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    Transmission & Distribution Relay Solutions

    Ensure reliable electrical protection with advanced relays and monitoring devices, safeguarding power systems and equipment integrity.

    Safeguard your power distribution networks with our comprehensive range of transmission distribution relays. Our comprehensive range features ground fault relays, phase/voltage loss relays, ground fault sensors, voltage/phase monitors, and permissive relays for all your transmission distribution relay needs. Whether you're safeguarding power distribution systems, monitoring critical electrical parameters, or ensuring equipment protection, our Transmission Distribution Relays provide the advanced functionality and reliability needed for optimal performance and safety in industrial environments. Shop now for cutting-edge transmission distribution relays to enhance your power system's reliability and safety.

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    Results 301-350 of 843.
    SIEMENS 3UG4632-1AA30

    SIEMENS

    3UG4632-1AA30

    VOLTAGE MONITORING RELAY, DIGITAL, SPDT, 1 PHASE, 1 POLE, 10-600 VAC/DC, 50/60 HZ, SCREW TYPE TERMINAL, DIN RAIL MOUNT, -25 TO +60 DEGREES C , 3UG4632-1AA30
    ✓ IN STOCK!
    $384.00 Buy Surplus As Low As $292.00
    $292.00
    Repair Yours $300.00
    SIEMENS 3TX7014-1BF02

    SIEMENS

    3TX7014-1BF02

    INPUT COUPLER, WITH PLUG-IN RELAY, 1 CHANGE-OVER CONTACT, HARD GOLD-PLATED, SCREW TERMINAL, 230V AC/DC, ENCLOSURE WIDTH 6.2 MM
    ✓ IN STOCK!
    $68.00 Buy Surplus As Low As $30.71
    $30.71
    SIEMENS 3UF7100-1AA00-0

    SIEMENS

    3UF7100-1AA00-0

    SIMOCODE PRO CUR MEAS. MODULE,0.3-3A, CONTROLS - SIMOCODE 3UF50 OVRLD, CONTROL PRODUCTS , 3UF7100-1AA00-0 , 3UF7100-1AA00-0
    ✓ IN STOCK!
    $374.00 Buy Surplus As Low As $147.94
    $147.94
    Repair Yours $300.00
    SIEMENS 3UG3532-1AL20

    SIEMENS

    3UG3532-1AL20

    DISCONTINUED BY MANUFACTURER, SINCE - 01/10/2007, VOLTAGE CONTROL RELAY, SINGLE PHASE, 230VAC (50/60 HZ), LED STATUS INDICATORS, SCREW CLAMP TERMINALS, DIN-RAIL MOUNTED
    ✓ IN STOCK!
    Buy Surplus As Low As $101.49
    $101.49
    Repair Yours $300.00
    SIEMENS 3UF7111-1AA00-0

    SIEMENS

    FURNAS ELECTRIC CO

    3UF7111-1AA00-0

    DISCONTINUED BY MANUFACTURER 12/01/2021, CURRENT/VOLTAGE MEASURING MODULE, SIMOCODE PRO, 2.4-25 AMP, DETECTION UP TO 690V, OVERALL WIDTH 45 MM, STRAIGHT-THROUGH TRANSFORMER, REPLACED BY 3UF7 ...
    ✓ IN STOCK!
    Buy Surplus As Low As $381.33
    $381.33
    Repair Yours $316.51
    CROUZET DUR-110A

    CROUZET

    DUR-110A

    SYRELEC, VOLTAGE MONITORING RELAY, DIN RAIL, SPDT 10A, 110 VAC
    ✓ IN STOCK!
    $184.00 Buy New $184.00
    $81.77
    Repair Yours Contact Us
    SIEMENS 3RH1122-1BM40

    SIEMENS

    FURNAS ELECTRIC CO

    3RH1122-1BM40

    09/30/2021 CONTACTOR RELAY, 220 VDC, 2NO/2NC, SCREW TERMINALS, DIN RAIL MOUNTING, REPLACED BY 3RH2122-1BM40
    ✓ IN STOCK!
    $204.07 Buy Surplus As Low As $122.44
    $122.44
    SIEMENS 3RH1244-1BB40

    SIEMENS

    FURNAS ELECTRIC CO

    3RH1244-1BB40

    DISCONTINUED BY MANUFACTURER, CONTROL RELAY, SCREW TERMINALS, 4NO, 4NC, 24VDC COIL
    ✓ IN STOCK!
    Buy Surplus As Low As $90.00
    $90.00
    Repair Yours $300.00
    SIEMENS 3TX7014-1BF00

    SIEMENS

    FURNAS ELECTRIC CO

    3TX7014-1BF00

    DISCONTINUED BY MANUFACTURER, OUTPUT COUPLER WITH PLUG-IN RELAY, 1CO CONTACT, SCREW TERMINAL, 230V AC/DC, 5-50HZ
    ✓ IN STOCK!
    $60.00 Buy Surplus As Low As $33.53
    $33.53
    Repair Yours $300.00
    TIME MARK CORP EX263

    TIME MARK CORP

    EX263

    3-PHASE-MONITORS,380VAC,50 HZ, SIZE 6.06IN X 3.88IN X 2.08IN
    ✓ IN STOCK!
    $185.00 Buy New $185.00
    $40.49
    Repair Yours $300.00
    TIME MARK CORP EX257B

    TIME MARK CORP

    EX257B

    3-PHASE MONITOR, NOMINAL AC VOLTAGE (PHASE TO PHASE) 380 VAC, YELLOW CASE, 300-400 VAC ADJUSTMENT RANGE, 50 HZ FREQUENCY, 3.75W POWER CONSUMPTION, 8 PIN
    ✓ IN STOCK!
    $116.30 Buy New $116.30
    $70.00
    Repair Yours $300.00
    TIME MARK CORP 421

    TIME MARK CORP

    421

    SPECIAL-CONTROL, OVER/UNDER MOTOR LOAD MONITOR, 100-250VAC, SIZE 3.88IN X 6.06IN X 2.63IN
    ✓ IN STOCK!
    $404.00 Buy New $404.00
    $195.94
    Repair Yours $300.00
    SIEMENS 3UG4625-1CW30

    SIEMENS

    3UG4625-1CW30

    MONITORING RELAY, DIGITAL, FOR RESIDUAL CURRENT MONITORING, 0.03-4 AMP, 24-240 VAC/DC, 50/60 HZ, 2 CHANGE OVER CONTACTS, SCREW TYPE TERMINAL, DIN RAIL MOUNT
    ✓ IN STOCK!
    $364.00 Buy Surplus As Low As $148.44
    $148.44
    Repair Yours $200.00
    INGERSOLL RAND RLY1703

    INGERSOLL RAND

    TRANE

    RLY1703

    24V 8A SPNO GP RELAY
    ✓ IN STOCK!
    $35.27 Buy Surplus As Low As $21.16
    $21.16
    Repair Yours $300.00
    INGERSOLL RAND RLY1237

    INGERSOLL RAND

    TRANE

    RLY1237

    TRANE RELAYS, SWITCH AND LIMIT CONTROLS, 12/8A @125/250V, 24 VAC COIL
    ✓ IN STOCK!
    $154.41 Buy Surplus As Low As $82.49
    $82.49
    Repair Yours $300.00
    INGERSOLL RAND RLY0983

    INGERSOLL RAND

    TRANE

    RLY0983

    PILOT CONTROL RELAY, 120 VOLT AC, 50/60 HZ, 24 VOLT COIL, 6 BLADE STYLE CONNECTIONS
    ✓ IN STOCK!
    $62.25 Buy Surplus As Low As $27.77
    $27.77
    Repair Yours $300.00
    ASEA BROWN BOVERI DDA803A-100/0.5

    ASEA BROWN BOVERI

    DDA803A-100/0.5

    RESIDUAL CURRENT DEVICE BLOCK, TYPE A, 400/415/690 VAC RATED VOLTAGE, RATED CURRENT: 100A, 50/60HZ, INSTANTANEOUS OPERATING CHARACTERISTIC
    ✓ IN STOCK!
    $1,642.10 Buy Surplus As Low As $822.44
    $822.44
    Repair Yours $608.22
    ASEA BROWN BOVERI 1SVR730774R1300

    ASEA BROWN BOVERI

    1SVR730774R1300

    (PRICE/EA) CM-PAS.31S THREE-PHASE MON. , 1SVR730774R1300
    ✓ IN STOCK!
    $380.00 Buy Surplus As Low As $133.27
    $133.27
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730824R9300

    ASEA BROWN BOVERI

    1SVR730824R9300

    PHASE MONITOR RELAY, PHASE FAILURE DETECTION, 3 PHASE, SPDT, DIN RAIL MOUNT, 4 AMP, SCREW TERMINATION, 200-500 VAC, ROHS COMPLIANT
    ✓ IN STOCK!
    $192.00 Buy Surplus As Low As $107.00
    $107.00
    Repair Yours Contact Us
    ASEA BROWN BOVERI 1SVR730841R1400

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR730841R1400

    (PRICE/EA) CM-SRS.21S CURRENT MON. RELAY , 1SVR730841R1400
    ✓ IN STOCK!
    $347.00 Buy Surplus As Low As $163.00
    $163.00
    Repair Yours $300.00
    WIELAND SAP-1002

    WIELAND

    SCHLEICHER

    SAP-1002

    PHASE FAILURE MONITORING RELAY, 380-415VAC, 3AC, 50/60HZ
    ✓ IN STOCK!
    $133.00 Buy Surplus As Low As $67.00
    $67.00
    Repair Yours $300.00
    EATON CORPORATION PFR-WMA-105

    EATON CORPORATION

    MOELLER ELECTRIC

    PFR-WMA-105

    MOELLER PFR-WMA-105 MAGNETIC SCREEN
    ✓ IN STOCK!
    $354.00 Buy Surplus As Low As $270.00
    $270.00
    Repair Yours $200.00
    ASEA BROWN BOVERI 1SVR750488R8300

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR750488R8300

    3-PHASE MULTI-FUNCTIONAL MONITORING RELAY WITH SELECTABLE TRIP DELAY, 450 TO 720 VAC, 2 TO 4 A, 2CO-SPDT CONTACT, 450 TO 720 VAC V COIL
    ✓ IN STOCK!
    $565.00 Buy Surplus As Low As $300.78
    $300.78
    Repair Yours $300.00
    MOTOR PROTECTION ELEC. INC 002-480-123

    MOTOR PROTECTION ELEC. INC

    002-480-123

    DISCONTINUED BY MANUFACTURER, PHASE MONITOR , SUGGESTED REPLACEMENT IS 001-DVM-DR
    ✓ IN STOCK!
    Buy Surplus As Low As $88.00
    $88.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR550824R9100

    ASEA BROWN BOVERI

    1SVR550824R9100

    PHASE MONITORING RELAY, SINGLE FUNCTION, CM-PFE SERIES, 3 PHASE,4 AMP, 28-440 VAC, 50/60 HZ, 1 C/O (SPDT) OUTPUT, SCREW TYPE TERMINALS, -20 TO +85 DEGREES C, IP20/50, (CM-PFE)
    ✓ IN STOCK!
    $142.00 Buy Surplus As Low As $56.40
    $56.40
    Repair Yours $300.00
    ASEA BROWN BOVERI CM-ESS.1S

    ASEA BROWN BOVERI

    CM-ESS.1S

    VOLTAGE MONITORING RELAY, SPDT, 4 AMP, 250 VAC, 750 MW, 81-12 AWG, SCREW TYPE TERMINALS, DIN RAIL MOUNT, -40 TO +85 DEGREE C, (1SVR730830R0300)
    ✓ IN STOCK!
    $708.35 Buy Surplus As Low As $425.01
    $425.01
    Repair Yours $300.00
    KEARNEY NATIONAL INC 22.017-04-600-A/4H

    KEARNEY NATIONAL INC

    22.017-04-600-A/4H

    DISCONTINUED BY MANUFACTURER, FAULT INDICATOR CRAB, 600AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $13.79
    $13.79
    TELE CONTROLS G2PM400VSY20 24-240VAC/DC

    TELE CONTROLS

    G2PM400VSY20 24-240VAC/DC

    VOLTAGE MONITORING RELAY, GAMMA SERIES, DPDT, 3 AMP, ZOOM VOLTAGE 24 TO 240 VAC/DC, SCREW TERMINALS, DIN RAIL MOUNT
    ✓ IN STOCK!
    $298.70 Buy New $298.70
    $221.00
    Repair Yours $200.00
    GENERAL ELECTRIC 350-E-P5-G5-H-E-S-N-N-1E-D-N

    GENERAL ELECTRIC

    MULTILIN

    350-E-P5-G5-H-E-S-N-N-1E-D-N

    DISCONTINUED BY MANUFACTURER, FEEDER PROTECTION RELAY, PHASE CURRENTS - 5 AMP / 3 PHASE, GROUND CURRENTS - 5 AMP STANDARD, 110-250 V DC, 110-230 V AC, 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $1,608.00
    $1,608.00
    Repair Yours $1,334.64
    ASEA BROWN BOVERI 69326-2R

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    69326-2R

    RELAY, POWER TYPE, 24VDC COIL
    ✓ IN STOCK!
    Buy Surplus As Low As $19.80
    $19.80
    ASEA BROWN BOVERI 419904051AB

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    419904051AB

    BRUSH EXTRUDER DUTY C
    ✓ IN STOCK!
    $86.89 Buy New $86.89
    $55.55
    Repair Yours $300.00
    MARSH BELLOFRAM VBA-208-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    VBA-208-ALA

    SINGLE PHASE VOLTAGE BAND MONITOR/RELAYS
    ✓ IN STOCK!
    $554.60 Buy New $554.60
    $421.50
    Repair Yours $300.00
    MARSH BELLOFRAM VBA-208-AFN

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    VBA-208-AFN

    SINGLE PHASE VOLTAGE BAND MONITOR/RELAYS
    ✓ IN STOCK!
    $901.67 Buy New $901.67
    $541.00
    Repair Yours $327.00
    MARSH BELLOFRAM UOA-110-DKA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-110-DKA

    SINGLE PHASE UNDER VOLTAGE MONITOR/RELAY, 110 VDC, 92-130 VDC TRIP RANGE, 0.05 SEC TO 0.5 SEC, DPDT (2 FORM C), 5 A @ 240 VAC
    ✓ IN STOCK!
    $368.95 Buy New $368.95
    $221.37
    Repair Yours $300.00
    MARSH BELLOFRAM SUA-230-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SUA-230-ALA

    PHASE MONITOR RELAY, SPDT, 10 AMP AT 240 VAC, 190-270 V ADJUSTABLE, LOCK SHAFT, OCTAL PLUG IN
    ✓ IN STOCK!
    $339.00 Buy New $339.00
    $164.75
    Repair Yours $300.00
    MARSH BELLOFRAM PRA-100-AFA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PRA-100-AFA

    PHASE SEQUENCE MONITOR, 208-480VAC SUPPLY, CONTACTS 10A AT 240VAC, 8PIN SOCKET
    ✓ IN STOCK!
    $309.00 Buy New $309.00
    $196.34
    Repair Yours $300.00
    MARSH BELLOFRAM SLM-440-ASE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLM-440-ASE

    PHASE MONITOR, TIME DELAY, 440-490 VAC, 50/60 HZ, 3 AMP
    ✓ IN STOCK!
    $737.00 Buy New $737.00
    $487.00
    Repair Yours $300.00
    MARSH BELLOFRAM SLD-380-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLD-380-ALE

    PHASE MONITOR RELAY,
    ✓ IN STOCK!
    $646.62 Buy New $646.62
    $408.88
    Repair Yours $300.00
    MARSH BELLOFRAM SLA-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-440-ALE

    PHASE MONITORING/RELAY, PHASE SEQUENCE/LOSS MONITOR, 430-480 VAC, 3 PHASE SUPPLY
    ✓ IN STOCK!
    $372.00 Buy New $372.00
    $233.26
    Repair Yours $300.00
    MARSH BELLOFRAM SLA-440-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-440-AFE

    PHASE MONITOR/RELAY
    ✓ IN STOCK!
    $560.00 Buy New $560.00
    $370.00
    Repair Yours $300.00
    MARSH BELLOFRAM SLA-230-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-230-ASA

    PHASE MONITOR, 190-270 VAC, 50/60 HZ, CONTACTS 10 AMP @ 240 VAC, RESISTIVE 345 VAC
    ✓ IN STOCK!
    $155.00 Buy New $155.00
    $97.59
    Repair Yours $300.00
    MARSH BELLOFRAM SLA-230-ALER

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-230-ALER

    PHASE MONITOR/RELAY, PHASE SEQUENCE/LOSS MONITOR, 230V, LOCK SHAFT ADJ, SURFACE MOUNT, MANUAL RESET
    ✓ IN STOCK!
    $793.50 Buy New $793.50
    $471.43
    Repair Yours $381.00
    MARSH BELLOFRAM CMU-24-DSA-1

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMU-24-DSA-1

    OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMU MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 24 V AC/DC, 50/60 HZ, PLUG-IN ENCLOSURE, CURRENT TRIP POINTS - 0.2 ...
    ✓ IN STOCK!
    $429.00 Buy New $429.00
    $327.00
    Repair Yours $300.00
    MARSH BELLOFRAM CMO-120-ASA-1

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMO-120-ASA-1

    OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMO MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 120 V AC/DC, 50/60 HZ, PLUG-IN ENCLOSURE, CURRENT TRIP POINTS - 0. ...
    ✓ IN STOCK!
    $757.50 Buy New $757.50
    $261.47
    Repair Yours $300.00
    TOTALINE P283-0293

    TOTALINE

    P283-0293

    FAN RELAY 24V-COIL SPDT GENERAL PURPOSE
    ✓ IN STOCK!
    $16.69 Buy Surplus As Low As $13.91
    $13.91
    Repair Yours $300.00
    R-K ELECTRONICS PRRO-300

    R-K ELECTRONICS

    PRRO-300

    PHASE LOSS & PHASE REVERSAL RELAY, 380 TO 415VAC 3Ø, 50/60 HZ, SPDT 240VAC CONTACTS, SCREW TERMINALS, SURFACE MOUNTING
    ✓ IN STOCK!
    $290.00 Buy New $290.00
    $175.20
    Repair Yours $300.00
    R-K ELECTRONICS MVP-A1C

    R-K ELECTRONICS

    MVP-A1C

    MULTI-RANGE 3 PHASE VOLTAGE MONITOR (200 TO 480VAC, 3Ø), SELF-POWERED, 8-PIN BASE, SPDT, CONTACTS, SOCKET & HOLDDOWN INCLUDED
    ✓ IN STOCK!
    $286.76 Buy New $286.76
    $161.93
    Repair Yours $200.00
    WESTINGHOUSE 290B481A09

    WESTINGHOUSE

    290B481A09

    DISCONTINUED BY MANUFACTURER, RELAY, 5 AMP, 120V, 60HZ, 125VDC, TYPE KLF
    ✓ IN STOCK!
    Buy Surplus As Low As $880.93
    $880.93
    Repair Yours $747.00
    SCHWEITZER ENGINEERING SEL321-321124256HNB554

    SCHWEITZER ENGINEERING

    SEL321-321124256HNB554

    PHASE AND GROUND DISTANCE RELAY, DIRECTIONAL OVERCURRENT RELAY, SEL-321, FAULT LOCATOR, 125 VDC LOGIC INPUT, 5 AMP, 25W MAX, 85-264 VAC / 85-350 VDC POWER SUPPLY, 50/60 HZ, ABC ROTATION
    ✓ IN STOCK!
    $3,661.45 Buy Surplus As Low As $1,977.18
    $1,977.18
    Repair Yours $1,805.35
    ASEA BROWN BOVERI SPAJ 135 C-AA

    ASEA BROWN BOVERI

    ABB ROBOTICS

    SPAJ 135 C-AA

    DISCONTINUED BY MANUFACTURER, COMBINED OVERCURRENT AND EARTH-FAULT RELAY, 80...265 VAC, 50/60 HZ, SCREW TERMINAL
    ✓ IN STOCK!
    Buy Surplus As Low As $1,064.00
    $1,064.00
    Repair Yours $600.00
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