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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 251-300 of 825.
    AUTOMATION DIRECT GFS30-M1A-24-F

    AUTOMATION DIRECT

    ACUAMP

    GFS30-M1A-24-F

    ACUAMP GROUND FAULT SENSOR, FIXED CORE, 5, 10, OR 30 MA SELECTABLE TRIP POINT, RELAY, SPST-N.O., MANUAL RESET OUTPUT, 24 VAC/VDC OPERATING VOLTAGE.
    ✓ IN STOCK!
    $471.67 Buy Surplus As Low As $223.56
    $223.56
    Repair Yours $300.00
    TOSHIBA 810-ZCT-100

    TOSHIBA

    810-ZCT-100

    DISCONTINUED BY MANUFACTURER, GROUND FAULT RELAY
    ✓ IN STOCK!
    Buy Surplus As Low As $383.00
    $383.00
    EXTECH 382252

    EXTECH

    382252

    EARTH GROUND RESISTANCE TESTER KIT; MEASURING FUNCTIONS:2 AND 3 POLE; RESISTANCE MEASUREMENT RANGE:20OHM, 200OHM, 2000OHM; RESISTANCE MEASUREMENT FREQUENCY:820HZ; PRODUCT RANGE:-; SVHC:NO SV ...
    ✓ IN STOCK!
    $589.48 Buy Surplus As Low As $353.69
    $353.69
    Repair Yours $300.00
    SIEMENS 3UG4815-1AA40

    SIEMENS

    3UG4815-1AA40

    DIGITAL MONITORING RELAY, FOR IO-LINK, 3-PHASE SUPPLY, 160-690 VAC, 50/60 HZ, PHASE SEQUENCE, PHASE FAILURE, PHASE ASYMMETRY, UNDERVOLTAGE, OVERVOLTAGE, HYSTERESIS, LINE STABILIZATION, DELAY ...
    ✓ IN STOCK!
    $500.00 Buy Surplus As Low As $258.65
    $258.65
    Repair Yours $300.00
    TYCO 565-558

    TYCO

    SIMPLEXGRINNELL

    565-558

    4009 EARTH DETECT BOARD ASSEMBLY
    ✓ IN STOCK!
    $107.00 Buy Surplus As Low As $38.78
    $38.78
    Repair Yours $300.00
    AUTOMATION DIRECT AD-PR40-1C-120A

    AUTOMATION DIRECT

    AD-PR40-1C-120A

    AUTOMATIONDIRECT POWER RELAY, PANEL MOUNT, OPEN, 120 VAC COIL VOLTAGE, SPDT, (1) N.O., (1) N.C., 40A CONTACT RATING, SCREW TERMINAL(S).
    ✓ IN STOCK!
    $36.72 Buy Surplus As Low As $19.19
    $19.19
    Repair Yours $300.00
    LOVATO 31-ASF380

    LOVATO

    31-ASF380

    RELAY PHASE SEQUENCE ASF 380/415VAC DIN 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $150.00
    $150.00
    Repair Yours $300.00
    EMOTRON EL-FI-M10

    EMOTRON

    EL-FI-M10

    DISCONTINUED BY MANUFACTURER, SHAFT POWER MONITOR, 1.5AMP, 100-690VAC, 50/60HZ, REPLACEMENT: EL-FI-M20
    ✓ IN STOCK!
    Buy Surplus As Low As $1,050.00
    $1,050.00
    Repair Yours $880.00
    CROUZET DSR-12D

    CROUZET

    DSR-12D

    UNDERVOLTAGE MONITORING RELAY, DIN RAIL, SPDT 10A, 12 VDC, CAN BE REPLACED BY PN DSR110A. DIFFERENCE: 110V INPUT INSTEAD OF 12V. NEEDED: A DIFFERENT INPUT POWER IS NEEDED
    ✓ IN STOCK!
    Buy Surplus As Low As $101.35
    $101.35
    Repair Yours $300.00
    CROUZET DUR24A

    CROUZET

    DUR24A

    VOLTAGE MONITORING RELAY, DIN RAIL, SPDT 10A, 24 VAC, CAN BE REPLACED BY PN DUR110A. DIFFERENCE: 110V INPUT INSTEAD OF 24V. NEEDED: A DIFFERENT INPUT POWER IS NEEDED
    ✓ IN STOCK!
    $169.00 Buy New $169.00
    $112.00
    Repair Yours $300.00
    EATON CORPORATION EASY821-DC-TC

    EATON CORPORATION

    CUTLER HAMMER

    EASY821-DC-TC

    EASY PROGRAMMABLE RELAY, 800 SERIES, 24 V DC, 12 DIGITAL INPUTS, 8 TRANSISTOR OUTPUTS, INCLUDES CLOCK AND DISPLAY, OPTIONAL 4 ANALOG INPUTS
    ✓ IN STOCK!
    Buy Surplus As Low As $555.65
    $555.65
    Repair Yours $553.00
    PEPPERL & FUCHS KHU8-DW-1.D

    PEPPERL & FUCHS

    KHU8-DW-1.D

    DISCONTINUED BY MANUFACTURER, ROTATION SPEED MONITOR, 5KHZ, 1 PRE-SELECT VALUE WITH RELAY OUTPUT AND LED INDICATOR, MULTI-RANGE POWER PACK, 2-, 3-, 4-WIRE AND NAMUR SENSORS AS WELL AS ROTARY ...
    ✓ IN STOCK!
    Buy Surplus As Low As $347.46
    $347.46
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730794R3300

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR730794R3300

    (PRICE/EA) CM-PVS.41S THREE-PHASE MON. , 1SVR730794R3300
    ✓ IN STOCK!
    $400.00 Buy Surplus As Low As $203.00
    $203.00
    Repair Yours $300.00
    TIME MARK CORP D263

    TIME MARK CORP

    D263

    POWER MONITOR, 3-PHASE, 575 VAC 60 HZ NOMINAL, 450-575 VAC ADJUST RANGE, 10/15 AMP
    ✓ IN STOCK!
    $185.00 Buy New $185.00
    $111.00
    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
    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
    DOLD IK9065.11*

    DOLD

    IK9065.11*

    MEASURING RELAYS - UNDERLOAD - 1 PHASE / 3 PHASE AUTO RESET
    ✓ IN STOCK!
    $141.78 Buy Surplus As Low As $34.50
    $34.50
    ASEA BROWN BOVERI 1SVR730841R0300

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR730841R0300

    (PRICE/EA) CM-SRS.12S CURRENT MON. RELAY , 1SVR730841R0300
    ✓ IN STOCK!
    $396.02 Buy Surplus As Low As $237.61
    $237.61
    Repair Yours $300.00
    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
    TIME MARK CORP 273-5-120

    TIME MARK CORP

    273-5-120

    CURRENT-MONITOR, OVER/UNDER CURRENT MONITOR, SINGLE PHASE, 8 PIN, SPDT, 1/5 AMP, 0.5 - 5A, 120VAC, PLUG-IN TYPE
    ✓ IN STOCK!
    $155.54 Buy New $155.54
    $72.15
    Repair Yours $300.00
    TIME MARK CORP C2652

    TIME MARK CORP

    C2652

    3-PHASE-MONITORS,480VAC, SIZE 3.5IN X 4.5IN X 4.8IN
    ✓ IN STOCK!
    $288.00 Buy New $288.00
    $140.00
    Repair Yours $300.00
    OMRON G3NA-440B 5-24DC

    OMRON

    G3NA-440B 5-24DC

    DISCONTINUED BY MANUFACTURER, SOLID-STATE RELAY, SURFACE MOUNTING, 1-POLE, 40 AMP, 528 VAC MAX
    ✓ IN STOCK!
    Buy Surplus As Low As $47.34
    $47.34
    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
    R-K ELECTRONICS TVM-400-20-2002

    R-K ELECTRONICS

    TVM-400-20-2002

    UNDER & OVER VOLTAGE 3 PHASE VOLTAGE MONITOR, UNDERVOLTAGE - OVER VOLTAGE - PHASE LOSS - PHASE ROTATION, ADJUSTABLE 410 TO 490VAC 3Ø, 10PCT, 2 SECOND PICK-UP & DROP-OUT DELAY, BASE KEY POSIT ...
    ✓ IN STOCK!
    $134.00 Buy New $134.00
    $90.00
    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
    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
    TIME MARK CORP A257BM

    TIME MARK CORP

    A257BM

    3-PHASE-MONITORS,480VAC, SPDT, SIZE 3.52IN X 2.44IN X 1.75IN
    ✓ IN STOCK!
    $139.74 Buy New $139.74
    $73.87
    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
    GENERAL ELECTRIC IC2820D300B15

    GENERAL ELECTRIC

    IC2820D300B15

    DISCONTINUED BY MANUFACTURER, RELAY FIELD LOSS, 8 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $374.51
    $374.51
    Repair Yours $300.00
    INVENSYS AE-504

    INVENSYS

    BARBER COLMAN

    AE-504

    PARALLELING RELAY, ACTUATOR OR PANEL MOUNT, DPDT (SERIES 90)
    ✓ IN STOCK!
    $337.25 Buy Surplus As Low As $202.35
    $202.35
    Repair Yours $300.00
    SCHWEITZER ENGINEERING 0501003X5625XB

    SCHWEITZER ENGINEERING

    0501003X5625XB

    RELAY DUAL OVERCURRENT SEL-501 5PH 125V 5.5W 60HZ
    ✓ IN STOCK!
    $706.82 Buy Surplus As Low As $589.02
    $589.02
    Repair Yours $391.11
    WESTINGHOUSE BE1-851-G5-N1H0N

    WESTINGHOUSE

    BE1-851-G5-N1H0N

    DISCONTINUED BY MANUFACTURER, OVERCURRENT RELAY, BE1-851 SERIES, 48-125 VAC/VDC, 5 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $876.88
    $876.88
    Repair Yours $657.06
    GENERAL ELECTRIC 12NGV13B25A

    GENERAL ELECTRIC

    12NGV13B25A

    RELAY UNDERVOLTAGE .2AMP 120VAC
    ✓ IN STOCK!
    $1,484.00 Buy Surplus As Low As $724.51
    $724.51
    Repair Yours $601.34
    FRAKO EMR-1100

    FRAKO

    EMR-1100

    DISCONTINUED BY MANUFACTURER, REACTIVE POWER CONTROL RELAY, SINGLE PHASE, 220-240 VAC OPERATING VOLTAGE, 100-690 VAC MEASUREMENT VOLTAGE, 50/60 HZ POWER FREQUENCY, 20 MA
    ✓ IN STOCK!
    Buy Surplus As Low As $349.00
    $349.00
    Repair Yours $300.00
    GENERAL ELECTRIC 12HAA15E1

    GENERAL ELECTRIC

    12HAA15E1

    DISCONTINUED BY MANUFACTURER, AUXILIARY CURRENT RELAY, DC 0.2/2.0AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $463.73
    $463.73
    Repair Yours $450.18
    SIEMENS 3TX7015-1BB02

    SIEMENS

    3TX7015-1BB02

    DISCONTINUED BY MANUFACTURER, INPUT COUPLER, W/ PLUG-IN RELAY, 1CO CONTACT, SPRING-TYPE TERMINAL, 24V AC/DC, 50HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $60.51
    $60.51
    SIEMENS 5TT3401

    SIEMENS

    5TT3401

    VOLTAGE RELAY T5570 AC 230/400V 1CO 0.85/0.95 WITH TRANSPARENT CAP
    ✓ IN STOCK!
    $106.00 Buy Surplus As Low As $81.00
    $81.00
    Repair Yours $300.00
    SIEMENS 5TT3402

    SIEMENS

    5TT3402

    RELAY 230/400V 2W AVAILABLE, SURPLUS, NEVER USED, 2 YEAR WARRANTY
    ✓ IN STOCK!
    $173.74 Buy Surplus As Low As $63.51
    $63.51
    Repair Yours $300.00
    ASEA BROWN BOVERI 10-029-00

    ASEA BROWN BOVERI

    JOKAB SAFETY

    10-029-00

    DISCONTINUED BY MANUFACTURER, SAFETY RELAY, RT9, 24DC
    ✓ IN STOCK!
    Buy Surplus As Low As $332.85
    $332.85
    Repair Yours $323.70
    GENERAL ELECTRIC 12CEY52A1D

    GENERAL ELECTRIC

    12CEY52A1D

    DISCONTINUED BY MANUFACTURER, DISTANCE RELAY, 120 V, 5 AMP, 60 CYCLE, 1.3 OHM
    ✓ IN STOCK!
    Buy Surplus As Low As $1,593.64
    $1,593.64
    Repair Yours $1,489.92
    GENERAL ELECTRIC 12SBC23B1D

    GENERAL ELECTRIC

    12SBC23B1D

    DISCONTINUED BY MANUFACTURER, STATIC BREAKER BACKUP RELAY, SBC TYPE, 125 VDC, 10 AMPS, 60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $2,149.29
    $2,149.29
    Repair Yours $1,783.91
    WESTINGHOUSE 774B470A12

    WESTINGHOUSE

    774B470A12

    DISCONTINUED BY MANUFACTURER, RELAY AUXILIARY 125VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $442.58
    $442.58
    Repair Yours $367.34
    SIEMENS 3TH2040-0BW4

    SIEMENS

    3TH2040-0BW4

    DISCONTINUED BY MANUFACTURER, CONTACTOR RELAY, DC OPERATION, 4 NORMALLY OPEN, 48 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $184.78
    $184.78
    Repair Yours $300.00
    ASEA BROWN BOVERI FCX-103B/1

    ASEA BROWN BOVERI

    BBC METRAWATT

    FCX-103B/1

    RELAY FREQUENCY 110/110/200/220V 65/391HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $810.00
    $810.00
    Repair Yours $680.00
    WESTINGHOUSE BE1-51-K1E-Z1O-A1N0F

    WESTINGHOUSE

    BE1-51-K1E-Z1O-A1N0F

    RELAY ELECTRIC GROUND FAULT OVERVOLTAGE PROTECTIVE
    ✓ IN STOCK!
    $1,431.00 Buy Surplus As Low As $793.15
    $793.15
    Repair Yours $592.49
    AUTOMATION DIRECT AD-PR40-2C-240A

    AUTOMATION DIRECT

    AD-PR40-2C-240A

    AUTOMATIONDIRECT POWER RELAY, PANEL MOUNT, OPEN, 240 VAC COIL VOLTAGE, DPDT, 2 N.O., 2 N.C., 40A CONTACT RATING, SCREW TERMINAL(S).
    ✓ IN STOCK!
    $45.45 Buy Surplus As Low As $35.35
    $35.35
    Repair Yours $300.00
    WESTINGHOUSE 5264C09H02

    WESTINGHOUSE

    5264C09H02

    DISCONTINUED BY MANUFACTURER, GROUNDGARD RELAY, 10 AMP, 250 VAC, 50/60 HZ, 125 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $883.38
    $883.38
    Repair Yours $689.21
    TIME MARK CORP A2644

    TIME MARK CORP

    A2644

    CURRENT SENSOR, 3-PHASE MONITOR, 10A,120VAC, SIZE 6.06IN X 3.88IN X 2.52IN
    ✓ IN STOCK!
    $220.00 Buy New $220.00
    $124.08
    Repair Yours $300.00
    CARLO GAVAZZI SM125230500

    CARLO GAVAZZI

    SM125230500

    DISCONTINUED BY MANUFACTURER, VOLTAGE MONITORING RELAY, 230 VAC SUPPLY, 50-500 VAC/DC MEASURING RANGE, LED INDICATION
    ✓ IN STOCK!
    Buy Surplus As Low As $122.21
    $122.21
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730840R0300

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR730840R0300

    (PRICE/EA) CM-SRS.12S CURRENT MON. RELAY , 1SVR730840R0300
    ✓ IN STOCK!
    $536.46 Buy Surplus As Low As $407.71
    $407.71
    Repair Yours $300.00
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