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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 551-600 of 827.
    ASEA BROWN BOVERI 419B0042

    ASEA BROWN BOVERI

    419B0042

    DISCONTINUED BY MANUFACTURER, DIFFERENTIAL RELAY, MODEL 87B, CIRCUIT SHIELD, HIGH IMPEDANCE, 125 VDC, 25/50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $2,333.18
    $2,333.18
    Repair Yours $980.00
    MATSUSHITA ELECTRIC CA1A-DC12V-B

    MATSUSHITA ELECTRIC

    AROMAT

    CA1A-DC12V-B

    CA RELAY
    ✓ IN STOCK!
    $37.80 Buy Surplus As Low As $22.68
    $22.68
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CB1-R-WM-12V

    MATSUSHITA ELECTRIC

    AROMAT

    CB1-R-WM-12V

    AUTOMOTIVE RELAYS 1 FORM C 12V WITH RESISTOR
    ✓ IN STOCK!
    $6.12 Buy Surplus As Low As $3.67
    $3.67
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CB1A-T-M-24V

    MATSUSHITA ELECTRIC

    AROMAT

    CB1A-T-M-24V

    AUTOMOTIVE RELAY,CB RELAY(AUTOMO
    ✓ IN STOCK!
    $9.03 Buy Surplus As Low As $5.42
    $5.42
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CM1F-D-12V

    MATSUSHITA ELECTRIC

    AROMAT

    CM1F-D-12V

    RELAY, 35A, 12V, 5 PIN
    ✓ IN STOCK!
    $14.40 Buy Surplus As Low As $6.65
    $6.65
    Repair Yours $300.00
    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
    GENERAL ELECTRIC 12IFC77AD1A

    GENERAL ELECTRIC

    12IFC77AD1A

    DISCONTINUED BY MANUFACTURER, OBSOLETE, RELAY OVERCURRENT EXTREMELY INVERSE
    ✓ IN STOCK!
    Buy Surplus As Low As $961.10
    $961.10
    Repair Yours $839.70
    GENERAL ELECTRIC 12SFC151D3A

    GENERAL ELECTRIC

    12SFC151D3A

    OBSOLETE, RELAY STATIC TIME OVERCURRENT 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $861.64
    $861.64
    Repair Yours $752.80
    SELEC 600PSR-165/300-CU

    SELEC

    600PSR-165/300-CU

    PHASE SEQUENCE RELAY,DIN RAIL MOUNT, ACCURACY IS ±10V, PHASE FAILURE- PHASE REVERSED , SPACE SAVING DESIGN,1 C/O SPDT OUTPUT CONTACT, 165 -300V AC (L-L) SUPPLY, SIZE 17.5 X 90MM.
    ✓ IN STOCK!
    $40.33 Buy New $40.33
    $29.04
    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!
    $326.00 Buy New $326.00
    $130.77
    Repair Yours $300.00
    SIEMENS 3UF7111-1AA01-0

    SIEMENS

    3UF7111-1AA01-0

    CURRENT/VOLTAGE MEASURING MODULE, 3-40 AMP, 690 VAC, 50/60 HZ, 6KV, STRAIGHT THROUGH TRANSFORMER, SCREW TYPE TERMINAL, IP20
    ✓ IN STOCK!
    $838.00 Buy Surplus As Low As $637.00
    $637.00
    Repair Yours $439.00
    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!
    $141.84 Buy Surplus As Low As $53.05
    $53.05
    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!
    $142.56 Buy Surplus As Low As $59.86
    $59.86
    ASEA BROWN BOVERI 1SVR550826R9100

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR550826R9100

    RELAY, PHASE SEQUENCE MONITORING, 200-500 V, 50/60 HZ, SCREW CLAMP, DIN RAIL MOUNT, 3 PHASE, SPDT , 1SVR550826R9100
    ✓ IN STOCK!
    $98.00 Buy Surplus As Low As $54.00
    $54.00
    Repair Yours $300.00
    ASEA BROWN BOVERI RK-626-430-AB

    ASEA BROWN BOVERI

    RK-626-430-AB

    DIFFERENTIAL RELAY TRANSFORMER, 5AMP,
    ✓ IN STOCK!
    Buy Surplus As Low As $950.00
    $950.00
    MEGACON KCV234E

    MEGACON

    KCV234E

    SYNCRONISATION CONTROLLER 380/415VAC 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $132.24
    $132.24
    MEGACON KCG592

    MEGACON

    KCG592

    DISCONTINUED BY MANUFACTURER, LOSS OF MAINS PROTECTION RELAY, INPUT: 100-120/200-240/380-415/440-460 VAC 40-70 HZ, SCREW CLAMP TERMINALS, OPERATING TEMPERATURE -20 TO 70 ºC, DIN-RAIL/SCREW M ...
    ✓ IN STOCK!
    Buy Surplus As Low As $202.72
    $202.72
    Repair Yours $267.51
    GOTRONIC 585109

    GOTRONIC

    585109

    POWER LINE MONITOR,480VAC,50/60HZ
    ✓ IN STOCK!
    $372.84 Buy Surplus As Low As $176.61
    $176.61
    Repair Yours $300.00
    ASEA BROWN BOVERI CM-SRS.22S

    ASEA BROWN BOVERI

    CM-SRS.22S

    CURRENT MONITORING RELAY, 24-240V AC/DC, 50/60 HZ, OVER- OR UNDERCURRENT MONITORING, SCREW TERMINALS, DIN RAIL MOUNT
    ✓ IN STOCK!
    $407.00 Buy Surplus As Low As $230.64
    $230.64
    Repair Yours $300.00
    BROYCE CONTROL LPRT/2 400V

    BROYCE CONTROL

    LPRT/2 400V

    UNDER VOLTAGE MONITORING RELAY, 3 PHASE, 243-540 VAC, 48-63 HZ, 50 MS RESPONSE TIME, DPDT, DIN RAIL MOUNT
    ✓ IN STOCK!
    $104.00 Buy Surplus As Low As $80.00
    $80.00
    REGAL REXNORD 4 1/2F EB SLEEVE

    REGAL REXNORD

    KOP FLEX

    4 1/2F EB SLEEVE

    COUPLING SLEEVE, 4-1/2IN, 10BOLT, 505HP AT 100RPM, 318K IN LB TORQUE, FLANGE OD 13-5/8IN, , 4 1/2F EB SLEEVE
    ✓ IN STOCK!
    $4,083.00 Buy Surplus As Low As $2,058.07
    $2,058.07
    Repair Yours $1,304.00
    GIC MAC04D0100

    GIC

    MAC04D0100

    VOLTAGE MONITORING RELAY, DPDT, 415VAC; PRODUCT RANGE:SM 500 SERIES; CONTACT CONFIGURATION:DPDT; CONTACT CURRENT:5A; RELAY MOUNTING:DIN RAIL; CONTACT VOLTAGE VAC:250V; RELAY TERMINALS:SCREW; ...
    ✓ IN STOCK!
    $97.00 Buy Surplus As Low As $59.00
    $59.00
    Repair Yours Contact Us
    SYMCOM 201-200-DPDT-60MS

    SYMCOM

    201-200-DPDT-60MS

    VOLTAGE MONIOR, 3-PHASE MOTOR PROTECTION, USED ON 120V OR 240V, 50/60HZ MOTORS TO PROTECT FROM DAMAGE CAUSED BY SINGLE PHASING, LOW VOLTAGE, PHASE REVERSAL, AND VOLTAGE UNBALANCE,
    ✓ IN STOCK!
    $93.79 Buy Surplus As Low As $51.97
    $51.97
    KEYENCE CORP RF-500

    KEYENCE CORP

    RF-500

    LASER SCANNER, W BREAKAGE, DC 5 V, CLASS 2, 12 PIN ROUND CONNECTION
    ✓ IN STOCK!
    $2,361.00 Buy Surplus As Low As $732.82
    $732.82
    Repair Yours $608.24
    BENDER RCM470LY

    BENDER

    RCM470LY

    DISCONTINUED BY MANUFACTURER, RESIDUAL CURRENT MONITOR, 230 VAC SUPPLY, 40-400 HZ, 0-10 SECOND RESPONSE DELAY +/- 20%, 180 OHM CIRCUIT RESISTANCE, -10 TO +55 DEGREE C OPERATING TEMPERATURE, ...
    ✓ IN STOCK!
    Buy Surplus As Low As $599.21
    $599.21
    Repair Yours $474.00
    REGAL REXNORD 3 1/2F SB SLEEVE

    REGAL REXNORD

    KOP FLEX

    3 1/2F SB SLEEVE

    3 1/2F SB SLEEVE, FAST COUPLING-500 , 3 1/2F SB SLEEVE
    ✓ IN STOCK!
    $2,802.00 Buy Surplus As Low As $1,917.00
    $1,917.00
    Repair Yours $895.00
    GENERAL ELECTRIC 12CLPG12B3A

    GENERAL ELECTRIC

    12CLPG12B3A

    DISCONTINUED BY MANUFACTURER, CARRIER GROUND DIRECTIONAL RELAY, 120VAC, 5AMP, 60HZ, 125VDC, 1AMP, 1-4/2-8 OVERCURRENT AMP, TYPE CLPG12C
    ✓ IN STOCK!
    Buy Surplus As Low As $1,004.43
    $1,004.43
    Repair Yours $833.68
    RADWELL RAD-PM-002

    RADWELL

    RAD-PM-002

    PHASE MONITOR RELAY, 3-PHASE , 190-500 VAC, DIN RAIL, 10 AMP DPDT RELAYS, PHASE LOSS, REVERSAL - FIXED, UNBALANCE, OVER/UNDER VOLTAGE - ADJUSTABLE
    ✓ IN STOCK!
    $180.00 Buy New $180.00
    $91.50
    Repair Yours $300.00
    RADWELL VERIFIED SUBSTITUTE D65VMLS480-SUB

    RADWELL VERIFIED SUBSTITUTE

    D65VMLS480-SUB

    SUBSTITUTE FOR EATON CORPORATION D65VMLS480, PHASE MONITOR RELAY, 3-PHASE , 190-500 VAC, DIN RAIL, 10 AMP DPDT RELAYS, PHASE LOSS, REVERSAL - FIXED, UNBALANCE, OVER/UNDER VOLTAGE - ADJUSTABL ...
    ✓ IN STOCK!
    $180.00 Buy New $180.00
    Repair Yours Contact Us
    NK TECHNOLOGIES AG3-NOR-120-NF-TR3

    NK TECHNOLOGIES

    AG3-NOR-120-NF-TR3

    GROUND FAULT SENSOR, 10MA, 30MA, 5MA, 120VAC, 30VDC, 2.0A, 120VAC, 0.5A
    ✓ IN STOCK!
    $214.56 Buy Surplus As Low As $80.24
    $80.24
    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 $162.41
    $162.41
    Repair Yours $300.00
    OMRON SDV-A-200V

    OMRON

    SDV-A-200V

    VOLTAGE SENSOR, 2 AMPS, 200 VOLTS (AC), 8 PIN CONNECTION
    ✓ IN STOCK!
    $256.21 Buy Surplus As Low As $114.98
    $114.98
    Repair Yours $300.00
    CEE RAD7004

    CEE

    RAD7004

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, 110V
    ✓ IN STOCK!
    Buy Surplus As Low As $86.51
    $86.51
    Repair Yours $401.26
    CARLO GAVAZZI SJ-185-230-500V

    CARLO GAVAZZI

    ELECTROMATIC

    SJ-185-230-500V

    DISCONTINUED BY MANUFACTURER, VOLTAGE CONTROL, 230 VAC, 50/60 HZ, RANGE 100-500 VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $152.00
    $152.00
    MEGACON KCG594A

    MEGACON

    KCG594A

    SYNCRONISATION CONTROLLER 24VDC 380/415VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $132.24
    $132.24
    GENERIC KH/U-..-H BV923

    GENERIC

    KH/U-..-H BV923

    RELAY
    ✓ IN STOCK!
    $56.78 Buy Surplus As Low As $30.50
    $30.50
    OMRON K8AB-VW3-AC200/230

    OMRON

    K8AB-VW3-AC200/230

    VOLTAGE RELAY 6A 1PH 200/230VAC 5VA 50/60HZ
    ✓ IN STOCK!
    $125.23 Buy Surplus As Low As $33.51
    $33.51
    ENDRESS & HAUSER CM42-IAA101EAE00

    ENDRESS & HAUSER

    CM42-IAA101EAE00

    TRANSMITTER LIQUID ANALYSIS MULTIPARAMETER, LOOP-POWERED. WORLDWIDE APPROVALS, HAZARDOUS AREAS DEVELOPED ACCORDING TO IEC 61508, PH/ORP, CONDUCTIVITY,OXYGEN (DO) DIGITAL SENSORS, MEMOSENS PR ...
    ✓ IN STOCK!
    $5,841.84 Buy Surplus As Low As $3,856.18
    $3,856.18
    Repair Yours $2,798.00
    GIC MJA3BK

    GIC

    MJA3BK

    PTC THERMISTOR RELAY, PD225 SERIES, 24 VAC/DC -20/+10%, 2 C/O CONFIGURATION, 2 VA POWER CONSUMPTION, -15 TO 60 DEGREE, IP20
    ✓ IN STOCK!
    $113.30 Buy Surplus As Low As $84.84
    $84.84
    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!
    $71.00 Buy Surplus As Low As $23.46
    $23.46
    Repair Yours $300.00
    LUTZE 722814

    LUTZE

    722814

    CONTROL, CPSB3-2400-24 , 3-PHASE 2400W, 24V, 100A
    ✓ IN STOCK!
    $3,141.67 Buy New $3,141.67
    $1,632.39
    Repair Yours $1,266.25
    HAYASHI WATCH-WORKS LA-150RX-P

    HAYASHI WATCH-WORKS

    LA-150RX-P

    DISCONTINUED BY MANUFACTURER, LIGHT SOURCE TRANSMISSION, WARNING LAMP LED'S
    ✓ IN STOCK!
    Buy Surplus As Low As $600.00
    $600.00
    Repair Yours $500.00
    REGAL REXNORD 2 1/2F SB SLEEVE

    REGAL REXNORD

    KOP FLEX

    2 1/2F SB SLEEVE

    COMPLETE GEAR COUPLING, SIZE 2-1/2 INCH SOLID, SHROUDED BOLT, FULL FLEX, 8-3/8 INCH OUTER DIAMETER, 6-3/16 INCH LENGTH , 2 1/2F SB SLEEVE
    ✓ IN STOCK!
    $1,695.00 Buy Surplus As Low As $854.99
    $854.99
    Repair Yours $602.00
    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 $119.67
    $119.67
    Repair Yours $300.00
    WESTINGHOUSE 1272173A

    WESTINGHOUSE

    1272173A

    DISCONTINUED BY MANUFACTURER, IMPEDANCE RELAY, HCZ TYPE, 115VAC, 60HZ, 125VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $382.63
    $382.63
    Repair Yours $352.87
    SCHWEITZER ENGINEERING SEL-311C-0311C01H232122X

    SCHWEITZER ENGINEERING

    SEL-311C-0311C01H232122X

    DISCONTINUED BY MANUFACTURER, TRANSMISSION PROTECTION SYSTEM, 1 AMP PHASE AND 1 AMP POLARIZING CURRENT INPUT, 25 W, 48-125 V POWER SUPPLY, 48 V LOGIC INPUT, 120 VAC, 50/60 HZ, ADDITIONAL 12 ...
    ✓ IN STOCK!
    Buy Surplus As Low As $6,000.00
    $6,000.00
    Repair Yours $2,500.00
    RADWELL VERIFIED SUBSTITUTE PMDU-SUB

    RADWELL VERIFIED SUBSTITUTE

    PMDU-SUB

    SUBSTITUTE FOR MACROMATIC PMDU , PHASE MONITOR RELAY, 3-PHASE , 190-500 VAC, DIN RAIL, 10 AMP DPDT RELAYS, PHASE LOSS, REVERSAL - FIXED, UNBALANCE, OVER/UNDER VOLTAGE - ADJUSTABLE
    ✓ IN STOCK!
    $125.00 Buy New $125.00
    Repair Yours $300.00
    INVENSYS P0927AG

    INVENSYS

    FOXBORO

    P0927AG

    DISCONTINUED BY MANUFACTURER, CONTROL VOLTAGE MONITOR, I/O MONITOR, 32 X CHANNELS, 16 X DIGITAL INPUTS, 16 X DIGITAL OUTPUTS, OPERATING TEMPERATURE: -20 TO 70 C, RELATIVE HUMIDITY: 5 TO 95% ...
    ✓ IN STOCK!
    Buy Surplus As Low As $1,576.05
    $1,576.05
    Repair Yours $1,245.00
    STRUTHERS DUNN RELAYS A214XBX170

    STRUTHERS DUNN RELAYS

    A214XBX170

    GENERAL PURPOSE, GROUND FAULT INTERRUPT (GFI) RELAY, 115 VAC, 50 HZ8 PIN
    ✓ IN STOCK!
    $172.80 Buy New $172.80
    $71.80
    Repair Yours $300.00
    SCHWEITZER ENGINEERING SEL-321-321124256HGB354

    SCHWEITZER ENGINEERING

    SEL-321-321124256HGB354

    RELAY, PHASE AND GROUND DISTANCE, DIRECTION OVERCURRENT RELAY, FAULT LOCATOR, ELECTROMECHANICAL, 4 ZONE
    ✓ IN STOCK!
    $4,006.80 Buy Surplus As Low As $1,266.24
    $1,266.24
    Repair Yours $1,167.75
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