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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 301-350 of 838.
    ASEA BROWN BOVERI PLMU11

    ASEA BROWN BOVERI

    SSAC

    PLMU11

    VOLTAGE MONITOR, 200/480V, 50/60HZ
    ✓ IN STOCK!
    $299.73 Buy Surplus As Low As $165.82
    $165.82
    Repair Yours $300.00
    TIME MARK CORP C2644

    TIME MARK CORP

    C2644

    3-PHASE MONITOR, 10AMP, 240V, DPDT, AUTOMATIC RESET, SURFACE MOUNT, TRIP DELAY, UNDER VOLTAGE PROTECTION, 480VAC
    ✓ IN STOCK!
    $220.00 Buy New $220.00
    $114.45
    Repair Yours $300.00
    TIME MARK CORP C263

    TIME MARK CORP

    C263

    POWER PHASE MONITOR, 380/480VAC, 10/15AMP, 30/60HZ, 3PH RATING, SPDT CONTACT FORM, PANEL MOUNT, SCREW TERMINATION, ELECTROMECHANICAL RELAY
    ✓ IN STOCK!
    $186.25 Buy New $186.25
    $106.43
    SIEMENS 3RS1800-1BQ00

    SIEMENS

    3RS1800-1BQ00

    DISCONTINUED BY MANUFACTURER 01/10/2018, COUPLING RELAY, 2 CHANGE-OVER CONTACTS, 24 V & 110-120 VAC/DC, INDUSTRIAL ENCLOSURE, SCREW TERMINAL
    ✓ IN STOCK!
    $122.00 Buy Surplus As Low As $22.12
    $22.12
    Repair Yours $300.00
    SIEMENS 3TX7014-1BB00

    SIEMENS

    FURNAS ELECTRIC CO

    3TX7014-1BB00

    DISCONTINUED BY MANUFACTURER, RELAY, 1-3AMP, 24VDC/AC, 0.5W, DIN RAIL
    ✓ IN STOCK!
    $37.76 Buy Surplus As Low As $24.41
    $24.41
    SIEMENS 3UG4511-1BN20

    SIEMENS

    3UG4511-1BN20

    ANALOG MONITORING RELAY, PHASE SEQUENCE MONITORING 3 X 160, 260V, 50/60HZ, DIN RAIL
    ✓ IN STOCK!
    $191.00 Buy Surplus As Low As $127.00
    $127.00
    Repair Yours $300.00
    SIEMENS 3TX7130-0RF03

    SIEMENS

    3TX7130-0RF03

    OPEN RELAY. DPDT. MAG BLO. 40A. 110VDC, OPEN POWER RELAY HEAVY DUTY DPDT, MAG BLOWOUT 40A, 110VDC OPTIONAL METAL COVER 3TX7144-1M0
    ✓ IN STOCK!
    $134.93 Buy Surplus As Low As $89.61
    $89.61
    Repair Yours $300.00
    SIEMENS 3RH1122-1KB40

    SIEMENS

    FURNAS ELECTRIC CO

    3RH1122-1KB40

    DISCONTINUED BY MANUFACTURER, CONTROL RELAY, 2NO/2NC, 24 V DC, EXTENDED COIL
    ✓ IN STOCK!
    Buy Surplus As Low As $102.00
    $102.00
    SIEMENS 3RH1140-1BG40

    SIEMENS

    FURNAS ELECTRIC CO

    3RH1140-1BG40

    DISCONTINUED BY MANUFACTURER, CONTACTOR RELAY, 4-NORMALLY OPEN CONTACTS, 125 VDC, TERMINAL SIZE S00, SUGGESTED REPLACEMENT IS 3RH2140-1BG40
    ✓ IN STOCK!
    Buy Surplus As Low As $101.13
    $101.13
    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!
    $339.00 Buy New $339.00
    $162.00
    Repair Yours $300.00
    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!
    $309.00 Buy New $309.00
    $219.00
    Repair Yours $300.00
    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!
    $592.00 Buy New $592.00
    $225.89
    Repair Yours $300.00
    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!
    $592.00 Buy New $592.00
    $339.00
    Repair Yours $300.00
    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!
    $652.00 Buy New $652.00
    $496.00
    Repair Yours $306.00
    MARSH BELLOFRAM SLU-100-ASA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLU-100-ASA

    PHASE MONITORING RELAY, SLU-100 SERIES, UNIVERSAL, SPDT CONTACT FORM, 10 AMP, 8 PIN, 550 VAC SUPPLY, 240 V RATING
    ✓ IN STOCK!
    $207.00 Buy New $207.00
    $114.45
    Repair Yours $300.00
    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!
    $751.74 Buy New $751.74
    $496.74
    Repair Yours $300.00
    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!
    $653.00 Buy New $653.00
    $361.28
    Repair Yours $308.00
    MARSH BELLOFRAM SLE-440-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLE-440-ALE

    RELAY, PHASE LOSS, UNBALANCE & UNDER VOLTAGE RELAY
    ✓ IN STOCK!
    $680.00 Buy New $680.00
    $297.06
    Repair Yours $300.00
    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!
    $398.41 Buy New $398.41
    $249.82
    Repair Yours $300.00
    MARSH BELLOFRAM SLA-440-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-440-AFE

    PHASE MONITOR/RELAY
    ✓ IN STOCK!
    $571.20 Buy New $571.20
    $377.40
    Repair Yours $300.00
    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!
    $158.10 Buy New $158.10
    $99.54
    Repair Yours $300.00
    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 $178.02
    $178.02
    Repair Yours $300.00
    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!
    $627.00 Buy New $627.00
    $327.40
    Repair Yours $300.00
    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!
    $196.00 Buy New $196.00
    $114.00
    Repair Yours $300.00
    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!
    $429.00 Buy New $429.00
    $297.00
    Repair Yours $300.00
    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!
    $410.03 Buy New $410.03
    $246.02
    Repair Yours $300.00
    MARSH BELLOFRAM CMO-120-ASE-10

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMO-120-ASE-10

    OVERCURRENT MONITOR RELAY, CMO SERIES, 24-120 V AC/DC, 50/60 HZ, SURFACE MOUNT, 2-10 AMP ADJUSTABLE TRIP POINTS
    ✓ IN STOCK!
    $494.00 Buy New $494.00
    $250.37
    Repair Yours $300.00
    MARSH BELLOFRAM CMO-120-ASA-1

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMO-120-ASA-1

    OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMO MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 120 V AC/DC, 50/60 HZ, PLUG-IN ENCLOSURE, CURRENT TRIP POINTS - 0. ...
    ✓ IN STOCK!
    $757.50 Buy New $757.50
    $261.47
    Repair Yours $300.00
    MARSH BELLOFRAM CMI-120-ASE-20

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    CMI-120-ASE-20

    OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMI MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 120 V AC, 50/60 HZ, CURRENT TRIP POINTS - 4-20 AMP
    ✓ IN STOCK!
    $792.36 Buy New $792.36
    $475.42
    Repair Yours $300.00
    MARSH BELLOFRAM DPR350B

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    DPR350B

    PHASE MONITOR, TIME DELAY, 3 PHASE, 460 VAC, DIN RAIL MOUNT
    ✓ IN STOCK!
    $208.93 Buy New $208.93
    $158.00
    Repair Yours $300.00
    MARSH BELLOFRAM DPR175A

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    DPR175A

    PHASE MONITORING RELAY, SPDT, 170-290VAC; PRODUCT RANGE:-; CONTACT CONFIGURATION:SPDT; CONTACT CURRENT:5A; RELAY MOUNTING:DIN RAIL; RELAY TERMINALS:SCREW; SWITCHING VOLTAGE MAX:250VAC; SUPPL ...
    ✓ IN STOCK!
    $194.62 Buy New $194.62
    $147.91
    Repair Yours $300.00
    MARSH BELLOFRAM AC-301-440

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    AC-301-440

    THREE PHASE MONITOR, AC-301 SERIES, DELAY-ON-MAKE, 430-480 VAC OPERATING, 2 SECOND DELAY ON DROP OUT
    ✓ IN STOCK!
    $491.00 Buy New $491.00
    $236.23
    Repair Yours $300.00
    MARSH BELLOFRAM ARA-120-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    ARA-120-AFE

    RELAY, ARA SERIES, ALTERNATING RELAY, SURFACE-MOUNT, TRIPLEXOR, 120 VAC, 10 AMP
    ✓ IN STOCK!
    $532.03 Buy New $532.03
    $319.22
    Repair Yours $300.00
    ASEA BROWN BOVERI 1495B30A22

    ASEA BROWN BOVERI

    1495B30A22

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, 120V, 250VDC, IVS 55-140VAC, TYPE CV7
    ✓ IN STOCK!
    Buy Surplus As Low As $220.00
    $220.00
    Repair Yours $300.00
    AUTOMATION DIRECT GFSL30-M1A-120A-F

    AUTOMATION DIRECT

    ACUAMP

    GFSL30-M1A-120A-F

    ACUAMP GROUND FAULT SENSOR, LARGE APERTURE FIXED CORE, 5, 10, OR 30 MA SELECTABLE TRIP POINT, RELAY, SPST-N.O., MANUAL RESET OUTPUT, 120 VAC OPERATING VOLTAGE.
    ✓ IN STOCK!
    $539.58 Buy Surplus As Low As $207.57
    $207.57
    Repair Yours $300.00
    INGERSOLL RAND RLY3715

    INGERSOLL RAND

    TRANE

    RLY3715

    START RELAY, SPST 35 AMP, REPLACES RLY1097, HVAC PARTS, SAME AS 3ARR3-J4A4, B100201P06,RLY1097,RLY-01097,RLY3715
    ✓ IN STOCK!
    $74.00 Buy Surplus As Low As $37.84
    $37.84
    Repair Yours $300.00
    SCHNEIDER ELECTRIC RM22TA33

    SCHNEIDER ELECTRIC

    SQUARE D

    RM22TA33

    PHASE MONITORING RELAY, RM22 SERIES, 380-480 VAC, 2 NO/NC, 8 AMP/250 VAC, ELECTROMECHANICAL RELAY TYPE, DIN RAIL MOUNT
    ✓ IN STOCK!
    $250.29 Buy Surplus As Low As $146.00
    $146.00
    Repair Yours $300.00
    FW MURPHY OFR500

    FW MURPHY

    OFR500

    DISCONTINUED BY MANUFACTURER, RELAY OVER FREQUENCY, FRONT STATUS LEDS, 12 PORTS
    ✓ IN STOCK!
    Buy Surplus As Low As $311.00
    $311.00
    Repair Yours $300.00
    SCHNEIDER ELECTRIC S48891

    SCHNEIDER ELECTRIC

    SQUARE D

    S48891

    GROUND FAULT INTERFACE MODULE, USED ON: ,M/P/R FRAME, NS630B, NS3200 ,ELECTRONIC TRIP CIRCUIT BREAKER
    ✓ IN STOCK!
    Buy Surplus As Low As $139.70
    $139.70
    Repair Yours $300.00
    SCHNEIDER ELECTRIC RM4UA33MW

    SCHNEIDER ELECTRIC

    TELEMECANIQUE

    RM4UA33MW

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, 300V, 5AMP, RM4, + OPTIONS, REPLACED BY RM22UA33MR
    ✓ IN STOCK!
    Buy Surplus As Low As $299.11
    $299.11
    SCHNEIDER ELECTRIC RM3TR112VS7

    SCHNEIDER ELECTRIC

    TELEMECANIQUE

    RM3TR112VS7

    DISCONTINUED BY MANUFACTURER, VOLTAGE LOSS RELAY, 3 PHASE, 380-420 VAC, 50/60 HZ, DIN RAIL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $370.80
    $370.80
    SCHNEIDER ELECTRIC RM35UB3N30

    SCHNEIDER ELECTRIC

    SQUARE D

    RM35UB3N30

    VOLTAGE CONTROL RELAY, DPDT, 114V-329V; PRODUCT RANGE:ZELIO RM35UB3 SERIES; CONTACT CONFIGURATION:DPDT; CONTACT CURRENT:5A; RELAY MOUNTING:DIN RAIL; RELAY TERMINALS:SCREW; SWITCHING VOLTAGE ...
    ✓ IN STOCK!
    $358.40 Buy Surplus As Low As $297.47
    $297.47
    Repair Yours $300.00
    SCHNEIDER ELECTRIC PR-101-PLR

    SCHNEIDER ELECTRIC

    SQUARE D

    PR-101-PLR

    DISCONTINUED BY MANUFACTURER, RELAY PHASE LOSS/REVERSAL 5AMP 120VAC .01OHM 60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $55.96
    $55.96
    SCHNEIDER ELECTRIC GP-200C

    SCHNEIDER ELECTRIC

    SQUARE D

    GP-200C

    DISCONTINUED BY MANUFACTURER, GROUND FAULT RELAY, TYPE GP, 200-1100A, TRIP SETTING
    ✓ IN STOCK!
    Buy Surplus As Low As $425.00
    $425.00
    Repair Yours $300.00
    REGAL REXNORD 303-237

    REGAL REXNORD

    UNICO

    303-237

    DISCONTINUED BY MANUFACTURER, RELAY MODULE, LNO CONVERTER, INTERFACE ADAPTER FIBER OPTIC
    ✓ IN STOCK!
    Buy Surplus As Low As $204.11
    $204.11
    GENERAL ELECTRIC 704169

    GENERAL ELECTRIC

    704169

    DISCONTINUED BY MANUFACTURER, DIFERENCIAL RD5 220V 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $260.45
    $260.45
    Repair Yours $300.00
    GOTRONIC 621102

    GOTRONIC

    621102

    MOTION CONTROL UNDERSPEED SWITCH 120VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $297.96
    $297.96
    Repair Yours $300.00
    GOTRONIC 559100

    GOTRONIC

    559100

    POWER LINE MONITOR,120VAC,10AMP,4-5 SEC
    ✓ IN STOCK!
    Buy Surplus As Low As $115.40
    $115.40
    Repair Yours $300.00
    EATON CORPORATION 8137869B0

    EATON CORPORATION

    COOPER POWER

    8137869B0

    FAULT INDICATOR LINAM 800AMP 1.81IN OD 3Q97
    ✓ IN STOCK!
    $26.57 Buy Surplus As Low As $18.82
    $18.82
    R-K ELECTRONICS DPM-120A-B

    R-K ELECTRONICS

    DPM-120A-B

    VOLTAGE MONITOR, W/DISPLAY, DIGITAL, MULTI-RANGE, 3 PHASE, 200-240/600 VAC, 120 VAC SUPPLY, SURFACE MOUNT
    ✓ IN STOCK!
    $171.00 Buy New $171.00
    $108.15
    Repair Yours $300.00
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