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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 651-700 of 849.
    MARSH BELLOFRAM CMU-120-ASA-5

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMU-120-ASA-5

    UNDER CURRENT MONITOR, CMU SERIES, 120 VAC, PLUG-IN, 1 TO 5 AMP ADJUSTABLE CURRENT TRIP POINTS, 11 PIN
    ✓ IN STOCK!
    $387.00 Buy New $387.00
    $233.00
    Repair Yours $200.00
    MARSH BELLOFRAM CMU-120-ASE-5

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMU-120-ASE-5

    OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMU MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 120 V AC/DC, 50/60 HZ, SURFACE MOUNT ENCLOSURE, CURRENT TRIP POINT ...
    ✓ IN STOCK!
    $475.00 Buy New $475.00
    $324.90
    Repair Yours $237.00
    MARSH BELLOFRAM CMU-24-DSA-1

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMU-24-DSA-1

    OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMU MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 24 V AC/DC, 50/60 HZ, PLUG-IN ENCLOSURE, CURRENT TRIP POINTS - 0.2 ...
    ✓ IN STOCK!
    $409.00 Buy New $409.00
    $312.00
    Repair Yours $200.00
    MARSH BELLOFRAM CMB-120-AFA-1

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMB-120-AFA-1

    CURRENT MONITORING RELAY, CMB SERIES, AC GO/NO-GO, 120 V AC, 50/60 HZ, 1 AMPS, SINGLE POLE DOUBLE THROW, 8-PIN OCTAL TERMINATION
    ✓ IN STOCK!
    $187.00 Buy New $187.00
    $114.00
    Repair Yours Contact Us
    MARSH BELLOFRAM SLA-120-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-120-ALA

    PHASE SEQUENCE/LOSS MONITOR, 120V, LOCK SHAFT ADJUSTABLE, 11 PIN CIRCULAR BASE
    ✓ IN STOCK!
    $564.00 Buy New $564.00
    $339.00
    Repair Yours $276.00
    MARSH BELLOFRAM SLA-220-AFN

    MARSH BELLOFRAM

    ATC

    SLA-220-AFN

    DISCONTINUED BY MANUFACTURER, PHASE SEQUENCE, LOSS MONITOR
    ✓ IN STOCK!
    Buy Surplus As Low As $302.40
    $302.40
    Repair Yours $250.99
    MARSH BELLOFRAM SLA-230-ALER

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-230-ALER

    PHASE MONITOR/RELAY, PHASE SEQUENCE/LOSS MONITOR, 230V, LOCK SHAFT ADJ, SURFACE MOUNT, MANUAL RESET
    ✓ IN STOCK!
    $785.00 Buy New $785.00
    $472.00
    Repair Yours $381.00
    GENERAL ELECTRIC IC2820-D300B10

    GENERAL ELECTRIC

    IC2820-D300B10

    DISCONTINUED BY MANUFACTURER, FIELD LOSS RELAY, 600 VAC MAX, 10 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $480.00
    $480.00
    Repair Yours $399.00
    VERIVOLT ISOBLOCK I-FG-1C

    VERIVOLT

    ISOBLOCK I-FG-1C

    INLINE CURRENT SENSOR, 50 AMPS, 10 VOLTS
    ✓ IN STOCK!
    $273.00 Buy Surplus As Low As $208.00
    $208.00
    Repair Yours $200.00
    GENERAL ELECTRIC 12JBC53L3A

    GENERAL ELECTRIC

    12JBC53L3A

    DISCONTINUED BY MANUFACTURER, RELAY / PHASE DIRECTIONAL OVERCURRENT, TYPE JBC, 120 V, 60 CYCLES, INVERSE TIME OVERCURRENT 1.5/6 AMP, INSTANTANEOUS OVERCURRENT 4-16 AMP, DIRECTIONAL PICK-UP 2 ...
    ✓ IN STOCK!
    Buy Surplus As Low As $1,320.00
    $1,320.00
    Repair Yours $1,096.00
    LITTELFUSE RM2000

    LITTELFUSE

    RM2000

    REMOTE MONITOR FOR 1 DEVICE/ R/ BOX
    ✓ IN STOCK!
    $1,820.00 Buy Surplus As Low As $1,092.00
    $1,092.00
    Repair Yours $907.00
    ASEA BROWN BOVERI 715330-F80

    ASEA BROWN BOVERI

    715330-F80

    DISCONTINUED BY MANUFACTURER, CURRENT TRANSFORMER POWER SHIELD
    ✓ IN STOCK!
    Buy Surplus As Low As $360.00
    $360.00
    MARSH BELLOFRAM SLA-230-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-230-ASA

    PHASE MONITOR, 190-270 VAC, 50/60 HZ, CONTACTS 10 AMP @ 240 VAC, RESISTIVE 345 VAC
    ✓ IN STOCK!
    $152.00 Buy New $152.00
    $120.00
    Repair Yours Contact Us
    MARSH BELLOFRAM SLA-380-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-380-ASA

    PHASE, MONITOR, RELAY, 5AMPS, 120VAC
    ✓ IN STOCK!
    $544.00 Buy New $544.00
    $372.60
    Repair Yours $272.00
    MARSH BELLOFRAM SLA-440-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-440-AFE

    PHASE MONITOR/RELAY
    ✓ IN STOCK!
    $333.13 Buy New $333.13
    $199.88
    Repair Yours $200.00
    MARSH BELLOFRAM SLA-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-440-ALE

    PHASE MONITORING/RELAY, PHASE SEQUENCE/LOSS MONITOR, 430-480 VAC, 3 PHASE SUPPLY
    ✓ IN STOCK!
    $361.00 Buy New $361.00
    $218.00
    Repair Yours $200.00
    MARSH BELLOFRAM SLA-480-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-480-AFE

    PHASE VOLTAGE MONITOR, RELAY, SLA SERIES, 480 VAC, SURFACE MOUNTED
    ✓ IN STOCK!
    $526.29 Buy New $526.29
    $399.98
    Repair Yours $262.09
    MARSH BELLOFRAM SLD-380-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLD-380-ALE

    PHASE MONITOR RELAY
    ✓ IN STOCK!
    $441.47 Buy New $441.47
    $335.52
    Repair Yours $219.85
    MARSH BELLOFRAM SLD-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLD-440-ALE

    PHASE MONITORING RELAY, 440-480 VAC, DPDT, 3 AMP, 600 VAC, SCREW TERMINATION
    ✓ IN STOCK!
    $545.00 Buy New $545.00
    $328.00
    Repair Yours $264.00
    MARSH BELLOFRAM SLE-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLE-440-ALE

    RELAY, PHASE LOSS, UNBALANCE & UNDER VOLTAGE RELAY
    ✓ IN STOCK!
    $495.10 Buy New $495.10
    $297.06
    Repair Yours $246.56
    MARSH BELLOFRAM SLM-120-ASE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLM-120-ASE

    PHASE MONITORS MICROPROCESSOR CONTROLLED
    ✓ IN STOCK!
    $648.42 Buy New $648.42
    $492.80
    Repair Yours $322.91
    MARSH BELLOFRAM SLM-230-ASE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLM-230-ASE

    PHASE MONITOR, MICROPROCESSOR CONTROLLED, 200-250 VAC, CONTACTS: 10 AMP @ 240 VAC
    ✓ IN STOCK!
    $637.00 Buy New $637.00
    $383.00
    Repair Yours $308.00
    MARSH BELLOFRAM SLM-440-ASE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLM-440-ASE

    PHASE MONITOR, TIME DELAY, 440-490 VAC, 50/60 HZ, 3 AMP
    ✓ IN STOCK!
    $934.04 Buy New $934.04
    $560.42
    Repair Yours $290.00
    MARSH BELLOFRAM SLU-100-ASD

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLU-100-ASD

    PHASE MONITOR RELAY, SLU-100 SERIES, 3-PHASE, DIN RAIL MOUNT, UNIVERSAL, SPDT CONTACT FORM, 10 AMP, 550 VAC SUPPLY, 240 V RATING
    ✓ IN STOCK!
    $631.00 Buy New $631.00
    $493.00
    Repair Yours $306.00
    MARSH BELLOFRAM PBD-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBD-440-ALE

    3 PHASE SEQUENCE & VOLTAGE BAND MONITOR/RELAYS, MAX VOLTAGE 550 VAC, ADJUSTABLE RANGES 390-480 UNDER/440-540 OVER, DPDT, CONTACT RATING 600 VAC, AUTOMATIC RESET
    ✓ IN STOCK!
    $564.00 Buy New $564.00
    $339.00
    Repair Yours $276.00
    MARSH BELLOFRAM PBD-480-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBD-480-ALE

    PHASE SEQUENCE AND VOLTAGE BAND MONITOR,480VAC 50/60HZ,CONTACTS 10AMP 240VAC RES,360VA 600VAC IND
    ✓ IN STOCK!
    $418.31 Buy New $418.31
    $250.98
    Repair Yours $208.32
    MARSH BELLOFRAM PBE-440-ASE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PBE-440-ASE

    THREE PHASE VOLTAGE BAND MONITOR RELAY
    ✓ IN STOCK!
    $970.00 Buy New $970.00
    $582.00
    Repair Yours $484.00
    MARSH BELLOFRAM PRA-100-AFA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    PRA-100-AFA

    PHASE SEQUENCE MONITOR, 208-480VAC SUPPLY, CONTACTS 10A AT 240VAC, 8PIN SOCKET
    ✓ IN STOCK!
    $273.00 Buy New $273.00
    $209.00
    Repair Yours $200.00
    MARSH BELLOFRAM SUA-230-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SUA-230-ALA

    PHASE MONITOR RELAY, SPDT, 10 AMP AT 240 VAC, 190-270 V ADJUSTABLE, LOCK SHAFT, OCTAL PLUG IN
    ✓ IN STOCK!
    $296.00 Buy New $296.00
    $179.00
    Repair Yours $200.00
    MARSH BELLOFRAM VBA-208-AFN

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    VBA-208-AFN

    SINGLE PHASE VOLTAGE BAND MONITOR/RELAYS
    ✓ IN STOCK!
    $613.00 Buy New $613.00
    $368.00
    Repair Yours $306.00
    MARSH BELLOFRAM VBA-208-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    VBA-208-ALA

    SINGLE PHASE VOLTAGE BAND MONITOR/RELAYS
    ✓ IN STOCK!
    $316.42 Buy New $316.42
    $240.48
    Repair Yours $200.00
    ASEA BROWN BOVERI 64418-1V

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    64418-1V

    RELAY
    ✓ IN STOCK!
    $2,018.75 Buy New $2,018.75
    $1,173.70
    Repair Yours $986.04
    ASEA BROWN BOVERI 69326-2R

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    69326-2R

    RELAY, POWER TYPE, 24VDC COIL
    ✓ IN STOCK!
    Buy Surplus As Low As $67.32
    $67.32
    MARSH BELLOFRAM SLA-120-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-120-ALE

    PHASE MONITORING RELAY, 95-130 VAC, 10A, DPDT, SCREW TERMINAL, SLA SERIES
    ✓ IN STOCK!
    $581.00 Buy New $581.00
    $442.00
    Repair Yours $282.00
    TT ELECTRONICS PVT312LS

    TT ELECTRONICS

    INTERNATIONAL RESISTIVE

    PVT312LS

    MIN QTY 250 VOLTAGE MONITORING RELAY; LEADED PROCESS COMPATIBLE:NO; PEAK REFLOW COMPATIBLE (260 C):NO ROHS COMPLIANT: NO
    ✓ IN STOCK!
    $6.36 Buy Surplus As Low As $3.82
    $3.82
    KEARNEY NATIONAL INC 22.017-03-200-A/4H

    KEARNEY NATIONAL INC

    22.017-03-200-A/4H

    DISCONTINUED BY MANUFACTURER, FAULT INDICATOR CRAB, 200 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $23.34
    $23.34
    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 $23.34
    $23.34
    MACROMATIC PMP575

    MACROMATIC

    PMP575

    3-PHASE MONITOR RELAY, 575 VAC, 8 PIN PLUG-IN, 10 AMP SPDT RELAY, PHASE LOSS, REVERSAL - FIXED, UNBALANCE, OVER/UNDER VOLTAGE - ADJUSTABLE
    ✓ IN STOCK!
    $209.00 Buy New $209.00
    $126.00
    SIEMENS 3TK2022-7AM0

    SIEMENS

    FURNAS ELECTRIC CO

    3TK2022-7AM0

    MINIATURE CONTACTOR, FLAT CONNECTOR TERMINAL, 2 NO + 2 NC, SCREW MOUNTING (DIAGONAL), 220VAC, 50-60HZ
    ✓ IN STOCK!
    $173.00 Buy Surplus As Low As $132.00
    $132.00
    TE CONNECTIVITY KUHP-11D17-48

    TE CONNECTIVITY

    AMP

    KUHP-11D17-48

    RELAY, 48VDC, 3/4 HP, 120 VAC, 20 AMP
    ✓ IN STOCK!
    $20.00 Buy Surplus As Low As $12.00
    $12.00
    Repair Yours Contact Us
    HONEYWELL R720C-1009

    HONEYWELL

    R720C-1009

    HONEYWELL , R720C-1099, R720C1099, RECEIVER RELAY, 120/208/240/277VAC, 50/60HZ
    ✓ IN STOCK!
    $34.56 Buy Surplus As Low As $20.74
    $20.74
    Repair Yours Contact Us
    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!
    $379.10 Buy Surplus As Low As $227.46
    $227.46
    Repair Yours $200.00
    CR MAGNETICS CR4395-EL-24D-330-X-CD-ELR-I

    CR MAGNETICS

    CR4395-EL-24D-330-X-CD-ELR-I

    AC CURRENT SENSING RELAY, SOLID CORE INTERNAL CT, 50 - 400 HZ FREQ RANGE, 24 VDC +/- 10% POWER SUPPLY, UNDERCURRENT DETECTION, NON-LATCHING, NO TIME DELAY, 3 - 30 AAC ADJUSTABLE TRIP RANGE, ...
    ✓ IN STOCK!
    $91.41 Buy New $91.41
    $54.85
    Repair Yours Contact Us
    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!
    $128.00 Buy Surplus As Low As $60.00
    $60.00
    Repair Yours Contact Us
    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 $123.62
    $123.62
    Repair Yours Contact Us
    MOTOR PROTECTION ELEC. INC AITWS

    MOTOR PROTECTION ELEC. INC

    AITWS

    DISCONTINUED BY MANUFACTURER, ELECTRIC MOTOR INSULATION MONITOR, AUTO INSULATION TESTER, W/SOCKET, 120 VAC INPUT, 50/60 HZ, 5.9 VA, INTERNAL DC VOLT: 500 VDC, RELAY CONTACT RATING:, 3 AMP NO ...
    ✓ IN STOCK!
    Buy Surplus As Low As $768.00
    $768.00
    Repair Yours $500.00
    GENERAL ELECTRIC 12HAA15H1F

    GENERAL ELECTRIC

    12HAA15H1F

    AUXILIARY RELAY, 24VDC,AVAILABLE, SURPLUS, NEVER USED, 2 YEAR RADWELL WARRANTY
    ✓ IN STOCK!
    Buy Surplus As Low As $665.28
    $665.28
    Repair Yours $501.98
    DOLD BA 9043/001 3AC 50/60HZ 400V

    DOLD

    BA 9043/001 3AC 50/60HZ 400V

    VOLTAGE MONITORING RELAY, DPDT CONTACTS, NEUTRAL PHASE, 230/400 VAC, SCREW TYPE TERMINAL, DIN RAIL MOUNT
    ✓ IN STOCK!
    $263.00 Buy Surplus As Low As $158.00
    $158.00
    Repair Yours $200.00
    DOLD AN5970

    DOLD

    AN5970

    FAULT ANNUNCIATOR, 50/60HZ, 24V
    ✓ IN STOCK!
    $908.34 Buy Surplus As Low As $690.34
    $690.34
    Repair Yours $452.35
    ALLEN BRADLEY 809-B20E

    ALLEN BRADLEY

    809-B20E

    809-B20E, 809B20E, INSTANTANEOUS TRIP CURRENT RELAY, 130AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $2,035.28
    $2,035.28
    Repair Yours $1,535.71
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