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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.

    Filter Results
    Results 501-550 of 805.
    WESTINGHOUSE 1875269A

    WESTINGHOUSE

    1875269A

    UNDER VOLTAGE RELAY, 0.5-2.5A, 60HZ, 4-16AMP TRIP, TYPE C0-8
    ✓ IN STOCK!
    $325.44 Buy Surplus As Low As $128.12
    $128.12
    RHEINTACHO 5333.001

    RHEINTACHO

    5333.001

    SPEED MONITOR RELAY
    ✓ IN STOCK!
    $451.00 Buy Surplus As Low As $164.75
    $164.75
    Repair Yours $200.00
    SCHWEITZER ENGINEERING SEL-287V-287V02-45X6XHGB

    SCHWEITZER ENGINEERING

    SEL-287V-287V02-45X6XHGB

    RELAY, DIFFERENTIAL LEVEL, VOLTAGE CONTROLLER, FOR GROUNDED SHUNT CAPACITOR BANK PROTECTION
    ✓ IN STOCK!
    $2,156.88 Buy Surplus As Low As $1,048.24
    $1,048.24
    Repair Yours $861.42
    SCHWEITZER ENGINEERING SEL-279-279000-47X6XHGX

    SCHWEITZER ENGINEERING

    SEL-279-279000-47X6XHGX

    RELAY, RECLOSING / VOLTAGE / SYNCHRONISM CHECK, SPECIAL SPEC-35, POWER SUPPLY / 15 W MAX / 85-264 VAC / 58-350 VDC / 50/60 HZ, LOGIC INPUT / 0-270 VAC / 125 VDC
    ✓ IN STOCK!
    $928.42 Buy Surplus As Low As $498.96
    $498.96
    Repair Yours $372.71
    RADWELL RAD-PM-004

    RADWELL

    RAD-PM-004

    PHASE MONITOR RELAY, 3-PHASE , PHASE LOSS, PHASE REVERSAL, UNDERVOLTAGE, 480VAC, 10A, SPDT
    ✓ IN STOCK!
    $131.00 Buy New $131.00
    $63.00
    RADWELL VERIFIED SUBSTITUTE 252B-SUB

    RADWELL VERIFIED SUBSTITUTE

    252B-SUB

    SUBSTITUTE FOR TIME MARK CORP 252B, PHASE MONITOR RELAY, 3-PHASE , PHASE LOSS, PHASE REVERSAL, UNDERVOLTAGE, 240VAC, 10A, SPDT
    ✓ IN STOCK!
    $94.00 Buy New $94.00
    RADWELL VERIFIED SUBSTITUTE PLM6805-SUB

    RADWELL VERIFIED SUBSTITUTE

    PLM6805-SUB

    SUBSTITUTE FOR ASEA BROWN BOVERI SYMCOM PLM6805, PHASE MONITOR RELAY, 3-PHASE , PHASE LOSS, PHASE REVERSAL, UNDERVOLTAGE, 240VAC, 10A, SPDT
    ✓ IN STOCK!
    $114.00 Buy New $114.00
    EATON CORPORATION 13535H111-2

    EATON CORPORATION

    CUTLER HAMMER

    13535H111-2

    AC TRANSFORMER RELAY, OPEN TYPE, 20/240 VAC, 50/60 HZ
    ✓ IN STOCK!
    $488.88 Buy Surplus As Low As $192.46
    $192.46
    SIEMENS 3UG5461-1AA40

    SIEMENS

    3UG5461-1AA40

    DC LOAD MONITORING RELAY FOR PROFINET, MAX. 2X8 A / 1X16 A DC, MAX. 800 V WIDTH: 22.5 MM MONITORING FOR VIOLATION OF UPPER AND LOWER LIMIT OF CURRENT, VOLTAGE AND POWER; ENERGY CONSUMPTION C ...
    ✓ IN STOCK!
    $1,494.00 Buy Surplus As Low As $619.92
    $619.92
    Repair Yours $571.70
    CONVERTEAM MVTU11K1CD0501G

    CONVERTEAM

    ALSTOM

    MVTU11K1CD0501G

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, UNDERVOLTAGE, DEFINITE TIME DELAY, 100-120 VAC RATED, 50/60 HZ RATED, 30-70 HZ OPERATING RANGE, 252 CONTINUOUS
    ✓ IN STOCK!
    Buy Surplus As Low As $396.81
    $396.81
    Repair Yours $329.35
    GENERAL ELECTRIC 12HGA14AX1A

    GENERAL ELECTRIC

    12HGA14AX1A

    DISCONTINUED BY MANUFACTURER, AUXILIARY RELAY, 125 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $161.40
    $161.40
    Repair Yours $300.00
    SIEMENS 5SM6024-2

    SIEMENS

    5SM6024-2

    ARC FAULT DETECTION DEVICE BLOCK AFDD, 1-40 A 230 V FOR CB AND RCBO 1+N 2MW
    ✓ IN STOCK!
    $285.44 Buy Surplus As Low As $217.80
    $217.80
    Repair Yours $405.83
    ELKO PRI-51/5A

    ELKO

    PRI-51/5A

    CURRENT MONITORING RELAY, 0.5-5 AMP, 24-240 VAC, 24 VDC, 50/60 HZ, 25 VA, 1.6 WATT, DIN RAIL MOUNT, IP40
    ✓ IN STOCK!
    $83.72 Buy Surplus As Low As $50.23
    $50.23
    AREVA MVAPM32D1AA2001A

    AREVA

    MVAPM32D1AA2001A

    DISCONTINUED BY MANUFACTURER, RELAY, GENERATOR PROTECTION, MVAPM SERIES, V X 1 / 110/125 VDC, V X 2 / 220/250 VDC, VN / 110 VAC, 50 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $89.22
    $89.22
    Repair Yours $300.00
    WESTINGHOUSE 293B285A11

    WESTINGHOUSE

    293B285A11

    DISCONTINUED BY MANUFACTURER, RELAY, SYNCHRO-VERIFIED, TYPE CVE, 120 V, 60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $718.03
    $718.03
    Repair Yours $482.73
    ASEA BROWN BOVERI 289B423A11

    ASEA BROWN BOVERI

    289B423A11

    DISCONTINUED BY MANUFACTURER, RELAY, DIRECTIONAL OVERCURRENT, CR-2 TYPE, 4-12 AMP-OVERCURRENT UNIT / 0.2-2 AMP-INDICATOR, 120 V
    ✓ IN STOCK!
    Buy Surplus As Low As $1,874.87
    $1,874.87
    Repair Yours $1,685.23
    ASEA BROWN BOVERI 443T2341

    ASEA BROWN BOVERI

    443T2341

    DISCONTINUED BY MANUFACTURER, RELAY, TIME OVERCURRENT, CIRCUIT SHEILD, 51Y TYPE, 125 VDC, 4-12 AMP TOC, 2-20 AMP IOC
    ✓ IN STOCK!
    Buy Surplus As Low As $2,110.01
    $2,110.01
    Repair Yours $1,945.90
    CR MAGNETICS CR4395-EH-24D-0.04-X-T-FP

    CR MAGNETICS

    CR4395-EH-24D-0.04-X-T-FP

    DISCONTINUED BY MANUFACTURER, CURRENT SENSING RELAY, SUPPLY: 24+/-10%VDC, TRIP POINT: 0.04AMPS, LOAD: NPN SINKING, 100MA MAX
    ✓ IN STOCK!
    Buy Surplus As Low As $97.00
    $97.00
    CR MAGNETICS CR4395-EH-24D-.04-X-FP-T PNP

    CR MAGNETICS

    CR4395-EH-24D-.04-X-FP-T PNP

    DISCONTINUED BY MANUFACTURER, SUPPLY: 24+/-10%VDC, TRIP POINT: 0.04AMPS, ENERGIZE: HI CURRENT (EH), LOAD: PNP - SOURCING, 100MA MAX
    ✓ IN STOCK!
    Buy Surplus As Low As $80.32
    $80.32
    DEIF RMV-112D-DELTA-440VAC-ND+ND-440VAC

    DEIF

    RMV-112D-DELTA-440VAC-ND+ND-440VAC

    PROTECTIVE VOLTAGE RELAY, RMV-112D, 440VAC, NORM. DEENERGIZED, UNDERVOLTAGE 80 TO 100%, OVERVOLTAGE 100 TO 120%, 0 TO 10S
    ✓ IN STOCK!
    $754.41 Buy Surplus As Low As $327.40
    $327.40
    Repair Yours $271.74
    DEIF RMV-112D-DELTA-415VAC-ND+ND-24VDC

    DEIF

    RMV-112D-DELTA-415VAC-ND+ND-24VDC

    PROTECTIVE VOLTAGE RELAY, RMV-112D, COUPLING: DELTA, MEASURING VOLTAGE: 415/240V, MODULE: 415V, SUPPLY: 24VDC, RELAY B: NORM. DEENERGIZED, RELAY C: NORM. DEENERGIZED, UNDERVOLTAGE: 80-100%, ...
    ✓ IN STOCK!
    $832.79 Buy Surplus As Low As $350.58
    $350.58
    Repair Yours $290.98
    DEIF RMV-112D-STAR-240VAC-NE+NE-24VDC

    DEIF

    RMV-112D-STAR-240VAC-NE+NE-24VDC

    PROTECTIVE VOLTAGE RELAY, RMV-112D, COUPLING: STAR, MEASURING VOLTAGE: 415/240VAC, MODULE: 240V, SUPPLY: 24VDC, RELAY B: NORM. ENERGIZED, RELAY C: NORM. ENERGIZED, UNDERVOLTAGE: 80-100%, OVE ...
    ✓ IN STOCK!
    $860.37 Buy Surplus As Low As $355.70
    $355.70
    Repair Yours $405.83
    DEIF RMV-112D-DELTA-415VAC-NDL+NDL-24VDC

    DEIF

    RMV-112D-DELTA-415VAC-NDL+NDL-24VDC

    VOLTAGE RELAY, UNI-LINE, TYPE RMV-112D, COUPLING: DELTA, MEASURING VOLTAGE: 240/415VAC, MODULE: 415V, SUPPLY: 24VDC, RELAY B: NORM. DEENERGIZED W/LATCH, RELAY C: NORM. DEENERGIZED W/LATCH
    ✓ IN STOCK!
    $832.79 Buy Surplus As Low As $359.89
    $359.89
    Repair Yours $291.14
    V INFINITY PTK25-D48-S12-T

    V INFINITY

    PTK25-D48-S12-T

    DISCONTINUED BY MANUFACTURER, VOLTAGE CONVERTER, DC-DC, AC-DC, SCREW CLAMP TERMINALS, 48 V INPUT @ 0.85 AMP, 12 V OUTPUT @ 2 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $37.30
    $37.30
    DEIF RMF-112D-110VAC-60HZ-ND-ND-110VDC

    DEIF

    RMF-112D-110VAC-60HZ-ND-ND-110VDC

    DISCONTINUED BY MANUFACTURER, FREQUENCY RELAY, UNI-LINE, TYPE: RMF-112D, MEAS VOLTAGE: 110V, MODULE: 110V, 60HZ, SUPPLY: 110VDC, RELAY B: NORM. DEENERGIZED, RELAY C: NORM. DEENERGIZED, UNDER ...
    ✓ IN STOCK!
    Buy Surplus As Low As $170.06
    $170.06
    Repair Yours $200.00
    DEIF TAS-331DG 2W3 -200-0-1500KW/440V(L-L) 3000A/5A -333-0-2500W 4-20MA -24-24MA 500OHM 24VDC

    DEIF

    TAS-331DG 2W3 -200-0-1500KW/440V(L-L) 3000A/5A -333-0-2500W 4-20MA -24-24MA 500OHM 24VDC

    DISCONTINUED BY MANUFACTURER, SELECTABLE AC-TRANSDUCER, TYPE: TAS-331DG, ORDER NO: 100018271.10, COUPLING: 2W3, RANGE: -200-0-1500KW, RATIO VT: 440V(L-L), RATIO CT: 3000A/5A, INPUT: -333-0-2 ...
    ✓ IN STOCK!
    Buy Surplus As Low As $153.53
    $153.53
    Repair Yours $200.00
    DEIF RMP121D

    DEIF

    RMP121D

    DISCONTINUED BY MANUFACTURER, REVERSE POWER RELAY, TYPE: RMP-121D, MEAS VOLTAGE: 110 VAC, MEAS POWER: 537W, SUPPLY: 110 VAC, COUPLING: 1W3, MODULE: 63.3V, MODULE: 3A, SCALE: 0.94, INVERSE TI ...
    ✓ IN STOCK!
    Buy Surplus As Low As $139.20
    $139.20
    Repair Yours $300.00
    TELE CONTROLS E1IM10AACL10 230V AC

    TELE CONTROLS

    E1IM10AACL10 230V AC

    CURRENT MONITORING RELAY, 1-PH, 10A AC, MULTIFUNCTION, 1 CO, SPDT, LED INDICATORS, 230V AC SUPPLY VOLTAGE
    ✓ IN STOCK!
    $242.47 Buy New $242.47
    $155.18
    Repair Yours $300.00
    TELE CONTROLS G2IO5A20-W1+TR2 230V

    TELE CONTROLS

    G2IO5A20-W1+TR2 230V

    CURRENT MONITORING RELAY, OVERLOAD, 1 PHASE, 5A AC/DC RANGE, OVER CURRENT, 2 CO, DPDT, RAPID DETECTION, LED INDICATORS, BUILT IN 230 VAC TR2 MODULE
    ✓ IN STOCK!
    $284.86 Buy New $284.86
    $170.91
    Repair Yours $200.00
    TELE CONTROLS G2TF02 24-240VAC/DC

    TELE CONTROLS

    G2TF02 24-240VAC/DC

    PTC MOTOR MONITORING RELAY, TEMPERATURE MONITORING, LED INDICATORS, 2 CO, DPDT RELAY OUTPUT, 24-240V AC/DC SUPPLY
    ✓ IN STOCK!
    $320.25 Buy New $320.25
    $183.00
    Repair Yours $300.00
    TELE CONTROLS V2PF480Y/277VSY01

    TELE CONTROLS

    V2PF480Y/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!
    $170.00 Buy New $170.00
    $113.00
    Repair Yours $300.00
    SCHWEITZER ENGINEERING SEL-251D-251D00-4356UHGB

    SCHWEITZER ENGINEERING

    SEL-251D-251D00-4356UHGB

    DISCONTINUED BY MANUFACTURER, DISTRIBUTION RELAY, SEL-251D, PHASE OVERCURRENT RELAY W/ VOLTAGE CONTROL, GROUND OVERCURRENT, FAULT LOCATOR, SELOGIC CONTROL INPUT / 125 VD, POWER SUPPLY / 15 W ...
    ✓ IN STOCK!
    Buy Surplus As Low As $702.95
    $702.95
    Repair Yours $583.45
    SCHWEITZER ENGINEERING SEL-311C-0311C01H242542X

    SCHWEITZER ENGINEERING

    SEL-311C-0311C01H242542X

    DISCONTINUED BY MANUFACTURER, PROTECTION AND AUTOMATION SYSTEM, SEL-311C, LOGIC INPUT / 5 PHASE / 5 POLE / 125 VDC / 150 VAC WYE, POWER SUPPLY / 25 W / 85-350 VDC / 85-364 VAC / 125-250 VDC ...
    ✓ IN STOCK!
    Buy Surplus As Low As $2,387.72
    $2,387.72
    Repair Yours $1,981.81
    SCHWEITZER ENGINEERING SEL-551-0551003X532X

    SCHWEITZER ENGINEERING

    SEL-551-0551003X532X

    DISCONTINUED BY MANUFACTURER, OVERCURRENT PROTECTIVE RELAY, SEL-551, 85-140 VAC, 36-200 VDC, 5.5W MAXIMUM, 125 VDC LOGIC INPUT, EIA-45 SERIAL PORT
    ✓ IN STOCK!
    Buy Surplus As Low As $594.75
    $594.75
    Repair Yours $580.76
    SAMWHA PMR-220N7

    SAMWHA

    PMR-220N7

    DISCONTINUED BY MANUFACTURER, VOLTAGE MONITORING RELAY, DIN-RAIL, 160-300 VAC, 1 SPDT, 50/60 HZ, 220 VAC SUPPLY
    ✓ IN STOCK!
    Buy Surplus As Low As $86.61
    $86.61
    Repair Yours $300.00
    CROUZET DWRA2230A

    CROUZET

    SYRELEC

    DWRA2230A

    DISCONTINUED BY MANUFACTURER, PHASE MONITORING RELAY, WRA2 SERIES, 3 PHASE, 10 AMP, 230 VAC, 50/60 HZ, DIN RAIL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $190.00
    $190.00
    Repair Yours $300.00
    SIEMENS 3UG4582-1AW31

    SIEMENS

    3UG4582-1AW31

    INSULATION MONITORING RELAY FOR UNGROUNDED (IT) NETWORKS UP TO 250 V AC, 15-400 HZ AND UP TO 300 V DC MEASURING RANGE 1-100 KOHM SUPPLY VOLTAGE 24-240 V AC/DC 22.5 MM, 1 CHANGEOVER CONTACT S ...
    ✓ IN STOCK!
    $742.00 Buy Surplus As Low As $446.00
    $446.00
    Repair Yours $371.00
    SIEMENS 3UG4582-2AW31

    SIEMENS

    3UG4582-2AW31

    INSULATION MONITORING RELAY FOR NON-GROUNDED (IT) NETWORKS UP TO 250 V AC, 15-400 HZ AND UP TO 300 V DC MEASURING RANGE 1-100 KOHM SUPPLY VOLTAGE 24-240 V AC/DC 22.5 MM, 1 CHANGEOVER CONTACT ...
    ✓ IN STOCK!
    $742.00 Buy Surplus As Low As $446.00
    $446.00
    Repair Yours $371.00
    TIME MARK CORP 2601-240VAC

    TIME MARK CORP

    2601-240VAC

    VOLTAGE FREQUENCY MONITOR, UNDER-VOLTAGE, 200-240VAC, SIZE 3.52IN X 2.44IN X 1.75IN
    ✓ IN STOCK!
    $164.00 Buy New $164.00
    $79.00
    LITTELFUSE 460-L

    LITTELFUSE

    460-L

    PHASE MONITORING RELAY, 460 SERIES, SPDT, 10 A, DIN RAIL, PANEL, SCREW, 240 VAC
    ✓ IN STOCK!
    $156.06 Buy Surplus As Low As $93.63
    $93.63
    Repair Yours $300.00
    SIEMENS 3UG5512-1AR20

    SIEMENS

    3UG5512-1AR20

    LINE MONITORING RELAY, 3 PHASE, 160-690 VAC, 15-70 HZ, FOR PHASE FAILURE, 1 CHANGE OVER CONTACT, SCREW TERMINAL, -25 TO +60 DEGREE C, IP20, SUCCESSOR FOR: 3UG4512-1AR20
    ✓ IN STOCK!
    $360.35 Buy Surplus As Low As $216.21
    $216.21
    Repair Yours $300.00
    COPELAND 085-0160-00

    COPELAND

    085-0160-00

    VOLTAGE MONITOR, 190-630VAC, 3PHASE ,50/60HZ, DIRECT CROSS OF ICM450
    ✓ IN STOCK!
    $397.09 Buy Surplus As Low As $238.25
    $238.25
    Repair Yours $300.00
    MACROMATIC VAKP012D

    MACROMATIC

    VAKP012D

    VOLTAGE MONITOR RELAY FOR 12 VDC, 10 AMP RELAY, DPDT, ADJ PICK UP AND DROP OUT, ADJ DROPOUT DELAY 0.1-10 SECONDS, PLUG-IN
    ✓ IN STOCK!
    $177.00 Buy New $177.00
    $117.00
    Repair Yours $300.00
    MACROMATIC PMDU

    MACROMATIC

    PMDU

    PHASE MONITOR RELAY, 3-PHASE MONITOR RELAY, 190-500 VAC, DIN RAIL, 10 AMP DPDT RELAYS, PHASE LOSS, REVERSAL - FIXED, UNBALANCE, OVER/UNDER VOLTAGE - ADJUSTABLE
    ✓ IN STOCK!
    $379.05 Buy New $379.05
    $227.43
    Repair Yours $200.00
    WESTINGHOUSE 1875289A

    WESTINGHOUSE

    1875289A

    DISCONTINUED BY MANUFACTURER, C09-C511BA1, RELAY, OVERCURRENT, RELAY, OVERCURRENT, 4-12AMP ,TYPE CO-9
    ✓ IN STOCK!
    Buy Surplus As Low As $514.03
    $514.03
    Repair Yours $474.10
    WESTINGHOUSE 12PVD11C1A

    WESTINGHOUSE

    12PVD11C1A

    RELAY DIFFERENTIAL 150V TYPE PVD
    ✓ IN STOCK!
    Buy Surplus As Low As $1,161.30
    $1,161.30
    Repair Yours $963.88
    SIEMENS 3TK2040-0AP6

    SIEMENS

    3TK2040-0AP6

    DISCONTINUED BY MANUFACTURER, MINIATURE CONTACTOR, SCREW TERMINAL, 4NO, SNAP-ON MOUNTING, STANDARD MOUNTING RAIL, 220/240VAC, 50/60 HZ, AC OPERATION
    ✓ IN STOCK!
    Buy Surplus As Low As $77.29
    $77.29
    SIEMENS 3RR22421FW30

    SIEMENS

    3RR22421FW30

    MONITORING RELAY, 4-40 AMP, 3 PHASE, 24-240 VAC/DC, 20-400 HZ, CAN BE MOUNTED CONTACTOR 3RT2, NOISE PULSE SUPPRESSION: 0-30S, PAUSE AFTER FAULT: 0-300 MIN, SCREW CONNECTION SYSTEM , 3RR22421 ...
    ✓ IN STOCK!
    $718.00 Buy Surplus As Low As $474.00
    $474.00
    Repair Yours $395.00
    SIEMENS 5TT3408

    SIEMENS

    5TT3408

    VOLTAGE RELAY, N-TYPE, 230/400V, 2CO, WITH TRANSPARENT CAP, SCREW TERMINALS, DIN RAIL MOUNTABLE
    ✓ IN STOCK!
    $2,179.00 Buy Surplus As Low As $1,657.00
    $1,657.00
    Repair Yours $1,086.00
    ICM ICM491

    ICM

    ICM491

    DISCONTINUED BY MANUFACTURER, LINE MONITOR, SINGLE PHASE, 95/270 VAC, SPDT
    ✓ IN STOCK!
    Buy Surplus As Low As $600.00
    $600.00
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