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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 201-250 of 693.
    GENERIC KH/U-..-H BV923

    GENERIC

    KH/U-..-H BV923

    RELAY
    ✓ IN STOCK!
    $63.00 Buy Surplus As Low As $31.50
    $31.50
    LITTELFUSE 102A

    LITTELFUSE

    102A

    VOLTAGE MONITOR, 3-PHASE, SPDT-1 FORM C, 190-480 VAC, 50/60 HZ, 5 WATTS, 12 - 18 AWG WIRE SIZE, -40 TO 70 DEG. C
    ✓ IN STOCK!
    $255.00 Buy Surplus As Low As $153.00
    $153.00
    Repair Yours $200.00
    HEATCRAFT 22535601

    HEATCRAFT

    22535601

    PHASE MONITOR 190-480V 50/60H
    $500.00 Buy Surplus As Low As $300.00
    $300.00
    Repair Yours $249.00
    RADWELL VERIFIED SUBSTITUTE DMLUBRAAA-SUB

    RADWELL VERIFIED SUBSTITUTE

    DMLUBRAAA-SUB

    SUBSTITUTE FOR SSAC DMLUBRAAA, PHASE MONITOR RELAY, 3-PHASE , 190-500 VAC, DIN RAIL, 10 AMP DPDT RELAYS, PHASE LOSS, REVERSAL - FIXED, UNBALANCE, OVER/UNDER VOLTAGE - ADJUSTABLE
    ✓ IN STOCK!
    $145.00 Buy New $145.00
    Repair Yours $200.00
    EATON CORPORATION 13535H111-2

    EATON CORPORATION

    CUTLER HAMMER

    13535H111-2

    AC TRANSFORMER RELAY, OPEN TYPE, 20/240 VAC, 50/60 HZ
    ✓ IN STOCK!
    $679.00 Buy Surplus As Low As $289.00
    $289.00
    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
    $69.00 Buy Surplus As Low As $42.00
    $42.00
    MACROMATIC PC1MDUL

    MACROMATIC

    PC1MDUL

    PHASE MONITOR RELAY, SPDT, 5A, 250VAC; PRODUCT RANGE:PC1 SERIES; CONTACT CONFIGURATION:SPDT; CONTACT CURRENT:5A; RELAY MOUNTING:DIN RAIL; RELAY TERMINALS:SCREW; SWITCHING VOLTAGE MAX:250VAC; ...
    $1,024.00 Buy New $1,024.00
    $615.00
    Repair Yours $511.00
    TELE CONTROLS E1YM480Y/277VS10

    TELE CONTROLS

    E1YM480Y/277VS10

    VOLTAGE MONITOR, PHASE ROTATION, PHASE SEQUENCE 3-PH, 208-380V AC, 1 CO, SPDT RELAY OUTPUT, LED INDICATORS, ADJUSTABLE THRESHOLDS, ADJUSTABLE TRIPPING DELAY
    $124.00 Buy New $124.00
    $75.00
    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
    $206.66 Buy New $206.66
    $155.28
    Repair Yours $200.00
    TELE CONTROLS G2JM5AL20 24-240V AC/DC

    TELE CONTROLS

    G2JM5AL20 24-240V AC/DC

    CURRENT MONITORING RELAY, OVERLOAD, 3-PH, 5A AC/DC RANGE, MULTIFUNCTION, 2 CO, DPDT, LED INDICATORS, SUPPLY VOLTAGE 24-240V AC/DC, FOR USE WITH 5A CURRENT TRANSFORMERS
    $245.00 Buy New $245.00
    $147.00
    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!
    $182.00 Buy New $182.00
    $110.00
    Repair Yours $200.00
    TELE CONTROLS G4BM480V12ADTL20 24-240V AC/DC

    TELE CONTROLS

    G4BM480V12ADTL20 24-240V AC/DC

    REAL POWER MONITORING RELAY, 1 OR 3 PHASE MAINS, MULTIFUNCTION, 2 CO, DPDT, TEMPERATURE MONITORING OF THE MOTOR WINDING, DIGITAL LCD DISPLAY FOR SETTING
    $675.00 Buy New $675.00
    $405.00
    Repair Yours $337.00
    TELE CONTROLS S1MMMA500VHM

    TELE CONTROLS

    S1MMMA500VHM

    POWER/ENERGY METER, 3-PHASE, UP TO 500V P-P AND UNIVERSAL CT INPUT WITH MODBUS RTU / RS485 INTERFACE, MEASUREMENTS: IRMS, VRMS, IPK, VPK PER PHASE / ACTIVE POWER P (W) TOTAL & PER PHASE / RE ...
    $862.00 Buy New $862.00
    $518.00
    Repair Yours $430.00
    TELE CONTROLS S9XM300A1000VM

    TELE CONTROLS

    S9XM300A1000VM

    POWER/ENERGY METER, 1-PH, TO 300A AND 1000V AC/DC, MODBUS RTU / RS485 INTERFACE, DIN RAIL MOUNT, HORIZONTAL OR VERTICAL, LED INDICATOR, BUILT IN CURRENT SENSOR
    $432.00 Buy New $432.00
    $260.00
    Repair Yours $216.00
    LITTELFUSE 201A-AU

    LITTELFUSE

    201A-AU

    PHASE MONITORING RELAY, 201A-AU SERIES, SPDT, 10 A, SOCKET, QUICK CONNECT, 240 VAC
    ✓ IN STOCK!
    $195.00 Buy Surplus As Low As $117.00
    $117.00
    LITTELFUSE 460-L

    LITTELFUSE

    460-L

    PHASE MONITORING RELAY, 460 SERIES, SPDT, 10 A, DIN RAIL, PANEL, SCREW, 240 VAC
    $171.00 Buy Surplus As Low As $103.00
    $103.00
    Repair Yours $200.00
    MARSH BELLOFRAM DPR350C

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    DPR350C

    PHASE MONITORING RELAY, SPDT, 5A, 250VAC
    $179.00 Buy New $179.00
    $108.00
    Repair Yours $200.00
    DOLD MK9056.12 AC50/60HZ 380-500V

    DOLD

    MK9056.12 AC50/60HZ 380-500V

    PHASE MONITORING RELAY, 3 PHASE, DPDT, 380-500 VAC, 50/60 HZ, 230 VAC SWITCHING, DIN RAIL MOUNT, (0028411)
    ✓ IN STOCK!
    $171.00 Buy Surplus As Low As $103.00
    $103.00
    Repair Yours $200.00
    GENERAL ELECTRIC NGV13B29A

    GENERAL ELECTRIC

    NGV13B29A

    AC UNDER VOLTAGE RELAY, TYPE NGV, 120V/50-60HZ, 80-120V DROPOUT CALIBRATION, 2.0 AMP
    ✓ IN STOCK!
    $2,575.00 Buy Surplus As Low As $1,545.00
    $1,545.00
    Repair Yours $1,283.00
    S&C ELECTRIC 192322-LB

    S&C ELECTRIC

    192322-LB

    FUSE, MEDIUM VOLTAGE FUSE,14400 VOLTAGE
    $4,954.00 Buy Surplus As Low As $2,973.00
    $2,973.00
    Repair Yours $2,468.00
    S&C ELECTRIC 464100R3

    S&C ELECTRIC

    464100R3

    DISCONTINUED BY MANUFACTURER, FUSE, MEDIUM VOLTAGE FUSE,AIC RATING 33.5KA@34.5KV, MIN AMP100, 34500 VOLTAGE
    Buy Surplus As Low As $3,000.00
    $3,000.00
    S&C ELECTRIC 92544R3-D

    S&C ELECTRIC

    92544R3-D

    POWER FUSE, SMD-20 CUTOUT, MOUNTING 34.5KV VOLTAGE, POLE-TOP, WITH PAR GROVVOVE CONNECTION, UPPER/LOWER END FITTING
    $1,515.00 Buy Surplus As Low As $909.00
    $909.00
    Repair Yours $755.00
    EATON CORPORATION C323PN12C6

    EATON CORPORATION

    CUTLER HAMMER

    C323PN12C6

    DISCONTINUED BY MANUFACTURER, RELAY / PHASE MONITOR, 440 V
    ✓ IN STOCK!
    Buy Surplus As Low As $977.00
    $977.00
    Repair Yours $640.00
    EATON CORPORATION D64RPB6

    EATON CORPORATION

    CUTLER HAMMER

    D64RPB6

    RELAY, GROUND FAULT, 10MA-6.4 AMP RANGE, 24-250 AC/DC
    ✓ IN STOCK!
    $18.00 Buy Surplus As Low As $9.35
    $9.35
    MEGACON KCG598E 380-415V/220-240V/150-300V/3R/6O

    MEGACON

    KCG598E 380-415V/220-240V/150-300V/3R/6O

    LOSS OF MAINS PROTECTION RELAY, THREE PHASE, 4-WIRE, AUXILIARY VOLTAGE: 380-415 VAC (50/60 HZ), INPUT 1: 220-240 V, RANGE: 150-300 V, OUTPUT 1: 3 RELAY, OUTPUT 2: 6 OPTO, IP21
    ✓ IN STOCK!
    $1,621.00 Buy Surplus As Low As $1,232.00
    $1,232.00
    Repair Yours $808.00
    LITTELFUSE 201A-9

    LITTELFUSE

    201A-9

    PHASE RELAY, SPDT, 190-480V, SOCKET; PRODUCT RANGE:201A SERIES; CONTACT CONFIGURATION:SPDT; CONTACT CURRENT:10A; RELAY MOUNTING:SOCKET; RELAY TERMINALS:QUICK CONNECT; SWITCHING VOLTAGE MAX:2 ...
    $168.00 Buy Surplus As Low As $101.00
    $101.00
    Repair Yours $200.00
    LITTELFUSE 201A-AU-OT

    LITTELFUSE

    201A-AU-OT

    3-PH PLUG-IN VM/190-480V/ADJ./ BOX
    $212.00 Buy Surplus As Low As $128.00
    $128.00
    Repair Yours $200.00
    LITTELFUSE 35020028

    LITTELFUSE

    35020028

    3-PHASE VOLT MON/ 190-240V/ AD/ BOX
    $359.00 Buy Surplus As Low As $216.00
    $216.00
    Repair Yours $200.00
    LITTELFUSE 35040026

    LITTELFUSE

    35040026

    3-PHASE VOLT MON/ 380-480V/ AD/ BOX
    $359.00 Buy Surplus As Low As $216.00
    $216.00
    Repair Yours $200.00
    LITTELFUSE 460-14

    LITTELFUSE

    460-14

    PHASE RELAY, SPST, 190-480V, DIN RAIL; PRODUCT RANGE:460 SERIES; CONTACT CONFIGURATION:SPST-NO, SPST-NC; CONTACT CURRENT:8A; RELAY MOUNTING:DIN RAIL, PANEL; RELAY TERMINALS:SCREW; SWITCHING ...
    $223.00 Buy Surplus As Low As $134.00
    $134.00
    Repair Yours $200.00
    LITTELFUSE 460-15

    LITTELFUSE

    460-15

    3-PHASE VM/ 190-480V/ ADJ VUB/ BOX
    $246.00 Buy Surplus As Low As $148.00
    $148.00
    Repair Yours $200.00
    LITTELFUSE 460L-OEM

    LITTELFUSE

    460L-OEM

    3-PH VOLT.MON./190-480V/ADJ.RD/ BULK
    $2,829.00 Buy Surplus As Low As $1,698.00
    $1,698.00
    Repair Yours $1,410.00
    LITTELFUSE RM2000

    LITTELFUSE

    RM2000

    REMOTE MONITOR FOR 1 DEVICE/ R/ BOX
    $1,820.00 Buy Surplus As Low As $1,092.00
    $1,092.00
    Repair Yours $907.00
    MATSUSHITA ELECTRIC ST1-DC5V

    MATSUSHITA ELECTRIC

    PANASONIC

    ST1-DC5V

    POWER RELAY; RELAY TYPE:PCB; COIL VOLTAGE VDC NOM:5V; CONTACT CURRENT MAX:8A; CONTACT VOLTAGE AC NOM:380V; CONTACT VOLTAGE DC NOM:250V; COIL RESISTANC
    ✓ IN STOCK!
    $20.00 Buy Surplus As Low As $12.00
    $12.00
    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!
    $240.00 Buy New $240.00
    $120.00
    Repair Yours $200.00
    SIEMENS 3RR2242-1FW30

    SIEMENS

    3RR2242-1FW30

    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
    ✓ IN STOCK!
    $822.00 Buy Surplus As Low As $543.00
    $543.00
    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!
    $1,938.00 Buy Surplus As Low As $1,473.00
    $1,473.00
    Repair Yours $966.00
    SIEMENS 3UG46182CR20

    SIEMENS

    3UG46182CR20

    DIGITAL MONITORING RELAY FOR 3-PHASE VOLTAGE WITH N-CONDUCTOR AUTOM. PHASE SEQUENCE CORRECTION PHASE FAILURE 3 X 90 TO 400 V 50 TO 60 HZ AC UNDERVOLTAGE AND OVERVOLTAGE 90-400 V HYSTERESIS 1 ...
    ✓ IN STOCK!
    $372.00 Buy Surplus As Low As $224.00
    $224.00
    Repair Yours $200.00
    SIEMENS 3RH2122-2BB40

    SIEMENS

    3RH2122-2BB40

    CONTACTOR RELAY, 10 AMP, 24 VDC, 6 KV, 2NO + 2NC, SIZE: S00, SPRING-TYPE TERMINAL, IP20, SUCCESSOR FOR 3RH1122-2BB40
    ✓ IN STOCK!
    $155.00 Buy Surplus As Low As $94.00
    $94.00
    Repair Yours $200.00
    SIEMENS 3RR2141-2AA30

    SIEMENS

    3RR2141-2AA30

    MONITORING RELAY, CAN BE MOUNTED TO CONTACTOR 3RT2, SIZE S00 BASIC, ANALOG ADJUSTMENT APPARENT CURRENT MONITORING 1.6-16 A, 20-400 HZ, 2-PHASE SUPPLY 24 V AC/DC 1 CHANGE-OVER CONTACT MONITOR ...
    $272.00 Buy Surplus As Low As $164.00
    $164.00
    Repair Yours $200.00
    GENERAL ELECTRIC 12CEY52A2D

    GENERAL ELECTRIC

    12CEY52A2D

    MHO DISTANCE RELAY, LOSS EXCITATION, 120 VAC, 5 AMP, 60 CYCLES
    Buy Surplus As Low As $1,800.00
    $1,800.00
    Repair Yours $1,494.00
    SYMCOM 460

    SYMCOM

    460

    THREE PHASE ELECTRIC MOTOR PROTECTOR, MOTOR SAVER, 190-480VAC, 50-60HZ, UNBALANCING TRIP: 2-8% ADJUSTABLE, TRIP DELAY: 1-30 SECONDS ADJUSTABLE, RESTART DELAY TIME AFTER A FAULT OR COMPLETE P ...
    ✓ IN STOCK!
    $185.00 Buy Surplus As Low As $111.00
    $111.00
    GENERAL ELECTRIC 12IFC77A1A

    GENERAL ELECTRIC

    12IFC77A1A

    DISCONTINUED BY MANUFACTURER, RELAY OVERCURRENT, INVERSE, 50/60 HZ, 1 - 12 AMPS
    ✓ IN STOCK!
    Buy Surplus As Low As $900.00
    $900.00
    Repair Yours $747.00
    ASEA BROWN BOVERI CM-MPS.41.S

    ASEA BROWN BOVERI

    CM-MPS.41.S

    MONITORING RELAY, 3 PHASE, 0.01-30S, 300-500 VAC, 50/60 HZ, 1SVR730884R3300
    ✓ IN STOCK!
    $370.00 Buy Surplus As Low As $222.00
    $222.00
    Repair Yours $200.00
    SIEMENS 3UG48151AA40

    SIEMENS

    3UG48151AA40

    DIGITAL MONITORING RELAY 3-PHASE SUPPLY VOLTAGE FOR IO-LINK 50...60 HZ AC 3 X 160 TO 690 V PHASE SEQUENCE, PHASE FAILURE PHASE ASYMMETRY UNDERVOLTAGE AND OVERVOLTAGE HYSTERESIS 1-20 V LINE S ...
    ✓ IN STOCK!
    $400.00 Buy Surplus As Low As $240.00
    $240.00
    Repair Yours $200.00
    EXTECH GRT300

    EXTECH

    GRT300

    4-WIRE, EARTH GROUND RESISTANCE TESTER
    $1,436.00 Buy Surplus As Low As $862.00
    $862.00
    Repair Yours $716.00
    MACROMATIC PMPU-FA8X

    MACROMATIC

    PMPU-FA8X

    3-PHASE MONITOR RELAY, 190-500 VAC, 8 PIN PLUG-IN 5 AMP SPDT AND SPNO RELAY, PHASE LOSS, REVERSAL, UNBALANCE, OVER/UNDER VOLTAGE - FIXED
    $357.00 Buy New $357.00
    $215.00
    EMOTRON EL-FI-M10

    EMOTRON

    EL-FI-M10

    DISCONTINUED BY MANUFACTURER, SHAFT POWER MONITOR, 1.5AMP, 100-690VAC, 50/60HZ, REPLACEMENT: EL-FI-M20
    Buy Surplus As Low As $1,050.00
    $1,050.00
    Repair Yours $880.00
    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
    Buy Surplus As Low As $139.00
    $139.00
    Repair Yours $200.00
    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 $666.00
    $666.00
    Repair Yours $553.00
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