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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 351-400 of 824.
    TYCO 565-558

    TYCO

    SIMPLEXGRINNELL

    565-558

    4009 EARTH DETECT BOARD ASSEMBLY
    ✓ IN STOCK!
    CAN$61.70 Buy Surplus As Low As CAN$24.68
    CAN$24.68
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    SIEMENS 3UG4815-2AA40

    SIEMENS

    3UG4815-2AA40

    DIGITAL MONITORING RELAY 3-PHASE SUPPLY VOLTAGE FOR IO-LINK 50...60 HZ AC 3 X 160 TO 690 V PHASE SEQUENCE, PHASE FAILURE PHASE ASYMMETRY UNDERVOLTAGE AND OVERVOLTAGE HYSTERESIS 1-20 V LINE S ...
    ✓ IN STOCK!
    CAN$728.80 Buy Surplus As Low As CAN$571.45
    CAN$571.45
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    SIEMENS 5TT3400

    SIEMENS

    5TT3400

    VOLTAGE RELAY, T5570 AC 230/400V, 1CO 0.7/0.9, WITH TRANSPARENT CAP , 5TT3400
    ✓ IN STOCK!
    CAN$117.52 Buy Surplus As Low As CAN$89.61
    CAN$89.61
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    SIEMENS 3TX7015-1BF02

    SIEMENS

    3TX7015-1BF02

    DISCONTINUED BY MANUFACTURER, INPUT COUPLER, W/ PLUG-IN RELAY, 1CO CONTACT, SPRING-TYPE TERMINAL, 230V AC/DC, 50HZ, 1W
    ✓ IN STOCK!
    CAN$105.77 Buy Surplus As Low As CAN$70.51
    CAN$70.51
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    SIEMENS 3TK20400AK6

    SIEMENS

    3TK20400AK6

    MINIATURE POWER RELAY, SCREW TERMINALS, 4NO, SNAP-ON MOUNTING, STANDARD MOUNTING RAIL, AC OPERATION, 120VAC AT 60HZ, 110VAC AT 50HZ
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$242.39
    CAN$242.39
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    GENERAL ELECTRIC 12IFC77A1A

    GENERAL ELECTRIC

    12IFC77A1A

    DISCONTINUED BY MANUFACTURER, RELAY OVERCURRENT, INVERSE, 50/60 HZ, 1 - 12 AMPS
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$435.28
    CAN$435.28
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    R-K ELECTRONICS PRSL-300-1.5

    R-K ELECTRONICS

    PRSL-300-1.5

    PHASE REVERSAL 380/415VAC 3Ø DPDT 1.5S, MULTI-RANGE 1 & PHASE VOLTAGE MONITOR 115 TO 265VAC, 1Ø, 208 TO 575VAC, 3Ø, SURFACE MOUNT, SPDT CONTACTS, PUSH-ON TABS
    ✓ IN STOCK!
    CAN$452.46 Buy Surplus As Low As CAN$235.87
    CAN$235.87
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    ICM ICM450

    ICM

    ICM450

    DISCONTINUED BY MANUFACTURER, DIGITAL VOLTAGE MONITOR, 3 PHASE, LINE VOLTAGE, 190 TO 630 VAC, 50/60 HZ, FULLY PROGRAMMABLE, 25 FAULT MEMORY, 18-240 CONTROL VAC, REPLACED BY ICM450A
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$322.07
    CAN$322.07
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    LARCO 5000EX

    LARCO

    5000EX

    DISCONTINUED BY MANUFACTURER, ZONE MONITOR WALL MOUNT 120/240VAC 50/60HZ .125AMP
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$411.71
    CAN$411.71
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    ASEA BROWN BOVERI PHS120A20

    ASEA BROWN BOVERI

    SSAC

    PHS120A20

    SINGLE FUNCTION RELAYS & MONITORS, AC PHASE CONTROL
    ✓ IN STOCK!
    CAN$136.92 Buy Surplus As Low As CAN$80.80
    CAN$80.80
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    ASEA BROWN BOVERI 1SVR550870R9400

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR550870R9400

    PHASE MONITORING RELAY, 4 AMP, 400 V, 3 KV, 1 NO, WITH NEUTRAL CONNECTION, POWERED BY MEASURING CIRCUIT, FOR MONITORING OF 1-3 PHASE OVER- AND UNDERVOLTAGE, (CM-PVE) , 1SVR550870R9400
    ✓ IN STOCK!
    CAN$202.52 Buy Surplus As Low As CAN$158.65
    CAN$158.65
    WESTINGHOUSE 1272173A

    WESTINGHOUSE

    1272173A

    DISCONTINUED BY MANUFACTURER, IMPEDANCE RELAY, HCZ TYPE, 115VAC, 60HZ, 125VDC
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$430.00
    CAN$430.00
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    IMO MR-1PVM

    IMO

    MR-1PVM

    DISCONTINUED BY MANUFACTURER, RELAY, VOLTAGE MONITOR, SINGLE PHASE, MODULAR SUPPLY, 0-10 SECOND, 12-400 VAC INPUT, SCREW TERMINAL, DIN RAIL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$113.11
    CAN$113.11
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    GIC MA51BC

    GIC

    MA51BC

    VOLTAGE MONITORING RELAY, SPDT, 415VAC, PRODUCT RANGE:SM 301 SERIES, CONTACT CONFIGURATION:SPDT, CONTACT CURRENT:5A, RELAY MOUNTING:DIN RAIL, CONTACT VOLTAGE VAC:250V, RELAY TERMINALS:SCREW, ...
    ✓ IN STOCK!
    CAN$101.26 Buy Surplus As Low As CAN$34.46
    CAN$34.46
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    GENERAL ELECTRIC 12IFC66AD1A

    GENERAL ELECTRIC

    12IFC66AD1A

    DISCONTINUED BY MANUFACTURER, PROT RELAY, LONG TIME OVERCURRENT, 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$254.40
    CAN$254.40
    CROUZET DWRA2230A

    CROUZET

    SYRELEC

    DWRA2230A

    DISCONTINUED BY MANUFACTURER, PHASE MONITORING RELAY, WRA2 SERIES, 3 PHASE, 10 AMP, 230 VAC, 50/60 HZ, DIN RAIL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$284.70
    CAN$284.70
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    DEIF RMV-112D-DELTA-415VAC-ND+ND-24VDC

    DEIF

    RMV-112D-DELTA-415VAC-ND+ND-24VDC

    PROTECTIVE VOLTAGE RELAY, RMV-112D, COUPLING: DELTA, MEASURING VOLTAGE: 415/240V, MODULE: 415V, SUPPLY: 24VDC, RELAY B: NORM. DEENERGIZED, RELAY C: NORM. DEENERGIZED, UNDERVOLTAGE: 80-100%, ...
    ✓ IN STOCK!
    CAN$1,223.38 Buy Surplus As Low As CAN$353.49
    CAN$353.49
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    DEIF RMV-112D-DELTA-440VAC-ND+ND-440VAC

    DEIF

    RMV-112D-DELTA-440VAC-ND+ND-440VAC

    PROTECTIVE VOLTAGE RELAY, RMV-112D, 440VAC, NORM. DEENERGIZED, UNDERVOLTAGE 80 TO 100%, OVERVOLTAGE 100 TO 120%, 0 TO 10S
    ✓ IN STOCK!
    CAN$1,108.24 Buy Surplus As Low As CAN$337.87
    CAN$337.87
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    AUTOMATION DIRECT PMRU-1C-480A-TL

    AUTOMATION DIRECT

    PMRU-1C-480A-TL

    PHASE MONITOR RELAY, 3-PHASE, FINGER-SAFE, 190-500 VAC INPUT VOLTAGE, SPDT, 10A CONTACT RATING, 8-PIN CONNECTION, LED INDICATOR(S), PHASE REVERSAL / PHASE LOSS / UNBALANCE / OVERVOLTAGE / UN ...
    ✓ IN STOCK!
    CAN$196.39 Buy Surplus As Low As CAN$124.10
    CAN$124.10
    AREVA MVAPM32D1AA2001A

    AREVA

    MVAPM32D1AA2001A

    DISCONTINUED BY MANUFACTURER, RELAY, GENERATOR PROTECTION, MVAPM SERIES, V X 1 / 110/125 VDC, V X 2 / 220/250 VDC, VN / 110 VAC, 50 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$111.41
    CAN$111.41
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    EATON CORPORATION 13535H111-2

    EATON CORPORATION

    CUTLER HAMMER

    13535H111-2

    AC TRANSFORMER RELAY, OPEN TYPE, 20/240 VAC, 50/60 HZ
    ✓ IN STOCK!
    CAN$718.17 Buy Surplus As Low As CAN$268.60
    CAN$268.60
    RHEINTACHO 5333.001

    RHEINTACHO

    5333.001

    SPEED MONITOR RELAY
    ✓ IN STOCK!
    CAN$662.53 Buy Surplus As Low As CAN$242.02
    CAN$242.02
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    YOKOGAWA YE/50-152111FASJ

    YOKOGAWA

    YE/50-152111FASJ

    DISCONTINUED BY MANUFACTURER, VOLTAGE GAUGE, 0-600 VDC, 3-1/3 INCH DIAL
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$210.95
    CAN$210.95
    RHOMBERG SP430/380VAC-SP

    RHOMBERG

    SP430/380VAC-SP

    PHASE SEQUENCE/FAILURE/ASYMMETRY RELAY, 11PIN, 10AMP, SPDT, 380VAC, 5-15PERCENT NPS SENSITIVITY, LED INDICATING
    ✓ IN STOCK!
    CAN$209.42 Buy Surplus As Low As CAN$74.74
    CAN$74.74
    RHOMBERG SP430/400VAC-SP

    RHOMBERG

    SP430/400VAC-SP

    PHASE SEQUENCE/FAILURE/ASYMMETRY RELAY, 11PIN, 10AMP, SPDT, 400/415VAC, 5-15PERCENT NPS SENSITIVITY, LED INDICATING
    ✓ IN STOCK!
    CAN$208.37 Buy Surplus As Low As CAN$66.24
    CAN$66.24
    ASHCROFT 351005PH02LXUL300

    ASHCROFT

    351005PH02LXUL300

    COMMERCIAL PRESSURE GAUGE 3-1/2IN. DIAL 1/4IN. LOWER CONN ABS CASE BRASS SOCKET 0-300 PSI RANGE
    ✓ IN STOCK!
    CAN$43.64 Buy Surplus As Low As CAN$26.97
    CAN$26.97
    CR MAGNETICS CR7310-LH-120-.11-C-CD-ELR-I

    CR MAGNETICS

    CR7310-LH-120-.11-C-CD-ELR-I

    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, INTERNAL TRANSFORMER
    ✓ IN STOCK!
    CAN$307.02 Buy Surplus As Low As CAN$202.72
    CAN$202.72
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    ASEA BROWN BOVERI 1SVR550881R9400

    ASEA BROWN BOVERI

    1SVR550881R9400

    (PRICE/EA) CM-PBE PHASE LOSS MONI. 3PH.+ N , 1SVR550881R9400
    ✓ IN STOCK!
    CAN$196.18 Buy Surplus As Low As CAN$57.37
    CAN$57.37
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    NK TECHNOLOGIES AG3-NOAC-24U-NF-TR3

    NK TECHNOLOGIES

    AG3-NOAC-24U-NF-TR3

    AC GROUND FAULT SENSORS, AG SERIES, SOLID STATE OUTPUT,SOLID-CORE,24U - 24 VAC/VDC POWERED, JUMPER SELECT 5, 10 OR 30 MA SETPOINT, NORMALLY DE-ENERGIZED, TOP TERMINALS, N.O. 1 A @ 240 VAC
    ✓ IN STOCK!
    CAN$608.17 Buy Surplus As Low As CAN$281.82
    CAN$281.82
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    OMRON K8DT-AW1TD

    OMRON

    K8DT-AW1TD

    MEASURING AND MONITORING, CURRENT RELAY, 1-PHASE, 24VAC, DIN RAIL, 50/60HZ
    ✓ IN STOCK!
    CAN$979.82 Buy Surplus As Low As CAN$198.32
    CAN$198.32
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    OMRON K8DT-AW2TA

    OMRON

    K8DT-AW2TA

    CURRENT MONITORING RLY, SPST, 240V, DIN, PRODUCT RANGE:K8DT-AW SERIES, CONTACT CONFIGURATION:SPST-NO, CONTACT CURRENT:-, RELAY MOUNTING:DIN RAIL, CONTACT VOLTAGE VAC:-, RELAY TERMINALS:SCREW ...
    ✓ IN STOCK!
    CAN$670.33 Buy Surplus As Low As CAN$525.91
    CAN$525.91
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    MACROMATIC PCPU

    MACROMATIC

    PCPU

    MONITOR RELAY, 3-PHASE, 190-500VAC, 8 PIN SPDT, 10AMP, PHASE REVERSAL - FIXED TRIP
    ✓ IN STOCK!
    CAN$171.88 Buy New CAN$171.88
    CAN$60.23
    LITTELFUSE 102A

    LITTELFUSE

    102A

    VOLTAGE MONITOR, 3-PHASE, SPDT-1 FORM C, 190-480 VAC, 50/60 HZ, 5 WATTS, 12 - 18 AWG WIRE SIZE, -40 TO 70 DEG. C
    ✓ IN STOCK!
    CAN$386.51 Buy Surplus As Low As CAN$249.82
    CAN$249.82
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    DOLD BD9080.12 3AC400V 50/60HZ AC230V 50/60HZ

    DOLD

    BD9080.12 3AC400V 50/60HZ AC230V 50/60HZ

    DISCONTINUED BY MANUFACTURER, PHASE MONITOR, VARIMIETER PRO, L1/L2/L3: 3AC 400 V 50/60 HZ, A1/A2: AC 230 V 50/60 HZ, ADJUSTABLE TIME DELAY BETWEEN 1.1-5 S, 0045382
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$238.58
    CAN$238.58
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    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!
    CAN$478.90 Buy Surplus As Low As CAN$148.77
    CAN$148.77
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    MATSUSHITA ELECTRIC CM1F-D-12V

    MATSUSHITA ELECTRIC

    AROMAT

    CM1F-D-12V

    RELAY, 35A, 12V, 5 PIN
    ✓ IN STOCK!
    CAN$21.15 Buy Surplus As Low As CAN$7.05
    CAN$7.05
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    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!
    CAN$844.68 Buy Surplus As Low As CAN$224.76
    CAN$224.76
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    ASEA BROWN BOVERI DDA802A-63/0.03

    ASEA BROWN BOVERI

    DDA802A-63/0.03

    TYPE A RCD BLOCK,2P, 63A, 30MA
    ✓ IN STOCK!
    CAN$343.02 Buy Surplus As Low As CAN$139.22
    CAN$139.22
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    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!
    CAN$238.95 Buy Surplus As Low As CAN$90.86
    CAN$90.86
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    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!
    CAN$205.66 Buy New CAN$205.66
    CAN$157.18
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    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 CAN$113.76
    CAN$113.76
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    CR MAGNETICS CR5395-LH-24D-110-C-CD-ELR-I

    CR MAGNETICS

    CR5395-LH-24D-110-C-CD-ELR-I

    CR5395 - DC CURRENT SENSING RELAY, SUPPLY VOLTAGE 24 VDC, TRIP RANGE - 1.0 TO 10 AAC, TRIP ON DELAY - .1 TO 1 SEC, CALIBRATED DIAL, INTERNAL TRANSFORMER
    ✓ IN STOCK!
    CAN$240.63 Buy Surplus As Low As CAN$143.39
    CAN$143.39
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    TIME MARK CORP C2644-480VAC

    TIME MARK CORP

    C2644-480VAC

    POWER MONITOR, DETECTS PHASE LOSS, LOW VOLTAGE & PHASE REVERSAL, AUTO RESET (98039903), 3-PH
    ✓ IN STOCK!
    CAN$384.06 Buy Surplus As Low As CAN$238.25
    CAN$238.25
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    OMRON K8DT-AS3CD

    OMRON

    K8DT-AS3CD

    CURRENT MONITORING RLY, SPDT, 24V, DIN, PRODUCT RANGE:K8DT-AS SERIES, CONTACT CONFIGURATION:SPDT, CONTACT CURRENT:-, RELAY MOUNTING:DIN RAIL, CONTACT VOLTAGE VAC:-, RELAY TERMINALS:SCREW, CO ...
    ✓ IN STOCK!
    CAN$534.84 Buy Surplus As Low As CAN$364.32
    CAN$364.32
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    MARSH BELLOFRAM SLA-460-AFE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SLA-460-AFE

    PHASE MONITOR/RELAY, 460VAC , 3 PHASE
    ✓ IN STOCK!
    CAN$1,149.54 Buy New CAN$1,149.54
    CAN$450.06
    Repair Yours Contact Us
    MARSH BELLOFRAM DLA240ASD

    MARSH BELLOFRAM

    ATC

    DLA240ASD

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY MONITOR, DIN RAIL MOUNT, 240 VAC, 3-PHASE
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$152.82
    CAN$152.82
    MACROMATIC PMD575

    MACROMATIC

    PMD575

    PHASE MONITOR RELAY, 3 PHASE, 460-600V AC, 10A DPDT OUTPUT, PHASE LOSS / REVERSAL / UNBALANCE, OVERVOLTAGE / UNDERVOLTAGE, DIN RAIL MOUNT
    ✓ IN STOCK!
    CAN$389.29 Buy New CAN$389.29
    CAN$233.57
    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 CAN$231.47
    CAN$231.47
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    SIEMENS 3RR2143-1AA30

    SIEMENS

    3RR2143-1AA30

    MONITORING RELAY, CAN BE MOUNTED TO CONTACTOR 3RT2, SIZE S2 BASIC, ANALOG ADJUSTMENT APPARENT CURRENT MONITORING 8...80 A, 50...60 HZ, 2-PHASE SUPPLY 24 V AC/DC 1 CHANGE-OVER CONTACT MONITOR ...
    ✓ IN STOCK!
    CAN$701.71 Buy Surplus As Low As CAN$549.41
    CAN$549.41
    Repair Yours Contact Us
    SYMCOM 201A

    SYMCOM

    201A

    DISCONTINUED BY MANUFACTURER, PROTECTION RELAY, MOTORSAVER, PHASE LOSS DETECTION, REVERSE PHASE, 3 PHASE, 190/480 VAC, 50/60 HZ, 8-PIN PLUG-IN, SPDT OUTPUT, (REPLACED BY LITTELFUSE 201A)
    ✓ IN STOCK!
    Buy Surplus As Low As CAN$148.68
    CAN$148.68
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