.29 - $1,360.10
    Current price $518.29

    6ES7231-4HF32-0XB0 Siemens

    SIMATIC S7-1200, Analog input, SM 1231, 8 AI, +/-10 V, +/-5 V, +/-2.5 V, or 0-20 mA/4-20 mA, 12 bit+sign or (13 bit ADC)

  • 6ES7231-5ND32-0XB0 Siemens
    Original price $0.00 - Original price $997.50
    Original price
    $997.50
    $0.00 - $997.50
    Current price $997.50

    6ES7231-5ND32-0XB0 Siemens

    SIMATIC S7-1200, Analog input, SM 1231, 4 AI, +/-10 V, +/-5 V, +/-2.5 V, +/-1.25 or 0-20 mA/4-20 mA, 15 bit+sign bit

  • 6ES7234-4HE32-0XB0 Siemens
    Original price $513.98 - Original price $750.00
    Original price
    $513.98 - $750.00
    $513.98 - $750.00
    Current price $513.98

    6ES7234-4HE32-0XB0 Siemens

    SIMATIC S7-1200, analog I/O module SM 1234, 4 AI/2 AO, +/-10 V, 14-bit resolution or 0 (4)-20mA, 13-bit resolution

  • 6ES7231-5QD32-0XB0 Siemens
    Original price $505.73 - Original price $1,285.00
    Original price
    $505.73 - $1,285.00
    $505.73 - $1,285.00
    Current price $505.73

    6ES7231-5QD32-0XB0 Siemens

    SIMATIC S7-1200, Analog input, SM 1231 TC, 4 AI thermocouples

  • 6ES7231-5PD32-0XB0 Siemens
    Original price $795.00 - Original price $1,875.00
    Original price
    $795.00 - $1,875.00
    $795.00 - $1,875.00
    Current price $795.00

    6ES7231-5PD32-0XB0 Siemens

    SIMATIC S7-1200, ANALOG INPUT, SM 1231 RTD, 4 X AI RTD MODULE

  • 6ES7223-1BL30-0XB0 Siemens
    Original price $0.00 - Original price $1,337.50
    Original price
    $1,337.50
    $0.00 - $1,337.50
    Current price $1,337.50

    6ES7223-1BL30-0XB0 Siemens

    SIMATIC S7-1200, Digital I/O SM 1223, 16 DI/16 DO, 16 DI 24 V DC, Sink/Source, 16 DO, transistor 0.5 A

  • 6ES7223-1PL32-0XB0 Siemens
    Original price $327.25 - Original price $760.08
    Original price
    $327.25 - $760.08
    $327.25 - $760.08
    Current price $327.25

    6ES7223-1PL32-0XB0 Siemens

    SIMATIC S7-1200, DIGITAL I/O SM 1223, 16DI / 16DO, 16DI DC 24 V, SINK/SOURCE, 16DO, RELAY 2A

  • 6ES7232-4HB32-0XB0 Siemens
    Original price $1,072.50 - Original price $2,450.15
    Original price
    $1,072.50 - $2,450.15
    $1,072.50 - $2,450.15
    Current price $1,072.50

    6ES7232-4HB32-0XB0 Siemens

    SIMATIC S7-1200, Analog output, SM 1232, 2 AO, +/-10 V, 14-bit resolution, or 0-20 mA/4-20 mA, 13-bit resolution

  • 6ES7231-4HD32-0XB0 Siemens
    Original price $329.86 - Original price $796.88
    Original price
    $329.86 - $796.88
    $329.86 - $796.88
    Current price $329.86

    6ES7231-4HD32-0XB0 Siemens

    Simatic S7-1200, ANALOG INPUT, SM1231, 4 AI, +/-10V, +/-5V, +/-2.5V, OR 0-20mA/4-20mA, 12 BIT + SIGN BIT (13 BIT ADC)

  • 6ES7226-6DA32-0XB0 Siemens
    Original price $357.47 - Original price $525.00
    Original price
    $357.47 - $525.00
    $357.47 - $525.00
    Current price $357.47

    6ES7226-6DA32-0XB0 Siemens

    SIMATIC S7-1200, DIGITAL OUTPUT SM 1226, F-DQ 4X 24VDC 2A, PROFISAFE, 70 MM WIDTH, UP TO PL E (ISO 13849-1)/ UP TO SIL3 (IEC 61508)

  • 6ES7226-6BA32-0XB0 Siemens
    Original price $461.15 - Original price $495.14
    Original price
    $461.15 - $495.14
    $461.15 - $495.14
    Current price $461.15

    6ES7226-6BA32-0XB0 Siemens

    SIMATIC S7-1200, DIGITAL INPUT, SM 1226, F-DI 16X 24VDC, PROFISAFE, 70 MM WIDTH, UP TO PL E (ISO 13849-1)/ UP TO SIL3 (IEC 61508)

  • 6ES7221-1BH32-0XB0 Siemens
    Original price $281.02 - Original price $481.25
    Original price
    $281.02 - $481.25
    $281.02 - $481.25
    Current price $281.02

    6ES7221-1BH32-0XB0 Siemens

    SIMATIC S7-1200, Digital input SM 1221, 16 DI, 24 V DC, Sink/Source

  • 6ES7223-1BH32-0XB0 Siemens
    Original price $300.00 - Original price $660.00
    Original price
    $300.00 - $660.00
    $300.00 - $660.00
    Current price $300.00

    6ES7223-1BH32-0XB0 Siemens

    SIMATIC S7-1200, Digital I/O SM 1223, 8 DI/8 DO, 8 DI 24 V DC, Sink/Source, 8 DO, transistor 0.5 A

  • 6ES7222-1HH32-0XB0 Siemens
    Original price $291.50 - Original price $522.50
    Original price
    $291.50 - $522.50
    $291.50 - $522.50
    Current price $291.50

    6ES7222-1HH32-0XB0 Siemens

    SIMATIC S7-1200, Digital output SM 1222, 16 DO, relay 2 A

  • 6ES7222-1BH32-0XB0 Siemens
    Original price $300.00 - Original price $682.50
    Original price
    $300.00 - $682.50
    $300.00 - $682.50
    Current price $300.00

    6ES7222-1BH32-0XB0 Siemens

    SIMATIC S7-1200, Digital output SM 1222, 16 DO, 24 V DC, transistor 0.5 A

  • 6ES7221-1BF30-0XB0 Siemens
    Original price $1,570.23 - Original price $1,615.00
    Original price
    $1,570.23 - $1,615.00
    $1,570.23 - $1,615.00
    Current price $1,570.23

    6ES7221-1BF30-0XB0 Siemens

    SIMATIC S7-1200, Digital input SM 1221, 8 DI, 24 V DC, Sink/Source

  • 6ES7221-1BF32-0XB0 Siemens
    Original price $300.00 - Original price $349.25
    Original price
    $349.25
    $300.00 - $349.25
    Current price $349.25

    6ES7221-1BF32-0XB0 Siemens

    SIMATIC S7-1200, Digital input SM 1221, 8 DI, 24 V DC, Sink/Source

  • 6ES7531-7PF00-0AB0 Siemens
    Sold out
    Original price $0.00 - Original price $0.00
    Original price
    $0.00
    $0.00 - $0.00
    Current price $0.00

    6ES7531-7PF00-0AB0 Siemens

    SIMATIC S7-1500, ANALOG INPUT MODULE AI 8 X U/R/RTD/TC HF, 16 BITS OF RESOLUTION, UP TO 21 BITS OF RESOLUTION WITH RTD AND TC, ACCURACY 0.1%, 8 CHA...

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  • 6ES7531-7NF00-0AB0 Siemens
    Original price $1,249.98 - Original price $1,875.00
    Original price
    $1,249.98 - $1,875.00
    $1,249.98 - $1,875.00
    Current price $1,249.98

    6ES7531-7NF00-0AB0 Siemens

    SIMATIC S7-1500, ANALOG INPUT MODULE AI 8 X U/I HF, UP TO 24 BITS OF RESOLUTION, ACCURACY 0.1%, 8 CHANNELS IN GROUPS OF 1 COMMON MODE VOLTAGE: 30V ...

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  • 6ES7526-2BF00-0AB0 Siemens
    Original price $1,292.48 - Original price $1,475.00
    Original price
    $1,475.00
    $1,292.48 - $1,475.00
    Current price $1,475.00

    6ES7526-2BF00-0AB0 Siemens

    SIMATIC S7-1500, FAILSAFE DIGITAL OUTPUT MODULE F-DQ 8X24VDC 2A PPM PROFISAFE; 35 MM WIDTH; UP TO PL E (ISO 13849-1)/ SIL3 (IEC 61508)

  • 6ES7531-7NF10-0AB0 Siemens
    Original price $549.97 - Original price $2,826.00
    Original price
    $549.97 - $2,826.00
    $549.97 - $2,826.00
    Current price $549.97

    6ES7531-7NF10-0AB0 Siemens

    SIMATIC S7-1500, Analog input module AI 8xU/I HS, 16 bit resolution, accuracy 0.3% 8 channels in groups of 8, Common mode voltage 10 V; diagnostics...

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  • 6ES7532-5HF00-0AB0 Siemens
    Original price $875.00 - Original price $1,309.13
    Original price
    $1,309.13
    $875.00 - $1,309.13
    Current price $1,309.13

    6ES7532-5HF00-0AB0 Siemens

    SIMATIC S7-1500, Analog output module AQ 8xU/I HS, 16 bit resolution, accuracy 0.3%, 8 channels in groups of 8, diagnostics, substitute value 8 cha...

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  • 6ES7532-5ND00-0AB0 Siemens
    Original price $0.00 - Original price $2,519.00
    Original price
    $2,519.00
    $0.00 - $2,519.00
    Current price $2,519.00

    6ES7532-5ND00-0AB0 Siemens

    SIMATIC S7-1500 Analog output module AQ 4xU/I HF, 16 bit resolution, accuracy 0.1%, 4 channels in groups of 1; common mode voltage: 30 V AC/60 V DC...

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  • 6ES7532-5HD00-0AB0 Siemens
    Original price $687.50 - Original price $1,249.98
    Original price
    $687.50 - $1,249.98
    $687.50 - $1,249.98
    Current price $687.50

    6ES7532-5HD00-0AB0 Siemens

    SIMATIC S7-1500, Analog output module AQ 4xU/I ST, 16 bit resolution, Accuracy 0.3 RATE. 4 channels in groups of 4, diagnostics, substitute value i...

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  • 6ES7521-7EH00-0AB0 Siemens
    Original price $0.00 - Original price $2,204.88
    Original price
    $2,204.88
    $0.00 - $2,204.88
    Current price $2,204.88

    6ES7521-7EH00-0AB0 Siemens

    SIMATIC S7-1500, DIGITAL INPUT MODULE DI 16 X 24...125V UC HF, 16 CHANNELS IN GROUPS OF 1; INPUT DELAY 0.05 ... 20MS; INPUT TYPE 3 (IEC 61131); DIA...

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  • 6ES7550-1AA00-0AB0 Siemens
    Original price $0.00 - Original price $1,322.50
    Original price
    $1,322.50
    $0.00 - $1,322.50
    Current price $1,322.50

    6ES7550-1AA00-0AB0 Siemens

    Simatic S7-1500, TM COUNT 2X24V COUNTING MODULE, 2 Channels FOR 24V INCREMENTAL Encoder OR 24V PULSES, 3DI, 2DQ PER Channel

  • 6ES7522-1BL01-0AB0 Siemens
    Original price $597.50 - Original price $812.50
    Original price
    $597.50 - $812.50
    $597.50 - $812.50
    Current price $597.50

    6ES7522-1BL01-0AB0 Siemens

    SIMATIC S7-1500, digital output module DQ 32x24 V DC/0.5 A HF; 32 channels in groups of 8; 4 A per group; Single-channel diagnostics; Substitute va...

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  • 6ES7523-1BL00-0AA0 Siemens
    Original price $472.97 - Original price $523.08
    Original price
    $523.08
    $472.97 - $523.08
    Current price $523.08

    6ES7523-1BL00-0AA0 Siemens

    SIMATIC S7-1500 digital input/output module, DI16x 24 V DC BA, 16 channels in groups of 16, input delay typ. 3.2ms Input type 3 (IEC 61131), DQ16X2...

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  • 6ES7522-1BL10-0AA0 Siemens
    Original price $747.50 - Original price $1,512.50
    Original price
    $747.50 - $1,512.50
    $747.50 - $1,512.50
    Current price $747.50

    6ES7522-1BL10-0AA0 Siemens

    SIMATIC S7-1500 Digital output module, DQ32x24 V DC/0.5A BA, 32 channels in groups of 8, 4 A per group; Delivery incl. front connector Push-in

  • 6ES7522-5HH00-0AB0 Siemens
    Original price $669.18 - Original price $812.50
    Original price
    $812.50
    $669.18 - $812.50
    Current price $812.50

    6ES7522-5HH00-0AB0 Siemens

    SIMATIC S7-1500, digital output module DQ 16x 230 V AC/2 A ST; 16 channels in groups of 2; 4 A per group; Diagnostics, substitute value: Front conn...

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  • 6ES7521-1BL00-0AB0 Siemens
    Original price $620.00 - Original price $1,260.75
    Original price
    $620.00 - $1,260.75
    $620.00 - $1,260.75
    Current price $620.00

    6ES7521-1BL00-0AB0 Siemens

    SIMATIC S7-1500, digital input module DI 32x24 V DC HF, 32 channels in groups of 16; Input delay 0.05..20 ms Input type 3 (IEC 61131); Diagnostics,...

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  • 6ES7521-1BL10-0AA0 Siemens
    Original price $626.48 - Original price $1,212.50
    Original price
    $626.48 - $1,212.50
    $626.48 - $1,212.50
    Current price $626.48

    6ES7521-1BL10-0AA0 Siemens

    SIMATIC S7-1500, Digital input module, DI 32x24 V DC BA, 32 channels in groups of 16, Input delay typ. 3.2 ms, Input type 3 (IEC 61131) incl. push-...

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