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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 693.
    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 $330.00
    $330.00
    Repair Yours $274.00
    ASEA BROWN BOVERI 1SVR730794R3300

    ASEA BROWN BOVERI

    1SVR730794R3300

    (PRICE/EA) CM-PVS.41S THREE-PHASE MON.
    ✓ IN STOCK!
    $364.00 Buy Surplus As Low As $203.00
    $203.00
    Repair Yours $200.00
    ASEA BROWN BOVERI 1SVR750488R8300

    ASEA BROWN BOVERI

    1SVR750488R8300

    (PRICE/EA) CM-MPN.62S THREE-PHASE MON.
    ✓ IN STOCK!
    $513.00 Buy Surplus As Low As $255.00
    $255.00
    Repair Yours $212.00
    EATON CORPORATION PFR-WMA-105

    EATON CORPORATION

    MOELLER ELECTRIC

    PFR-WMA-105

    MOELLER PFR-WMA-105 MAGNETIC SCREEN
    ✓ IN STOCK!
    $255.00 Buy Surplus As Low As $194.00
    $194.00
    Repair Yours $200.00
    GENERAL ELECTRIC MCRC040ATC

    GENERAL ELECTRIC

    MCRC040ATC

    MCRC040ATC GE RELAY 4NO 16A ITH 32V DC COIL
    $45.32 Buy Surplus As Low As $29.32
    $29.32
    DOLD IK9065.11*

    DOLD

    IK9065.11*

    MEASURING RELAYS - UNDERLOAD - 1 PHASE / 3 PHASE AUTO RESET
    ✓ IN STOCK!
    $141.29 Buy Surplus As Low As $72.51
    $72.51
    ASEA BROWN BOVERI 1SVR730840R0300

    ASEA BROWN BOVERI

    1SVR730840R0300

    (PRICE/EA) CM-SRS.12S CURRENT MON. RELAY
    ✓ IN STOCK!
    $339.00 Buy Surplus As Low As $258.00
    $258.00
    Repair Yours $200.00
    ASEA BROWN BOVERI 1SVR730841R1500

    ASEA BROWN BOVERI

    1SVR730841R1500

    RELAY, CURRENT MONITORING, CM-SRS.22S
    ✓ IN STOCK!
    $315.00 Buy Surplus As Low As $240.00
    $240.00
    Repair Yours $200.00
    ASEA BROWN BOVERI 1SVR730794R1300

    ASEA BROWN BOVERI

    1SVR730794R1300

    (PRICE/EA) CM-PVS.31S THREE-PHASE MON.
    $364.00 Buy Surplus As Low As $191.00
    $191.00
    Repair Yours $200.00
    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!
    $175.00 Buy Surplus As Low As $107.00
    $107.00
    Repair Yours $200.00
    ASEA BROWN BOVERI 1SVR730774R1300

    ASEA BROWN BOVERI

    1SVR730774R1300

    (PRICE/EA) CM-PAS.31S THREE-PHASE MON.
    ✓ IN STOCK!
    $345.00 Buy Surplus As Low As $207.00
    $207.00
    Repair Yours $200.00
    INGERSOLL RAND RLY1040

    INGERSOLL RAND

    TRANE

    RLY1040

    24V SPDT RELAY
    $26.00 Buy Surplus As Low As $16.00
    $16.00
    Repair Yours $200.00
    INGERSOLL RAND RLY1769

    INGERSOLL RAND

    TRANE

    RLY1769

    3PDT TRICKLE CRKT RELAY
    $65.00 Buy Surplus As Low As $39.00
    $39.00
    Repair Yours $200.00
    INGERSOLL RAND RLY3148

    INGERSOLL RAND

    TRANE

    RLY3148

    383V 50A START RELAY
    $46.00 Buy Surplus As Low As $28.00
    $28.00
    Repair Yours $200.00
    INGERSOLL RAND RLY2536

    INGERSOLL RAND

    TRANE

    RLY2536

    24V SPST N/O 56OHM RELAY
    $102.00 Buy Surplus As Low As $62.00
    $62.00
    Repair Yours $200.00
    INGERSOLL RAND RLY3211

    INGERSOLL RAND

    TRANE

    RLY3211

    240 V, 50A START RELAY
    $61.00 Buy Surplus As Low As $37.00
    $37.00
    Repair Yours $200.00
    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!
    $280.00 Buy Surplus As Low As $168.00
    $168.00
    Repair Yours $200.00
    TIME MARK CORP 274-5-240-M

    TIME MARK CORP

    274-5-240-M

    CURRENT-MONITORS, 3-PHASE OVER CURRENT MONITOR, 1 - 5A, 240VAC, SIZE 6.06IN X 3.88IN X 2.08IN
    ✓ IN STOCK!
    $250.00 Buy New $250.00
    $150.00
    Repair Yours $200.00
    BENDER UG-143-P

    BENDER

    UG-143-P

    DISCONTINUED BY MANUFACTURER, EARTH FAULT RELAY, 5 AMP, 250 VAC, 24 VDC, 25 K OHM
    ✓ IN STOCK!
    Buy Surplus As Low As $90.00
    $90.00
    INGERSOLL RAND RLY3369

    INGERSOLL RAND

    TRANE

    RLY3369

    START RELAY, 50A COIL,
    $73.00 Buy Surplus As Low As $44.00
    $44.00
    Repair Yours $200.00
    INGERSOLL RAND RLY3697

    INGERSOLL RAND

    TRANE

    RLY3697

    35A SPST START RELAY
    $75.00 Buy Surplus As Low As $45.00
    $45.00
    Repair Yours $200.00
    GENERAL ELECTRIC 704169

    GENERAL ELECTRIC

    704169

    DISCONTINUED BY MANUFACTURER, DIFERENCIAL RD5 220V 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $630.00
    $630.00
    Repair Yours $540.00
    EATON CORPORATION D65VMLS480C

    EATON CORPORATION

    CUTLER HAMMER

    D65VMLS480C

    TRANSMISSION RELAY, 190-500V, SURFACE MOUNT, UNIVERSAL
    ✓ IN STOCK!
    $1,407.00 Buy Surplus As Low As $1,070.00
    $1,070.00
    Repair Yours $702.00
    SCHNEIDER ELECTRIC RM35UB3N30

    SCHNEIDER ELECTRIC

    SQUARE D

    RM35UB3N30

    VOLTAGE CONTROL RELAY, DPDT, 114V-329V; PRODUCT RANGE:ZELIO RM35UB3 SERIES; CONTACT CONFIGURATION:DPDT; CONTACT CURRENT:5A; RELAY MOUNTING:DIN RAIL; RELAY TERMINALS:SCREW; SWITCHING VOLTAGE ...
    ✓ IN STOCK!
    $280.00 Buy Surplus As Low As $213.00
    $213.00
    Repair Yours $200.00
    SCHNEIDER ELECTRIC RM3TR112VS7

    SCHNEIDER ELECTRIC

    TELEMECANIQUE

    RM3TR112VS7

    DISCONTINUED BY MANUFACTURER, VOLTAGE LOSS RELAY, 3 PHASE, 380-420 VAC, 50/60 HZ, DIN RAIL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $360.00
    $360.00
    SCHNEIDER ELECTRIC S48891

    SCHNEIDER ELECTRIC

    SQUARE D

    S48891

    GROUND FAULT INTERFACE MODULE, USED ON: ,M/P/R FRAME, NS630B, NS3200 ,ELECTRONIC TRIP CIRCUIT BREAKER
    ✓ IN STOCK!
    Buy Surplus As Low As $1,928.00
    $1,928.00
    Repair Yours $1,350.00
    SCHNEIDER ELECTRIC RM22TA33

    SCHNEIDER ELECTRIC

    SQUARE D

    RM22TA33

    PHASE MONITORING RELAY, RM22 SERIES, 380-480 VAC, 2 NO/NC, 8 AMP/250 VAC, ELECTROMECHANICAL RELAY TYPE, DIN RAIL MOUNT
    ✓ IN STOCK!
    $158.00 Buy Surplus As Low As $95.00
    $95.00
    Repair Yours $200.00
    EDWARDS SIGNALING GFD

    EDWARDS SIGNALING

    GFD

    GROUND FAULT DETECTION MODULE. ONE REQUIRED FOR EVERY TWO 3-NSHM1/2S.
    $352.00 Buy New $352.00
    $212.00
    Repair Yours $200.00
    ASEA BROWN BOVERI 3AUA0000139144

    ASEA BROWN BOVERI

    3AUA0000139144

    FAN KIT, ACH550, R4 & R6 FRAMES, NEMA 1, INCLUDES HEATSINK FAN, RETAINER
    $432.00 Buy Surplus As Low As $260.00
    $260.00
    MARSH BELLOFRAM ARA-120-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    ARA-120-AFE

    RELAY, ARA SERIES, ALTERNATING RELAY, SURFACE-MOUNT, TRIPLEXOR, 120 VAC, 10 AMP
    ✓ IN STOCK!
    $445.00 Buy New $445.00
    $267.00
    Repair Yours $222.00
    MARSH BELLOFRAM DPR175A

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    DPR175A

    PHASE MONITORING RELAY, SPDT, 170-290VAC; PRODUCT RANGE:-; CONTACT CONFIGURATION:SPDT; CONTACT CURRENT:5A; RELAY MOUNTING:DIN RAIL; RELAY TERMINALS:SCREW; SWITCHING VOLTAGE MAX:250VAC; SUPPL ...
    ✓ IN STOCK!
    $115.00 Buy New $115.00
    $88.00
    Repair Yours $200.00
    MARSH BELLOFRAM CMI-120-ASE-20

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMI-120-ASE-20

    OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMI MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 120 V AC, 50/60 HZ, CURRENT TRIP POINTS - 4-20 AMP
    ✓ IN STOCK!
    $431.00 Buy New $431.00
    $259.00
    Repair Yours $214.97
    MARSH BELLOFRAM CMO-120-ASE-10

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMO-120-ASE-10

    OVERCURRENT MONITOR RELAY, CMO SERIES, 24-120 V AC/DC, 50/60 HZ, SURFACE MOUNT, 2-10 AMP ADJUSTABLE TRIP POINTS
    ✓ IN STOCK!
    $532.00 Buy New $532.00
    $320.00
    Repair Yours $266.00
    MARSH BELLOFRAM CMU-120-ASA-5

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMU-120-ASA-5

    UNDER CURRENT MONITOR, CMU SERIES, 120 VAC, PLUG-IN, 1 TO 5 AMP ADJUSTABLE CURRENT TRIP POINTS, 11 PIN
    ✓ IN STOCK!
    $376.00 Buy New $376.00
    $226.00
    Repair Yours $200.00
    MARSH BELLOFRAM CMB-120-AFA-1

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMB-120-AFA-1

    CURRENT MONITORING RELAY, CMB SERIES, AC GO/NO-GO, 120 V AC, 50/60 HZ, 1 AMPS, SINGLE POLE DOUBLE THROW, 8-PIN OCTAL TERMINATION
    ✓ IN STOCK!
    $182.00 Buy New $182.00
    $110.00
    Repair Yours $200.00
    MARSH BELLOFRAM SLA-120-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-120-ALA

    PHASE SEQUENCE/LOSS MONITOR, 120V, LOCK SHAFT ADJUSTABLE, 11 PIN CIRCULAR BASE
    ✓ IN STOCK!
    $553.00 Buy New $553.00
    $332.00
    Repair Yours $276.00
    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!
    $762.00 Buy New $762.00
    $458.00
    Repair Yours $381.00
    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!
    $149.00 Buy New $149.00
    $117.23
    Repair Yours $200.00
    MARSH BELLOFRAM SLA-380-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-380-ASA

    PHASE, MONITOR, RELAY, 5AMPS, 120VAC
    ✓ IN STOCK!
    $544.00 Buy New $544.00
    $414.00
    Repair Yours $272.00
    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!
    $354.00 Buy New $354.00
    $213.00
    Repair Yours $200.00
    MARSH BELLOFRAM SLA-480-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-480-AFE

    PHASE VOLTAGE MONITOR, RELAY, SLA SERIES, 480 VAC, SURFACE MOUNTED
    ✓ IN STOCK!
    $762.00 Buy New $762.00
    $594.43
    Repair Yours $381.00
    MARSH BELLOFRAM SLD-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLD-440-ALE

    PHASE MONITORING RELAY, 440-480 VAC, DPDT, 3 AMP, 600 VAC, SCREW TERMINATION
    ✓ IN STOCK!
    $529.00 Buy New $529.00
    $318.00
    Repair Yours $264.00
    MARSH BELLOFRAM SLM-120-ASE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLM-120-ASE

    PHASE MONITORS MICROPROCESSOR CONTROLLED
    ✓ IN STOCK!
    $810.00 Buy New $810.00
    $616.00
    Repair Yours $402.00
    MARSH BELLOFRAM SLM-230-ASE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLM-230-ASE

    PHASE MONITOR, MICROPROCESSOR CONTROLLED, 200-250 VAC, CONTACTS: 10 AMP @ 240 VAC
    ✓ IN STOCK!
    $618.00 Buy New $618.00
    $371.00
    Repair Yours $308.00
    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!
    $924.66 Buy New $924.66
    $435.00
    Repair Yours $290.00
    MARSH BELLOFRAM SLU-100-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLU-100-ASA

    PHASE MONITORING RELAY, SLU-100 SERIES, UNIVERSAL, SPDT CONTACT FORM, 10 AMP, 8 PIN, 550 VAC SUPPLY, 240 V RATING
    ✓ IN STOCK!
    $174.00 Buy New $174.00
    $105.00
    Repair Yours $200.00
    MARSH BELLOFRAM SLU-100-ASD

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLU-100-ASD

    PHASE MONITOR RELAY, SLU-100 SERIES, 3-PHASE, DIN RAIL MOUNT, UNIVERSAL, SPDT CONTACT FORM, 10 AMP, 550 VAC SUPPLY, 240 V RATING
    ✓ IN STOCK!
    $613.00 Buy New $613.00
    $368.00
    Repair Yours $306.00
    MARSH BELLOFRAM PBD-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBD-440-ALE

    3 PHASE SEQUENCE & VOLTAGE BAND MONITOR/RELAYS, MAX VOLTAGE 550 VAC, ADJUSTABLE RANGES 390-480 UNDER/440-540 OVER, DPDT, CONTACT RATING 600 VAC, AUTOMATIC RESET
    ✓ IN STOCK!
    $553.00 Buy New $553.00
    $332.00
    Repair Yours $276.00
    MARSH BELLOFRAM PBE-440-ASE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBE-440-ASE

    THREE PHASE VOLTAGE BAND MONITOR RELAY
    $970.00 Buy New $970.00
    $582.00
    Repair Yours $484.00
    MARSH BELLOFRAM GFD-100

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    GFD-100

    THREE PHASE GROUND FAULT DISPLAY, 208 - 600 VAC, TERMINAL STYLE - WIRE LEADS, 0 C - 55 C
    $610.00 Buy New $610.00
    $366.00
    Repair Yours $304.00
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