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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 601-650 of 838.
    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
    WESTINGHOUSE 1293C47G12

    WESTINGHOUSE

    1293C47G12

    DISCONTINUED BY MANUFACTURER, GROUND FAULT RELAY, (P/N 255P156H06C), .125 AMPS, 120 VAC, 50/60 HZ, 28-125 VDC OUTPUT, 255P156H06C
    ✓ IN STOCK!
    Buy Surplus As Low As $315.82
    $315.82
    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 3TX7014-1BM02

    SIEMENS

    FURNAS ELECTRIC CO

    3TX7014-1BM02

    DISCONTINUED BY MANUFACTURER, INPUT COUPLER WITH PLUG-IN RELAY, 1 CHANGE-OVER CONTACT, HARD GOLD-PLATED, SCREW TERMINAL, 24 V DC, ENCLOSURE WIDTH 6.2 MM
    ✓ IN STOCK!
    $61.67 Buy Surplus As Low As $17.72
    $17.72
    SIEMENS 3UG4614-1BR20

    SIEMENS

    3UG4614-1BR20

    MONITORING RELAY 3 PHASE VOLTAGE INSULATION MONITORING 22.5MM WIDTH SCREW TERMINAL, ASM_MONITOR 3UG4614-1BR20-MONITORING_RELAYS_SCREW_TERMINAL
    ✓ IN STOCK!
    $449.96 Buy Surplus As Low As $257.11
    $257.11
    Repair Yours $300.00
    SIEMENS 3UG4633-1AL30

    SIEMENS

    3UG4633-1AL30

    DIGITAL MONITORING RELAY, VOLTAGE MONITORING, 22.5 MM, 17-275 VAC/DC, OVERSHOOT AND UNDERSHOOT, SELF-POWERED, SPIKE DELAY 0.1 TO 20 S, HYSTERESIS 0.1 TO 150 V, 1 CO CONTACT, WITH OR WITHOUT ...
    ✓ IN STOCK!
    $293.49 Buy Surplus As Low As $180.59
    $180.59
    Repair Yours $300.00
    SIEMENS 3TX7115-5NC03

    SIEMENS

    3TX7115-5NC03

    PREMIUM PLUG-IN RELAY. 3PDT. 10A. 24VDC, PLUG-IN RELAY, PREMIUM LED, MECHANICAL FLAG 11-PIN SQUARE BASE 3PDT, 10A, 24VDC USES SOCKET 3TX7144-4E4
    ✓ IN STOCK!
    $76.00 Buy Surplus As Low As $25.25
    $25.25
    Repair Yours $300.00
    SIEMENS 3TX7114-5LC13

    SIEMENS

    3TX7114-5LC13

    PLUG-IN RELAY, 3TX SERIES, 24 VAC CONTROL VOLTAGE, 50/60 HZ, DOUBLE POLE DOUBLE THROW, 15 AMP CONTACT RATING, PREMIUM LED, MECHANICAL FLAG, 8-PIN, USES SOCKET 3TX7144-1E6 OR 3TX7144-4E6 , 3T ...
    ✓ IN STOCK!
    $50.40 Buy Surplus As Low As $38.85
    $38.85
    Repair Yours $300.00
    SIEMENS 3TX7114-5LC03

    SIEMENS

    3TX7114-5LC03

    PLUG-IN RELAY, PREMIUM LED, MECHANICAL FLAG, 8-PIN, SQUARE BASE DPDT, 15A, 24VDC, USES SOCKET 3TX7144-1E6 OR 3TX7144-4E6
    ✓ IN STOCK!
    $49.00 Buy Surplus As Low As $29.00
    $29.00
    Repair Yours $300.00
    SIEMENS 3TX7112-1NF13

    SIEMENS

    3TX7112-1NF13

    PLUG-IN RELAY, PREMIUM LED, MECHANICAL FLAG, 11-PIN, OCTAL BASE 3PDT, 10A, 120VAC, USES SOCKET 3TX7144-1E3 OR 3TX7144-4E3 , 3TX7112-1NF13 , 3TX7112-1NF13
    ✓ IN STOCK!
    $83.79 Buy Surplus As Low As $44.12
    $44.12
    Repair Yours $300.00
    SIEMENS 3TX7112-1LG13

    SIEMENS

    3TX7112-1LG13

    PREM PLUG-IN RELAY. OCT. DPDT. 10A. 240VAC, PLUG-IN RELAY, PREMIUM LED, MECHANICAL FLAG 8-PIN OCTAL BASE DPDT, 10A, 230VAC USES SOCKET 3TX7144-1E2 OR 3TX7144-4E2
    ✓ IN STOCK!
    $76.00 Buy Surplus As Low As $33.00
    $33.00
    Repair Yours $300.00
    SIEMENS 3TX7112-1LC03

    SIEMENS

    3TX7112-1LC03

    PLUG-IN RELAY, PREMIUM LED, MECHANICAL FLAG, 8-PIN, OCTAL BASE DPDT, 10A, 24VDC, USES SOCKET 3TX7144-1E2 OR 3TX7144-4E2
    ✓ IN STOCK!
    $72.45 Buy Surplus As Low As $34.64
    $34.64
    Repair Yours $300.00
    SIEMENS 3TX7111-3PC13

    SIEMENS

    3TX7111-3PC13

    PREMIUM PLUG-IN RELAY. 4PDT. 6A. 24VAC, PLUG-IN RELAY, PREMIUM LED, MECHANICAL FLAG 14-PIN SQUARE BASE 4PDT, 6A, 24VAC USES SOCKET 3TX7144-1E5 OR 3TX7144-4E5
    ✓ IN STOCK!
    $48.00 Buy Surplus As Low As $31.00
    $31.00
    Repair Yours $300.00
    SIEMENS 3UG3501-1AC20

    SIEMENS

    FURNAS ELECTRIC CO

    3UG3501-1AC20

    DISCONTINUED BY MANUFACTURER: 02/08/2008, MONITORING RELAY, 24 VAC, 50/60 HZ, SCREW CONNECTION, 5-100 KOHM SENSITIVITY, 1 CO CONTACT, FOR LEVEL MONITORING, SUCCESSOR: 3UG4501-1AW30
    ✓ IN STOCK!
    Buy Surplus As Low As $103.55
    $103.55
    SIEMENS 3TX7130-0QF13

    SIEMENS

    3TX7130-0QF13

    OPEN PWR RELAY. SPST-NC-DM. 40A. 120VAC, 3TX71300QF13 OPEN POWER RELAY HEAVY DUTY SPDT-NC-DM, 40A, 120VAC OPTIONAL METAL COVER 3TX7144-1M0
    ✓ IN STOCK!
    $95.00 Buy Surplus As Low As $60.00
    $60.00
    Repair Yours $300.00
    SIEMENS 3TX7130-0DF13

    SIEMENS

    3TX7130-0DF13

    OPEN PWR RELAY. DPST. 40A. 120VAC, OPEN POWER RELAY HEAVY DUTY DPDT, 40A, 120VAC OPTIONAL METAL COVER 3TX7144-1M0
    ✓ IN STOCK!
    $90.48 Buy Surplus As Low As $54.29
    $54.29
    Repair Yours $300.00
    SIEMENS 3TX7110-5JG13

    SIEMENS

    3TX7110-5JG13

    PREMIUM PLUG-IN RELAY. SPDT. 15A. 240VAC, PLUG-IN RELAY, PREMIUM LED, MECHANICAL FLAG 5-PIN SQUARE BASE SPDT, 15A, 230VAC USES SOCKET 3TX7144-4E7
    ✓ IN STOCK!
    $38.00 Buy Surplus As Low As $27.00
    $27.00
    Repair Yours $300.00
    SIEMENS 3TX7110-5BF13C

    SIEMENS

    3TX7110-5BF13C

    15A 24VDC RELAY, PLUG-IN RELAY, BASIC 5-PIN SQUARE BASE SPDT, 15A, 120VAC USES SOCKET 3TX7144-4E7
    ✓ IN STOCK!
    $28.60 Buy Surplus As Low As $19.77
    $19.77
    Repair Yours $300.00
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