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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 501-550 of 838.
    ASEA BROWN BOVERI 202T3004-UL

    ASEA BROWN BOVERI

    202T3004-UL

    DISCONTINUED BY MANUFACTURER, MONITOR, GROUND FAULT, 24/32VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $112.21
    $112.21
    Repair Yours $300.00
    SIEMENS 947PB10AG

    SIEMENS

    FURNAS ELECTRIC CO

    947PB10AG

    DISCONTINUED BY MANUFACTURER, VOLTAGE MONITOR 240VAC 200-235V TRIP RANGE
    ✓ IN STOCK!
    Buy Surplus As Low As $84.15
    $84.15
    NORTONICS FOXTAM LIMITED YWRUP-S-400V-3W

    NORTONICS FOXTAM LIMITED

    FOXTAM CONTROLS

    YWRUP-S-400V-3W

    DISCONTINUED BY MANUFACTURER, VOLTAGE MONITORING RELAY, 10AMP, 400V, 3W
    ✓ IN STOCK!
    Buy Surplus As Low As $108.00
    $108.00
    ASEA BROWN BOVERI 1SVR740824R9300

    ASEA BROWN BOVERI

    1SVR740824R9300

    MONITOR RELAY, 3 PHASE, 4 AMP, 2230-500 VAC, 2 CO (SPDT CONTACTS), SCREW TYPE TERMINAL, DIN RAIL MOUNT, -25 T0+60 DEGREES C, (CM-PFS.P)
    ✓ IN STOCK!
    $197.00 Buy Surplus As Low As $150.00
    $150.00
    Repair Yours $300.00
    HONGFA HFD23/012-1ZS

    HONGFA

    HFD23/012-1ZS

    SIGNAL RELAY, SPDT, SENSITIVE, 12V/2A/TH ROHS COMPLIANT: YES
    ✓ IN STOCK!
    $1.83 Buy Surplus As Low As $1.04
    $1.04
    Repair Yours $300.00
    SIEMENS 3RH11222JC40

    SIEMENS

    3RH11222JC40

    CONTROL RELAY. 2NO+2NC
    ✓ IN STOCK!
    Buy Surplus As Low As $162.00
    $162.00
    Repair Yours $300.00
    GENERAL ELECTRIC 36C774137ABG08

    GENERAL ELECTRIC

    36C774137ABG08

    DISCONTINUED BY MANUFACTURER, GROUND FAULT DETECTOR
    ✓ IN STOCK!
    Buy Surplus As Low As $68.26
    $68.26
    Repair Yours $300.00
    ASEA BROWN BOVERI 609300K02

    ASEA BROWN BOVERI

    609300K02

    PHASE SENSOR, 600A BREAKING RATE, K800
    ✓ IN STOCK!
    $586.00 Buy Surplus As Low As $166.64
    $166.64
    Repair Yours $300.00
    DOLD EH9997.11 AC/DC24V US=12-70V

    DOLD

    EH9997.11 AC/DC24V US=12-70V

    0000517, FAULT ANNUNCIATOR SYSTEM, 1 CHANGEOVER CONTACT, AC/DC 24V, 12-70V, 6 LED SIGNALS, FRONT PANEL MOUNTING
    ✓ IN STOCK!
    $432.71 Buy Surplus As Low As $225.90
    $225.90
    Repair Yours $300.00
    CEE YTM 7111

    CEE

    YTM 7111

    ADMITTANCE RELAY / ALTERNATOR LOSS OF FIELD PROTECTION, 7000 SERIES, TIME DELAY / 0.6 TO 6 SECOND / 1-10 SECOND, K1 / 70-300 %, K2 / 5-34 %, 1-5 AMP, 100 V, 50/60 HZ, AUX: CC/DC 110 V, ANSI ...
    ✓ IN STOCK!
    $899.94 Buy Surplus As Low As $287.98
    $287.98
    Repair Yours $300.00
    TELE CONTROLS E1PF480Y/277VSY01

    TELE CONTROLS

    E1PF480Y/277VSY01

    PHASE LOSS MONITOR, PHASE BALANCE, PHASE ROTATION, PHASE SEQUENCE 3-PH, 208-380V AC, 1 CO, SPDT RELAY OUTPUT, LED INDICATORS, ADJUSTABLE PHASE BALANCE
    ✓ IN STOCK!
    $102.77 Buy New $102.77
    $61.67
    Repair Yours $300.00
    DEIF RMV-112D-DELTA-220VAC-ND+ND-220VAC

    DEIF

    RMV-112D-DELTA-220VAC-ND+ND-220VAC

    PROTECTIVE VOLTAGE RELAY, RMV-112D, COUPLING: DELTA, MEASURING VOLTAGE: 220/127V, MODULE: 220V, SUPPLY: 220VAC, RELAY B: NORM. DEENERGIZED, RELAY C: NORM. DEENERGIZED, UNDERVOLTAGE: 80-100%, ...
    ✓ IN STOCK!
    $754.41 Buy Surplus As Low As $227.09
    $227.09
    Repair Yours $300.00
    ASEA BROWN BOVERI CM-PVE

    ASEA BROWN BOVERI

    CM-PVE

    PHASE MONITORING RELAY, 4 AMP, 400 V, 3 KV, 1 NO, WITH NEUTRAL CONNECTION, POWERED BY MEASURING CIRCUIT, FOR MONITORING OF 1-3 PHASE OVER- AND UNDERVOLTAGE, (1SVR550870R9400)
    ✓ IN STOCK!
    $119.00 Buy Surplus As Low As $72.00
    $72.00
    CR MAGNETICS CR4395-EH-120-110-A-CD

    CR MAGNETICS

    CR4395-EH-120-110-A-CD

    DISCONTINUED BY MANUFACTURER, CURRENT SENSING RELAY, TIME DELAY: .5-6SEC, TRIP RANGE: 1-10ACA, SUPPLY: 120 +/-10% VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $56.50
    $56.50
    ASEA BROWN BOVERI 411T4175-HF

    ASEA BROWN BOVERI

    411T4175-HF

    DISCONTINUED BY MANUFACTURER, RELAY, UNDERVOLTAGE PHASE SEQUENCE, 27N TYPE, CIRCUIT SHIELD, DEFINITE CURVE, 0-10 SECOND, 2-C, SINGLE PHASE, 60-110V TAP RANGE, 150V MAX, 50/60 HZ, CONTROL 48/ ...
    ✓ IN STOCK!
    Buy Surplus As Low As $385.00
    $385.00
    Repair Yours $319.55
    AREVA VAJHM53SF147D/M

    AREVA

    VAJHM53SF147D/M

    DISCONTINUED BY MANUFACTURER, TRIPPING RELAY, TYPE VAJ, 110 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $72.27
    $72.27
    MARSH BELLOFRAM SAL-575-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SAL-575-ALE

    DISCONTINUED BY MANUFACTURER, PHASE MONITOR, 575 V AC, 50/60 HZ, 3 A, 600 V AC RES. RATED CONTACTS, LED INDICATOR, SCREW CLAMP TERMINALS
    ✓ IN STOCK!
    Buy Surplus As Low As $125.11
    $125.11
    Repair Yours $300.00
    GENERAL ELECTRIC 12HGA18L2A

    GENERAL ELECTRIC

    12HGA18L2A

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, 125 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $204.78
    $204.78
    Repair Yours $300.00
    TELE CONTROLS G2JM5AL20

    TELE CONTROLS

    G2JM5AL20

    CURRENT MONITORING RELAY, OVERLOAD, 3-PH, 5A AC/DC RANGE, MULTIFUNCTION, 2 CO, DPDT, LED INDICATORS, SUPPLY VOLTAGE VIA TR2 MODULES, FOR USE WITH 5A CURRENT TRANSFORMERS
    ✓ IN STOCK!
    $412.34 Buy New $412.34
    $273.11
    Repair Yours $300.00
    RADWELL VERIFIED SUBSTITUTE PLM6502-SUB

    RADWELL VERIFIED SUBSTITUTE

    PLM6502-SUB

    SUBSTITUTE FOR ASEA BROWN BOVERI SSAC PLM6502, PHASE MONITOR RELAY, 3-PHASE , PHASE LOSS, PHASE REVERSAL, UNDERVOLTAGE, 240VAC, 10A, SPDT
    ✓ IN STOCK!
    $114.00 Buy New $114.00
    SYMCOM 201-200-DPDT-60MS

    SYMCOM

    201-200-DPDT-60MS

    VOLTAGE MONIOR, 3-PHASE MOTOR PROTECTION, USED ON 120V OR 240V, 50/60HZ MOTORS TO PROTECT FROM DAMAGE CAUSED BY SINGLE PHASING, LOW VOLTAGE, PHASE REVERSAL, AND VOLTAGE UNBALANCE,
    ✓ IN STOCK!
    $93.79 Buy Surplus As Low As $51.97
    $51.97
    ASEA BROWN BOVERI CM-SRS.22S

    ASEA BROWN BOVERI

    CM-SRS.22S

    CURRENT MONITORING RELAY, 24-240V AC/DC, 50/60 HZ, OVER- OR UNDERCURRENT MONITORING, SCREW TERMINALS, DIN RAIL MOUNT
    ✓ IN STOCK!
    $384.41 Buy Surplus As Low As $212.53
    $212.53
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CA1A-DC12V-A

    MATSUSHITA ELECTRIC

    AROMAT

    CA1A-DC12V-A

    CA RELAY
    ✓ IN STOCK!
    $123.30 Buy Surplus As Low As $73.98
    $73.98
    Repair Yours $300.00
    ASEA BROWN BOVERI WLM645A5S

    ASEA BROWN BOVERI

    SSAC

    WLM645A5S

    SSAC, ASEA BROWN BOVERI, WLM645A5S, VOLTAGE MONITOR THREE PHASE, 200/240VAC, 5SEC TRIP DELAY
    ✓ IN STOCK!
    $162.66 Buy Surplus As Low As $74.05
    $74.05
    Repair Yours $300.00
    NK TECHNOLOGIES AGT1-420-24L-FL

    NK TECHNOLOGIES

    AGT1-420-24L-FL

    AC GROUND FAULT TRANSDUCER SENSORS,AGT SERIES,SOLID-CORE, 24L - 24 VDC LOOP-POWERED, 0-50 MA RANGE, TOP TERMINALS, 4-20 MA
    ✓ IN STOCK!
    $347.00 Buy Surplus As Low As $229.73
    $229.73
    Repair Yours $300.00
    OMRON K8DT-AW3CD

    OMRON

    K8DT-AW3CD

    RELAY OUTPUT, 24 VAC/VDC, SPDT, 5 AMP, 0.1-30 SECOND DELAY TIME, DIN RAIL MOUNT
    ✓ IN STOCK!
    $146.00 Buy Surplus As Low As $120.55
    $120.55
    Repair Yours $300.00
    EATON CORPORATION ARD420L

    EATON CORPORATION

    CUTLER HAMMER

    ARD420L

    4 POLE ARD RELAY WITH 2 N/O CARTRIDGES. 24 VDC COIL.
    ✓ IN STOCK!
    $946.00 Buy Surplus As Low As $460.16
    $460.16
    Repair Yours $412.00
    ASEA BROWN BOVERI DDA204A-63/0.03

    ASEA BROWN BOVERI

    DDA204A-63/0.03

    SENSOR, 63A, 7.6W, 4POLE, 230/400V, 30MA
    ✓ IN STOCK!
    $480.00 Buy Surplus As Low As $365.00
    $365.00
    ASEA BROWN BOVERI 1SVR550881R9400

    ASEA BROWN BOVERI

    1SVR550881R9400

    (PRICE/EA) CM-PBE PHASE LOSS MONI. 3PH.+ N , 1SVR550881R9400
    ✓ IN STOCK!
    $137.55 Buy Surplus As Low As $39.05
    $39.05
    Repair Yours $300.00
    NK TECHNOLOGIES AG3-NOAC-24U-NF-TR3

    NK TECHNOLOGIES

    AG3-NOAC-24U-NF-TR3

    AC GROUND FAULT SENSORS, AG SERIES, SOLID STATE OUTPUT,SOLID-CORE,24U - 24 VAC/VDC POWERED, JUMPER SELECT 5, 10 OR 30 MA SETPOINT, NORMALLY DE-ENERGIZED, TOP TERMINALS, N.O. 1 A @ 240 VAC
    ✓ IN STOCK!
    $414.00 Buy Surplus As Low As $191.84
    $191.84
    Repair Yours $300.00
    OMRON K8DT-AW1TD

    OMRON

    K8DT-AW1TD

    MEASURING AND MONITORING, CURRENT RELAY, 1-PHASE, 24VAC, DIN RAIL, 50/60HZ
    ✓ IN STOCK!
    $262.00 Buy Surplus As Low As $135.00
    $135.00
    Repair Yours $300.00
    MACROMATIC PCPU

    MACROMATIC

    PCPU

    MONITOR RELAY, 3-PHASE, 190-500VAC, 8 PIN SPDT, 10AMP, PHASE REVERSAL - FIXED TRIP
    ✓ IN STOCK!
    $117.00 Buy New $117.00
    $41.00
    BENDER RCMA420-D-1

    BENDER

    RCMA420-D-1

    GROUND-FAULT MONITOR, FOR GROUNDED AND HIGH-RESISTANCE, 10MA-500MA, RMS MEASURMENT VALUES
    ✓ IN STOCK!
    $1,551.90 Buy Surplus As Low As $450.66
    $450.66
    BENDER RCM420-D-1

    BENDER

    RCM420-D-1

    GROUND-FAULT MONITOR, 10 AMP, 460 VAC, 94 VDC, 42- 2000 HZ, 10 MA, 1X NO/NC, START UP DELAY, LED INDICATOR, SCREW TYPE TERMINAL, DIN RAIL MOUNT
    ✓ IN STOCK!
    $976.14 Buy Surplus As Low As $431.48
    $431.48
    Repair Yours $390.00
    MARSH BELLOFRAM VBA-12-DLA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    VBA-12-DLA

    SINGLE PHASE VOLTAGE BAND MONITOR/RELAYS
    ✓ IN STOCK!
    $529.00 Buy New $529.00
    $371.00
    Repair Yours $300.00
    MARSH BELLOFRAM UOA-240-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-240-ALA

    VOLTAGE MONITORING RELAY, UOA SERIES, 205-250 VAC DROP-OUT, 215-260 VAC PICK-UP, 10 V HYSTERESIS, LOCKNUT ADJUSTMENT, DPDT, 8-PIN OCTAL
    ✓ IN STOCK!
    $349.90 Buy New $349.90
    $209.94
    Repair Yours $300.00
    MARSH BELLOFRAM UOA-208-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-208-ALA

    SINGLE PHASE UNDER VOLTAGE MONITOR/RELAY
    ✓ IN STOCK!
    $400.19 Buy New $400.19
    $240.11
    Repair Yours $300.00
    MARSH BELLOFRAM UOA-110-DLA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-110-DLA

    VOLTAGE MONITORING RELAY, UOA SERIES, 92-125 VDC DROP-OUT, 97-130 VDC PICK-UP, 5 V HYSTERESIS, LOCKNUT ADJUSTMENT
    ✓ IN STOCK!
    $233.24 Buy New $233.24
    $155.00
    Repair Yours $300.00
    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!
    $532.03 Buy New $532.03
    $319.22
    Repair Yours $300.00
    ASEA BROWN BOVERI 1495B30A22

    ASEA BROWN BOVERI

    1495B30A22

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, 120V, 250VDC, IVS 55-140VAC, TYPE CV7
    ✓ IN STOCK!
    Buy Surplus As Low As $220.00
    $220.00
    Repair Yours $300.00
    AUTOMATION DIRECT GFSL30-M1A-120A-F

    AUTOMATION DIRECT

    ACUAMP

    GFSL30-M1A-120A-F

    ACUAMP GROUND FAULT SENSOR, LARGE APERTURE FIXED CORE, 5, 10, OR 30 MA SELECTABLE TRIP POINT, RELAY, SPST-N.O., MANUAL RESET OUTPUT, 120 VAC OPERATING VOLTAGE.
    ✓ IN STOCK!
    $539.00 Buy Surplus As Low As $207.57
    $207.57
    Repair Yours $300.00
    INGERSOLL RAND RLY3715

    INGERSOLL RAND

    TRANE

    RLY3715

    START RELAY, SPST 35 AMP, REPLACES RLY1097, HVAC PARTS, SAME AS 3ARR3-J4A4, B100201P06,RLY1097,RLY-01097,RLY3715
    ✓ IN STOCK!
    $59.00 Buy Surplus As Low As $37.84
    $37.84
    Repair Yours $300.00
    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 $139.70
    $139.70
    Repair Yours $300.00
    SCHNEIDER ELECTRIC RM4UA33MW

    SCHNEIDER ELECTRIC

    TELEMECANIQUE

    RM4UA33MW

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, 300V, 5AMP, RM4, + OPTIONS, REPLACED BY RM22UA33MR
    ✓ IN STOCK!
    Buy Surplus As Low As $299.11
    $299.11
    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 $370.80
    $370.80
    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!
    $358.40 Buy Surplus As Low As $297.47
    $297.47
    Repair Yours $300.00
    REGAL REXNORD 303-237

    REGAL REXNORD

    UNICO

    303-237

    DISCONTINUED BY MANUFACTURER, RELAY MODULE, LNO CONVERTER, INTERFACE ADAPTER FIBER OPTIC
    ✓ IN STOCK!
    Buy Surplus As Low As $162.00
    $162.00
    R-K ELECTRONICS DPM-120A-B

    R-K ELECTRONICS

    DPM-120A-B

    VOLTAGE MONITOR, W/DISPLAY, DIGITAL, MULTI-RANGE, 3 PHASE, 200-240/600 VAC, 120 VAC SUPPLY, SURFACE MOUNT
    ✓ IN STOCK!
    $171.00 Buy New $171.00
    $108.15
    Repair Yours $300.00
    WESTINGHOUSE 1293C47G12

    WESTINGHOUSE

    1293C47G12

    DISCONTINUED BY MANUFACTURER, GROUND FAULT RELAY, (P/N 255P156H06C), .125 AMPS, 120 VAC, 50/60 HZ, 28-125 VDC OUTPUT, 255P156H06C
    ✓ IN STOCK!
    Buy Surplus As Low As $315.82
    $315.82
    GENERAL ELECTRIC 12PJC11AV1A

    GENERAL ELECTRIC

    12PJC11AV1A

    DISCONTINUED BY MANUFACTURER, INSTANTANEOUS CURRENT RELAY, 1.5 AMP, DC/25/60 CY, TYPE PJC
    ✓ IN STOCK!
    Buy Surplus As Low As $251.98
    $251.98
    Repair Yours $300.00
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