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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 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
    MARSH BELLOFRAM SLD-440-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLD-440-ASA

    PHASE VOLTAGE MONITOR, SLD SERIES, 440/480 VAC, 370-460 V UNDERVOLTAGE DROPOUT RANGE, 3 VA, 10 VA, 8 PIN
    ✓ IN STOCK!
    $754.00 Buy New $754.00
    $255.87
    Repair Yours $300.00
    MARSH BELLOFRAM SLB-400-ALEA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLB-400-ALEA

    PHASE UNBALANCE & LOSS & PHASE SEQUENCE MONITOR/RELAY, LED STATUS INDICATOR, 3.25 IN X 4 IN X 3 IN, MOUNTING:SURFACE, OUTPUT RELAY:SPDT
    ✓ IN STOCK!
    Buy Surplus As Low As $157.57
    $157.57
    Repair Yours $300.00
    MARSH BELLOFRAM SLA-230-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-230-ALA

    PHASE MONITOR RELAY, DPDT, 10A, 240VAC; PRODUCT RANGE:SLA SERIES; CONTACT CONFIGURATION:DPDT; CONTACT CURRENT:10A; RELAY MOUNTING:SOCKET; RELAY TERMINALS:PLUG IN; SWITCHING VOLTAGE MAX:240VA ...
    ✓ IN STOCK!
    $241.33 Buy New $241.33
    $144.80
    Repair Yours $300.00
    MARSH BELLOFRAM SLA-120-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-120-ASA

    PHASE MONITOR/RELAY, 3-PHASE, 95-130V ADJ., 10A, PLUG-IN, SLA SERIES, 120VAC, SPDT (1 FORM C)
    ✓ IN STOCK!
    $488.06 Buy New $488.06
    $292.84
    Repair Yours $300.00
    MARSH BELLOFRAM CMB-120-AFA-10

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMB-120-AFA-10

    CURRENT MONITORING RELAY, CMB SERIES, AC GO/NO-GO, 120 V AC, 50/60 HZ, 10 AMPS, SINGLE POLE DOUBLE THROW, 8-PIN OCTAL TERMINATION
    ✓ IN STOCK!
    $209.00 Buy New $209.00
    $124.00
    Repair Yours $300.00
    MARSH BELLOFRAM CDD-120-ALE-20

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CDD-120-ALE-20

    UNIVERSAL DC CURRENT MONITOR RELAY,
    ✓ IN STOCK!
    $504.00 Buy New $504.00
    $333.00
    Repair Yours $300.00
    MARSH BELLOFRAM CMU-120-ASA-1

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMU-120-ASA-1

    OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMU MODEL, 10 AMPS RES @ 120 V AC OUTPUT, DPDT, 120 V AC/DC CONTROL, 50/60 HZ, CURRENT TRIP POINTS - 1-5 AMP, 11-PIN, PLUG-IN MOUNT
    ✓ IN STOCK!
    $582.00 Buy New $582.00
    $443.00
    Repair Yours $200.00
    GENERAL ELECTRIC 12IFC66AD1A

    GENERAL ELECTRIC

    12IFC66AD1A

    DISCONTINUED BY MANUFACTURER, PROT RELAY, LONG TIME OVERCURRENT, 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $173.18
    $173.18
    MATSUSHITA ELECTRIC CB1A-T-M-24V

    MATSUSHITA ELECTRIC

    AROMAT

    CB1A-T-M-24V

    AUTOMOTIVE RELAY,CB RELAY(AUTOMO
    ✓ IN STOCK!
    $15.23 Buy Surplus As Low As $9.14
    $9.14
    Repair Yours $300.00
    CR MAGNETICS CR5395-EL-24D-101-X-CD-ELR-I

    CR MAGNETICS

    CR5395-EL-24D-101-X-CD-ELR-I

    DC CURRENT SENSING RELAY, SOLID CORE INTERNAL CT, DC FREQ ONLY, 24 VDC +/- 10% POWER SUPPLY, UNDERCURRENT DETECTION, NON-LATCHING, NO TIME DELAY, 10 - 100 ADC ADJUSTABLE TRIP RANGE, DPST FOR ...
    ✓ IN STOCK!
    $135.00 Buy New $135.00
    $103.30
    Repair Yours $300.00
    MACROMATIC PLP575

    MACROMATIC

    PLP575

    3-PHASE MONITOR RELAY, 575 VAC, 8 PIN SPDT 10 AMP RELAY, PHASE LOSS, PHASE REVERSAL - FIXED
    ✓ IN STOCK!
    $122.75 Buy New $122.75
    $81.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 290B658A09

    ASEA BROWN BOVERI

    290B658A09

    DISCONTINUED BY MANUFACTURER, DIFFERENTIAL RELAY, KD3, SINGLE PHASE, DISTANCE, 290B658R09
    ✓ IN STOCK!
    Buy Surplus As Low As $1,033.12
    $1,033.12
    Repair Yours $952.77
    LITTELFUSE PLM9405

    LITTELFUSE

    PLM9405

    PHASE RELAY, SPDT, 400-480V, SOCKET; PRODUCT RANGE:PLM SERIES; CONTACT CONFIGURATION:SPDT; CONTACT CURRENT:10A; RELAY MOUNTING:SOCKET; RELAY TERMINALS:QUICK CONNECT; SWITCHING VOLTAGE MAX:24 ...
    ✓ IN STOCK!
    $223.74 Buy Surplus As Low As $134.24
    $134.24
    Repair Yours $300.00
    GENERAL ELECTRIC 12HFC21B2A

    GENERAL ELECTRIC

    12HFC21B2A

    DISCONTINUED BY MANUFACTURER, RELAY, OVERCURRENT, 2-50AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $163.05
    $163.05
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CB1A-R-24V

    MATSUSHITA ELECTRIC

    AROMAT

    CB1A-R-24V

    AUTOMOTIVE RELAYS 20AMP 24VDC 1 FORM A
    ✓ IN STOCK!
    $10.60 Buy Surplus As Low As $6.36
    $6.36
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CB1-T-R-12V

    MATSUSHITA ELECTRIC

    AROMAT

    CB1-T-R-12V

    AUTOMOTIVE RELAY, HIGH POWER, SPDT, 40 AMP, 12 V, 85C 185F
    ✓ IN STOCK!
    $8.93 Buy Surplus As Low As $5.36
    $5.36
    Repair Yours Contact Us
    ASEA BROWN BOVERI 1963190

    ASEA BROWN BOVERI

    1963190

    ABB, 1963190, SV VOLTAGE RELAY, 120VAC, 60HZ, SETTINGS 70-150
    ✓ IN STOCK!
    $785.71 Buy Surplus As Low As $355.43
    $355.43
    Repair Yours $300.00
    GENERAL ELECTRIC 12HGA14ALS

    GENERAL ELECTRIC

    12HGA14ALS

    AUXILARY RELAY, 125VDC, 4 SECOND
    ✓ IN STOCK!
    $156.22 Buy Surplus As Low As $74.01
    $74.01
    Repair Yours $300.00
    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
    SIEMENS 3TX7115-5DC03C

    SIEMENS

    3TX7115-5DC03C

    PLUG-IN RELAY, BASIC 8-PIN, SQUARE BASE DPDT, 16A, 24VDC, USES SOCKET 3TX7144-1E4 OR 3TX7144-4E4 , 3TX71155DC03C
    ✓ IN STOCK!
    $55.00 Buy Surplus As Low As $19.68
    $19.68
    Repair Yours $300.00
    SIEMENS 3TX71155DC13C

    SIEMENS

    3TX71155DC13C

    PLUG-IN RELAY, BASIC 8-PIN, SQUARE BASE DPDT, 10A, 24VAC, USES SOCKET 3TX7144-1E4 OR 3TX7144-4E4 , 3TX71155DC13C
    ✓ IN STOCK!
    $65.00 Buy Surplus As Low As $50.00
    $50.00
    Repair Yours $300.00
    GENERAL ELECTRIC 12IFC77A2A

    GENERAL ELECTRIC

    12IFC77A2A

    RELAY ,OVERCURRENT EXTREMELY INVERSE, 50/60 HTZ, 2-50 AMPS
    ✓ IN STOCK!
    $1,428.57 Buy Surplus As Low As $475.69
    $475.69
    Repair Yours $461.79
    SIEMENS 3TX7015-1BM02

    SIEMENS

    3TX7015-1BM02

    DISCONTINUED BY MANUFACTURER, INPUT COUPLER, W/ PLUG-IN RELAY, SPRING-TYPE TERMINAL, 24VDC, 50HZ, 0.5W
    ✓ IN STOCK!
    $49.00 Buy Surplus As Low As $23.09
    $23.09
    Repair Yours $300.00
    SIEMENS 3RK3221-2AA10

    SIEMENS

    3RK3221-2AA10

    MSS EXP. MOD., 4/8 FDI, 1/2 FDO (RELAY), CONTROLS MSS MODULAR SAFETY RELAYS, CONTROL PRODUCTS , 3RK3221-2AA10
    ✓ IN STOCK!
    $1,002.00 Buy Surplus As Low As $519.00
    $519.00
    Repair Yours $431.00
    INGERSOLL RAND RLY0983

    INGERSOLL RAND

    TRANE

    RLY0983

    PILOT CONTROL RELAY, 120 VOLT AC, 50/60 HZ, 24 VOLT COIL, 6 BLADE STYLE CONNECTIONS
    ✓ IN STOCK!
    $62.25 Buy Surplus As Low As $27.77
    $27.77
    Repair Yours $300.00
    ASEA BROWN BOVERI DDA803A-100/0.5

    ASEA BROWN BOVERI

    DDA803A-100/0.5

    RESIDUAL CURRENT DEVICE BLOCK, TYPE A, 400/415/690 VAC RATED VOLTAGE, RATED CURRENT: 100A, 50/60HZ, INSTANTANEOUS OPERATING CHARACTERISTIC
    ✓ IN STOCK!
    $1,642.10 Buy Surplus As Low As $822.44
    $822.44
    Repair Yours $608.22
    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!
    $192.00 Buy Surplus As Low As $107.00
    $107.00
    Repair Yours Contact Us
    ASEA BROWN BOVERI 1SVR730841R1400

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR730841R1400

    (PRICE/EA) CM-SRS.21S CURRENT MON. RELAY , 1SVR730841R1400
    ✓ IN STOCK!
    $347.00 Buy Surplus As Low As $163.00
    $163.00
    Repair Yours $300.00
    WIELAND SAP-1002

    WIELAND

    SCHLEICHER

    SAP-1002

    PHASE FAILURE MONITORING RELAY, 380-415VAC, 3AC, 50/60HZ
    ✓ IN STOCK!
    $133.00 Buy Surplus As Low As $67.00
    $67.00
    Repair Yours $300.00
    EATON CORPORATION PFR-WMA-105

    EATON CORPORATION

    MOELLER ELECTRIC

    PFR-WMA-105

    MOELLER PFR-WMA-105 MAGNETIC SCREEN
    ✓ IN STOCK!
    $354.00 Buy Surplus As Low As $270.00
    $270.00
    Repair Yours $200.00
    ASEA BROWN BOVERI 1SVR750488R8300

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR750488R8300

    3-PHASE MULTI-FUNCTIONAL MONITORING RELAY WITH SELECTABLE TRIP DELAY, 450 TO 720 VAC, 2 TO 4 A, 2CO-SPDT CONTACT, 450 TO 720 VAC V COIL
    ✓ IN STOCK!
    $565.00 Buy Surplus As Low As $300.78
    $300.78
    Repair Yours $300.00
    CR MAGNETICS CR7310-EH-120-.11-C-CD-ELR-R2

    CR MAGNETICS

    CR7310-EH-120-.11-C-CD-ELR-R2

    CR7310 - GROUND FAULT SENSING RELAY, SUPPLY VOLTAGE - 120 VAC, TRIP RANGE - 0.1 TO 1.0 AAC , TRIP ON DELAY - .1 TO 1 SEC, CALIBRATED DIAL, CRGFS-200 REMOTE CURRENT TRANSFORMER
    ✓ IN STOCK!
    $261.05 Buy New $261.05
    $142.81
    Repair Yours $200.00
    CR MAGNETICS CR7310-EH-120-.11-A-CD-ELR-I

    CR MAGNETICS

    CR7310-EH-120-.11-A-CD-ELR-I

    CR7310 - GROUND FAULT SENSING RELAY, SUPPLY VOLTAGE - 120 VAC, TRIP RANGE - 0.1 TO 1.0 AAC, TRIP ON DELAY - .5 TO 6 SEC, CALIBRATED DIAL, INTERNAL TRANSFORMER
    ✓ IN STOCK!
    $227.97 Buy New $227.97
    $91.19
    Repair Yours Contact Us
    DOLD BA9041

    DOLD

    BA9041

    DISCONTINUED BY MANUFACTURER, PHASE MONITORING RELAY, DPDT CONTACTS, 3PHASE, 400VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $130.15
    $130.15
    Repair Yours $300.00
    TITUS CCT-150

    TITUS

    CCT-150

    50 AMP SSR RELAY
    ✓ IN STOCK!
    $472.50 Buy Surplus As Low As $283.50
    $283.50
    Repair Yours $300.00
    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
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