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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 451-500 of 845.
    MARSH BELLOFRAM UOA-120-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-120-ALA

    VOLTAGE MONITORING RELAY, UOA SERIES, 97-130 VAC DROP-OUT, 102-135 VAC PICK-UP, 5 V HYSTERESIS, DPDT, LOCKNUT, 8-PIN OCTAL
    ✓ IN STOCK!
    $287.68 Buy New $287.68
    $172.61
    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!
    $265.00 Buy New $265.00
    $155.00
    Repair Yours $300.00
    MARSH BELLOFRAM SUA-440-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SUA-440-ASA

    MONITORING RELAY, OPERATING VOLTAGE 430-480 ADJUSTABLE, 10 AMPS, ADJUSTMENT SCREW, OUTPUT RESISTIVE @ 240 VAC, 8 PIN OCTAL, SUA SERIES
    ✓ IN STOCK!
    $229.00 Buy New $229.00
    $144.32
    Repair Yours $300.00
    MARSH BELLOFRAM PBC-480-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBC-480-ALE

    PHASE VOLTAGE MONITOR,3 PHASE, 480 VAC, DPDT OUTPUT RELAY
    ✓ IN STOCK!
    $767.00 Buy New $767.00
    $226.76
    Repair Yours $300.00
    MARSH BELLOFRAM PBC-120/208-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBC-120/208-ALE

    PHASE VOLTAGE MONITORS, WYE, ADJUSTABLE 3 PHASE-VOLTAGE MONITOR
    ✓ IN STOCK!
    $710.00 Buy New $710.00
    $345.17
    Repair Yours $339.00
    MARSH BELLOFRAM SLU-0201

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLU-0201

    PHASE MONITOR, RAPID CYCLE LOCKOUT, DIAGNOSTIC LED, UNIV PH. MON/RLY AUTO RESET RAPID CYCLE LK LED DIAG.
    ✓ IN STOCK!
    $200.00 Buy New $200.00
    $120.00
    STRUTHERS DUNN RELAYS A214XBX170

    STRUTHERS DUNN RELAYS

    A214XBX170

    GENERAL PURPOSE, GROUND FAULT INTERRUPT (GFI) RELAY, 115 VAC, 50 HZ8 PIN
    ✓ IN STOCK!
    $172.80 Buy New $172.80
    $71.80
    Repair Yours $300.00
    RADWELL VERIFIED SUBSTITUTE PMDU-SUB

    RADWELL VERIFIED SUBSTITUTE

    PMDU-SUB

    SUBSTITUTE FOR MACROMATIC PMDU , 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!
    $125.00 Buy New $125.00
    Repair Yours $300.00
    GRAINGER 6X555

    GRAINGER

    GRAINGER APPROVED VENDOR

    6X555

    RELAY 35AMP 1POLE N/C POTENTIAL RELAY
    ✓ IN STOCK!
    $25.92 Buy Surplus As Low As $10.71
    $10.71
    Repair Yours Contact Us
    TIME MARK CORP 20

    TIME MARK CORP

    20

    3-PHASE-MONITORS,WITH TRIP AND RESTART DELAYS, 190-480VAC, SIZE 3.91IN X 2.2IN X 2.3IN
    ✓ IN STOCK!
    $154.00 Buy New $154.00
    $76.00
    Repair Yours Contact Us
    GAST MANUFACTURING AJ135G

    GAST MANUFACTURING

    AJ135G

    FILTER
    ✓ IN STOCK!
    $162.00 Buy New $162.00
    $107.00
    ASEA BROWN BOVERI 64418ZA

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    64418ZA

    RELAY 300VDC/1AMP
    ✓ IN STOCK!
    $2,836.80 Buy New $2,836.80
    $1,178.77
    Repair Yours $1,029.87
    MARSH BELLOFRAM UOA-240-AKA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-240-AKA

    UNDER VOLTAGE MONITOR, UOA SERIES, 205-250 VAC DROP-OUT, 215-260 VAC PICK-UP, 10 V HYSTERESIS, KNOB ADJUSTMENT, 8 PIN
    ✓ IN STOCK!
    $362.27 Buy New $362.27
    $217.36
    Repair Yours $300.00
    MARSH BELLOFRAM UOA-120-AKA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-120-AKA

    VOLTAGE MONITORING RELAY, UOA SERIES, 97-130 VAC DROP-OUT, 102-135 VAC PICK-UP, KNOB ADJUSTMENTS, DPDT, 8-PIN OCTAL
    ✓ IN STOCK!
    $212.00 Buy New $212.00
    $130.83
    Repair Yours $300.00
    MARSH BELLOFRAM SUA-380-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SUA-380-ASA

    PHASE MONITOR RELAY,
    ✓ IN STOCK!
    $341.00 Buy New $341.00
    $159.42
    Repair Yours $300.00
    MARSH BELLOFRAM PRA-100-AFN-400

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PRA-100-AFN-400

    PHASE SEQUENCE MONITOR RELAY 10AMP 208-480VAC
    ✓ IN STOCK!
    $51.07 Buy New $51.07
    $39.29
    Repair Yours $300.00
    MARSH BELLOFRAM PBD-120-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBD-120-ALE

    PHASE SEQUENCE AND VOLTAGE MONITOR, SERIES PBD, NO OF PHASES3, VOLTAGE SUPPORTED 120 VOLTS, HI PWR (OVER VLTG) TRIP , LO PWR (UNDER VLTG) TRIP, TYPE OF DISPLAY LED STATUS INDICATOR
    ✓ IN STOCK!
    $856.00 Buy New $856.00
    $565.00
    Repair Yours $427.00
    MARSH BELLOFRAM PBC-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBC-440-ALE

    PHASE VOLTAGE MONITORS, 3 PHASE-VOLTAGE MONITOR, DELTA, 390V-540V
    ✓ IN STOCK!
    $720.00 Buy New $720.00
    $271.12
    Repair Yours $300.00
    MARSH BELLOFRAM PBC-120-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBC-120-ALE

    PHASE VOLTAGE MONITORS
    ✓ IN STOCK!
    $707.00 Buy New $707.00
    $538.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR550826R9100

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR550826R9100

    RELAY, PHASE SEQUENCE MONITORING, 200-500 V, 50/60 HZ, SCREW CLAMP, DIN RAIL MOUNT, 3 PHASE, SPDT , 1SVR550826R9100
    ✓ IN STOCK!
    $98.00 Buy Surplus As Low As $54.00
    $54.00
    Repair Yours $300.00
    CR MAGNETICS CR5395-LH-ACV-101-B-CD-ELR-R

    CR MAGNETICS

    CR5395-LH-ACV-101-B-CD-ELR-R

    DC CURRENT SENSING RELAY, SUPPLY VOLTAGE 85-265VAC, TRIP RANGE 10-100AMPS, TIME DELAY 2-25 SEC, CALIBRATED DIAL, CRDCS-050 REMOTE DC SENSOR
    ✓ IN STOCK!
    $326.00 Buy New $326.00
    $130.77
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CM1F-D-12V

    MATSUSHITA ELECTRIC

    AROMAT

    CM1F-D-12V

    RELAY, 35A, 12V, 5 PIN
    ✓ IN STOCK!
    $14.40 Buy Surplus As Low As $6.65
    $6.65
    Repair Yours $300.00
    EZ DIGITAL FG7005C

    EZ DIGITAL

    FG7005C

    SWEEP FUNCTION GENERATOR, LED DISPLAY, BUILT-IN FREQUENCY COUNTER, 0.05 HZ TO 5 MHZ IN 7 RANGE, 2% OF FULL SCALE ACCURACY, 115-230 V, 15 WATT
    ✓ IN STOCK!
    $575.00 Buy Surplus As Low As $180.00
    $180.00
    Repair Yours $300.00
    SCHWEITZER ENGINEERING SEL-221G-221G05-4256MHGB

    SCHWEITZER ENGINEERING

    SEL-221G-221G05-4256MHGB

    DISCONTINUED BY MANUFACTURER, PHASE/GROUND DISTANCE RELAY, POWER SUPPY 125VAC/DC 14W, LOGIC INPUT 125VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $1,836.64
    $1,836.64
    Repair Yours $1,524.41
    ASEA BROWN BOVERI WLM945A5S

    ASEA BROWN BOVERI

    SSAC

    WLM945A5S

    SSAC, ASEA BROWN BOVERI, WLM945A5S, VOLTAGE MONITOR THREE PHASE, 400-480VAC, 5SEC TRIP DELAY, 5SEC RESTART DELAY,
    ✓ IN STOCK!
    $162.66 Buy Surplus As Low As $85.61
    $85.61
    Repair Yours $300.00
    MACROMATIC VMP480A

    MACROMATIC

    VMP480A

    VOLTAGE MONITOR RELAY FOR 480 VAC, 10 AMP RELAY, DPDT, ADJ PICK UP, FIXED DROP OUT AND TRIP DELAY, PLUG-IN
    ✓ IN STOCK!
    $140.00 Buy New $140.00
    $107.00
    Repair Yours $300.00
    INGERSOLL RAND RLY2463

    INGERSOLL RAND

    TRANE

    RLY2463

    24V 3A DPDT GEN. PURPOSE RELAY
    ✓ IN STOCK!
    $64.00 Buy Surplus As Low As $38.41
    $38.41
    Repair Yours Contact Us
    MOTOR PROTECTION ELEC. INC 002-480-123

    MOTOR PROTECTION ELEC. INC

    002-480-123

    DISCONTINUED BY MANUFACTURER, PHASE MONITOR , SUGGESTED REPLACEMENT IS 001-DVM-DR
    ✓ IN STOCK!
    Buy Surplus As Low As $88.00
    $88.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR550824R9100

    ASEA BROWN BOVERI

    1SVR550824R9100

    PHASE MONITORING RELAY, SINGLE FUNCTION, CM-PFE SERIES, 3 PHASE,4 AMP, 28-440 VAC, 50/60 HZ, 1 C/O (SPDT) OUTPUT, SCREW TYPE TERMINALS, -20 TO +85 DEGREES C, IP20/50, (CM-PFE)
    ✓ IN STOCK!
    $142.00 Buy Surplus As Low As $56.40
    $56.40
    Repair Yours $300.00
    ASEA BROWN BOVERI CM-ESS.1S

    ASEA BROWN BOVERI

    CM-ESS.1S

    VOLTAGE MONITORING RELAY, SPDT, 4 AMP, 250 VAC, 750 MW, 81-12 AWG, SCREW TYPE TERMINALS, DIN RAIL MOUNT, -40 TO +85 DEGREE C, (1SVR730830R0300)
    ✓ IN STOCK!
    $708.35 Buy Surplus As Low As $425.01
    $425.01
    Repair Yours $300.00
    KEARNEY NATIONAL INC 22.017-04-600-A/4H

    KEARNEY NATIONAL INC

    22.017-04-600-A/4H

    DISCONTINUED BY MANUFACTURER, FAULT INDICATOR CRAB, 600AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $13.79
    $13.79
    TELE CONTROLS G2PM400VSY20 24-240VAC/DC

    TELE CONTROLS

    G2PM400VSY20 24-240VAC/DC

    VOLTAGE MONITORING RELAY, GAMMA SERIES, DPDT, 3 AMP, ZOOM VOLTAGE 24 TO 240 VAC/DC, SCREW TERMINALS, DIN RAIL MOUNT
    ✓ IN STOCK!
    $298.70 Buy New $298.70
    $221.00
    Repair Yours $200.00
    MARSH BELLOFRAM SLU-0200

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLU-0200

    PHASE MONITORING RELAY, SPDT, 200-500VAC; PRODUCT RANGE:-; CONTACT CONFIGURATION:SPDT; CONTACT CURRENT:10A; RELAY MOUNTING:SOCKET; RELAY TERMINALS:PLUG IN; SWITCHING VOLTAGE MAX:240VAC; SUPP ...
    ✓ IN STOCK!
    $287.50 Buy New $287.50
    $172.50
    Repair Yours $300.00
    MARSH BELLOFRAM SLD-230-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLD-230-ALE

    PHASE VOLTAGE MONITOR, 208/240 VAC, 185-230 V UNDER VOLTAGE DROPOUT RANGE, 3 VA, 5 VAC HYSTERESIS, DPDT OUTPUT
    ✓ IN STOCK!
    $828.00 Buy New $828.00
    $514.14
    Repair Yours $377.00
    MARSH BELLOFRAM SLA-460-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-460-AFE

    PHASE MONITOR/RELAY, 460VAC , 3 PHASE
    ✓ IN STOCK!
    $806.00 Buy New $806.00
    $306.37
    Repair Yours $303.32
    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 $186.78
    $186.78
    Repair Yours $300.00
    GENERAL ELECTRIC 12IGCV51A5A

    GENERAL ELECTRIC

    MULTILIN

    12IGCV51A5A

    DISCONTINUED BY MANUFACTURER, RELAY VOLTAGE CONTROL, 70-100 V, 4-16 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $1,793.52
    $1,793.52
    Repair Yours $1,488.62
    GENERAL ELECTRIC 12IAV51A1A

    GENERAL ELECTRIC

    MULTILIN

    12IAV51A1A

    DISCONTINUED BY MANUFACTURER, POWER DIRECTIONAL RELAY, IAV, 115 V AC, 60 HZ, 60 CYCLES
    ✓ IN STOCK!
    Buy Surplus As Low As $693.88
    $693.88
    Repair Yours $560.00
    GENERAL ELECTRIC 12IAC53B104A

    GENERAL ELECTRIC

    12IAC53B104A

    DISCONTINUED BY MANUFACTURER, RELAY, TIME, OVERCURRENT,TIME OVERCURRENT RELAY
    ✓ IN STOCK!
    Buy Surplus As Low As $585.19
    $585.19
    Repair Yours $539.67
    GENERAL ELECTRIC 12CEY51A1D

    GENERAL ELECTRIC

    12CEY51A1D

    DISCONTINUED BY MANUFACTURER, DISTANCE RELAY, 5-AMP, 120-VOLTS, 60-CYCLE
    ✓ IN STOCK!
    Buy Surplus As Low As $1,125.00
    $1,125.00
    Repair Yours $1,078.24
    GENERAL ELECTRIC 12CEB51B1A

    GENERAL ELECTRIC

    12CEB51B1A

    DISCONTINUED BY MANUFACTURER, OFFSET MHO BLOCKING RELAY, 120 V, 5 AMP, 60 CYL, 0-4O OHMS
    ✓ IN STOCK!
    Buy Surplus As Low As $1,574.64
    $1,574.64
    Repair Yours $1,306.95
    WESTINGHOUSE 606B029A09

    WESTINGHOUSE

    606B029A09

    DISCONTINUED BY MANUFACTURER, AUXILIARY RELAY, 125 VDC, TYPE AR
    ✓ IN STOCK!
    Buy Surplus As Low As $135.60
    $135.60
    Repair Yours $300.00
    WESTINGHOUSE 290B346A09

    WESTINGHOUSE

    290B346A09

    DISCONTINUED BY MANUFACTURER, TRANSFORMER DIFFERENTIAL RELAY, TYPE HU, 60 HZ, 0.2-2 AMPS
    ✓ IN STOCK!
    Buy Surplus As Low As $1,928.57
    $1,928.57
    Repair Yours $1,600.71
    SIEMENS 3RH2122-1AK60

    SIEMENS

    3RH2122-1AK60

    RELAY, CONTACTOR RELAY, 2 NO/2 NC, 120 VAC, 10 AMPS, SCREW, DIN RAIL MOUNT, REPLACES 3RH1122-1AK60
    ✓ IN STOCK!
    $126.10 Buy Surplus As Low As $75.66
    $75.66
    Repair Yours $300.00
    SIEMENS 3RH2262-1BB40

    SIEMENS

    3RH2262-1BB40

    CONTACTOR RELAY, AUXILIARY, 10 AMP, 24 VDC, 6 NO + 2 NC, CAPTIVE AUXILIARY SWITCH, SIZE S00, SCREW TERMINAL, SUCCESSOR FOR 3RH1262-1BB40
    ✓ IN STOCK!
    $268.80 Buy Surplus As Low As $161.28
    $161.28
    Repair Yours $300.00
    WESTINGHOUSE 290B038A09

    WESTINGHOUSE

    290B038A09

    DISCONTINUED BY MANUFACTURER, REVERSE POWER RELAY, TYPE CRN-1, 5 AMP, 120 VAC, 0.2-2 AMP RANGE
    ✓ IN STOCK!
    Buy Surplus As Low As $1,254.84
    $1,254.84
    Repair Yours $1,225.24
    ICM ICM402

    ICM

    ICM402

    LINE VOLTAGE MONITOR, THREE-PHASE, 30 AMP, 190-600VAC
    ✓ IN STOCK!
    $124.00 Buy Surplus As Low As $69.00
    $69.00
    MACROMATIC PMPU

    MACROMATIC

    PMPU

    MONITOR RELAY, 3-PHASE, 190-500 VAC, 8 PIN PLUG-IN, 10 AMP SPDT RELAY, PHASE LOSS, REVERSAL FIXED, UNBALANCE, OVER/UNDER VOLTAGE, ADJUSTABLE
    ✓ IN STOCK!
    $246.88 Buy New $246.88
    $148.13
    Repair Yours $300.00
    BENDER RCM465Y-13

    BENDER

    RCM465Y-13

    DISCONTINUED BY MANUFACTURER,GROUND FAULT RELAY, 30-300MA ,RESPONSE 0-1S, 90-132V
    ✓ IN STOCK!
    Buy Surplus As Low As $536.79
    $536.79
    Repair Yours $424.00
    TE CONNECTIVITY 252-PVRU-PQBX-C6

    TE CONNECTIVITY

    CROMPTON INSTRUMENTS

    252-PVRU-PQBX-C6

    PHASE LOSS RELAY, 5 AMP, 120 VAC, 60 HZ, DIN RAIL MOUNT
    ✓ IN STOCK!
    $315.00 Buy Surplus As Low As $189.00
    $189.00
    Repair Yours $300.00
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