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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.

    Rockwell Disclaimer: The product is used surplus. Radwell is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because Radwell is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, Radwell makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Radwell also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. Radwell also makes no representations as to your right to install any such firmware on the product. Radwell will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

    Filter Results
    Results 451-500 of 821.
    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 $1,116.03
    $1,116.03
    Repair Yours $1,029.22
    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
    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
    CR MAGNETICS CR7310-EH-24D-110-X-CD-ELR-R CRGFS-100

    CR MAGNETICS

    CR7310-EH-24D-110-X-CD-ELR-R CRGFS-100

    DISCONTINUED BY MANUFACTURER, GROUND FAULT SENSOR WITH CRGFS-100, SUPPLY: 24+/-10% VDC, TRIP RANGE: 1.0-10A, TIME DELAY: NONE, TRIP STATUS: ENER. HIGH, OUTPUT TYPE: RELAY, N.O. 20A N.C. 10A
    ✓ IN STOCK!
    Buy Surplus As Low As $80.79
    $80.79
    ALLEN BRADLEY 809-A20

    ALLEN BRADLEY

    809-A20

    INSTANTANEOUS TRIP CURRENT RELAY, 130AMP, NEMA OPEN, 1RP,
    ✓ IN STOCK!
    Buy Surplus As Low As $2,199.43
    $2,199.43
    ALLEN BRADLEY 809-B24

    ALLEN BRADLEY

    809-B24

    DISCONTINUED BY MANUFACTURER, CURRENT RELAY, INSTANTANEOUS TRIP, 210 AMP, 600 VAC, MOUNTABLE
    ✓ IN STOCK!
    Buy Surplus As Low As $2,124.19
    $2,124.19
    Repair Yours $1,855.87
    RADWELL RAD-PM-003

    RADWELL

    RAD-PM-003

    PHASE MONITOR RELAY, 3-PHASE , PHASE LOSS, PHASE REVERSAL, UNDERVOLTAGE, 240VAC, 10A, SPDT
    ✓ IN STOCK!
    $114.00 Buy New $114.00
    $61.52
    RADWELL VERIFIED SUBSTITUTE PLM9805-SUB

    RADWELL VERIFIED SUBSTITUTE

    PLM9805-SUB

    SUBSTITUTE FOR ASEA BROWN BOVERI SYMCOM PLM9805, PHASE MONITOR RELAY, 3-PHASE , PHASE LOSS, PHASE REVERSAL, UNDERVOLTAGE, 480VAC, 10A, SPDT
    ✓ IN STOCK!
    $119.00 Buy New $119.00
    RADWELL VERIFIED SUBSTITUTE PLM6502-SUB

    RADWELL VERIFIED SUBSTITUTE

    PLM6502-SUB

    SUBSTITUTE FOR ASEA BROWN BOVERI SSAC PLM6502, PHASE MONITOR RELAY, 3-PHASE , PHASE LOSS, PHASE REVERSAL, UNDERVOLTAGE, 240VAC, 10A, SPDT
    ✓ IN STOCK!
    $114.00 Buy New $114.00
    ASEA BROWN BOVERI 1SVR730774R3300

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR730774R3300

    (PRICE/EA) CM-PAS.41S THREE-PHASE MON. , 1SVR730774R3300
    ✓ IN STOCK!
    $667.55 Buy Surplus As Low As $400.53
    $400.53
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730830R0400

    ASEA BROWN BOVERI

    1SVR730830R0400

    VOLTAGE MONITORING RELAY, 4 AMP, 24-240 VAC/DC, SCREW TYPE TERMINALS, 2 C/O SPDT CONTACTS, 10 MA / 24 V MINIMUM SWITCHING CAPACITY, -20 TO +60 DEGREE C, IP20/50, (CM-ESS.2S)
    ✓ IN STOCK!
    $668.12 Buy Surplus As Low As $400.87
    $400.87
    ASEA BROWN BOVERI 1SVR630736R1300

    ASEA BROWN BOVERI

    1SVR630736R1300

    CM-UFS.2 THREE-PH MONITOR RELAY
    ✓ IN STOCK!
    $449.00 Buy Surplus As Low As $211.41
    $211.41
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730884R4300

    ASEA BROWN BOVERI

    1SVR730884R4300

    RELAY, MULTIFUNCTIONAL, CM SERIES, 300-500 VAC, 50/60/400 HZ, 2 C/O (SPDT) OUTPUT, 250 V / 4 AMP RATED, ON/OFF TRIPPING DELAY, 3-PHASE, (CM-MPS.43S)
    ✓ IN STOCK!
    $454.00 Buy Surplus As Low As $273.00
    $273.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730885R3300

    ASEA BROWN BOVERI

    1SVR730885R3300

    RMS MONITORING RELAY, MULTIFUNCTION, 4 AMP, 3 PHASE, 180-280 VAC, 2C/O SPDT, DIN-RAIL 22.5 MM, IP50/IP20, (CM-MPS.21S)
    ✓ IN STOCK!
    $397.00 Buy Surplus As Low As $292.94
    $292.94
    Repair Yours $200.00
    ASEA BROWN BOVERI 1SVR730831R0400

    ASEA BROWN BOVERI

    1SVR730831R0400

    VOLTAGE MONITORING RELAY, SPDT, 1 PHASE, 4 AMP, 2 C/O, 110-130 VAC, 10 MA, 8 MM STRIPPING LENGTH, SCREW TYPE TERMINALS, DIN RAIL MOUNT, -20 TO +60 DEGREES C, IP20/50
    ✓ IN STOCK!
    $326.02 Buy Surplus As Low As $247.00
    $247.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730840R0400

    ASEA BROWN BOVERI

    1SVR730840R0400

    CURRENT MONITORING RELAY, 1-4 AMP, 250 VAC, 240 VDC, 3 MA, 750 W, DPDT, SCREW TYPE TERMINAL, DIN RAIL MOUNT, -20 TO +60 DEGREES C, IP20, (CM-SRS.21S)
    ✓ IN STOCK!
    $782.23 Buy Surplus As Low As $469.34
    $469.34
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730840R0700

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR730840R0700

    (PRICE/EA) CM-SRS.M2S CURRENT MON. RELAY , 1SVR730840R0700
    ✓ IN STOCK!
    $411.00 Buy Surplus As Low As $313.00
    $313.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR730830R0500

    ASEA BROWN BOVERI

    1SVR730830R0500

    VOLTAGE MON. RELAY, ROHS COMPLIANT, CM-ESS.MS
    ✓ IN STOCK!
    $411.00 Buy Surplus As Low As $313.00
    $313.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR750487R8300

    ASEA BROWN BOVERI

    1SVR750487R8300

    PHASE MONITORING RELAY, 580VAC, DPDT, 4-AMP, DIN RAIL MOUNT, SCREW TERMINALS, SWITCHING VOLTAGE MAX 24V, SUPPLY VOLTAGE MAX - 580VAC, 3 PHASE
    ✓ IN STOCK!
    $781.48 Buy Surplus As Low As $468.89
    $468.89
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR510730R4400

    ASEA BROWN BOVERI

    1SVR510730R4400

    DISCONTINUED BY MANUFACTURER, GRID FEED MONITORING RELAY, CM RANGE, THREE PHASE, 24 VAC/DC / 230 VAC, (CM-UFD.M32)
    ✓ IN STOCK!
    Buy Surplus As Low As $810.00
    $810.00
    Repair Yours $673.00
    RADWELL VERIFIED SUBSTITUTE SLA-240-ASA-SUB

    RADWELL VERIFIED SUBSTITUTE

    SLA-240-ASA-SUB

    SUBSTITUTE FOR DIVERSIFIED ELECTRONICS SLA-240-ASA, PHASE MONITOR RELAY, 3-PHASE , PHASE LOSS, PHASE REVERSAL, UNDERVOLTAGE, 240VAC, 10A, SPDT
    ✓ IN STOCK!
    $90.00 Buy New $90.00
    BENDER SUD487

    BENDER

    SUD487

    VOLTAGE RELAY, 230-400VAC, 50/60HZ, 12 VA, 10 KA, 3 LED'S (GREEN), IP00/IP30
    ✓ IN STOCK!
    $67.96 Buy Surplus As Low As $18.62
    $18.62
    GENERAL ELECTRIC 12SFF31A1A

    GENERAL ELECTRIC

    12SFF31A1A

    DISCONTINUED BY MANUFACTURER, RELAY, STATIC FREQUENCY, TYPE SFF, 120 V RMS, 24-108 VAC, 48 / 110 / 450 VDC, 44-61 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $1,929.65
    $1,929.65
    Repair Yours $1,700.00
    TELE CONTROLS G2JM5AL20

    TELE CONTROLS

    G2JM5AL20

    CURRENT MONITORING RELAY, OVERLOAD, 3-PH, 5A AC/DC RANGE, MULTIFUNCTION, 2 CO, DPDT, LED INDICATORS, SUPPLY VOLTAGE VIA TR2 MODULES, FOR USE WITH 5A CURRENT TRANSFORMERS
    ✓ IN STOCK!
    $385.00 Buy New $385.00
    $255.00
    Repair Yours $300.00
    GENERAL ELECTRIC 12HGA18L2A

    GENERAL ELECTRIC

    12HGA18L2A

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, 125 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $283.44
    $283.44
    Repair Yours $300.00
    GENERAL ELECTRIC 12CFF23A1A

    GENERAL ELECTRIC

    12CFF23A1A

    DISCONTINUED BY MANUFACTURER, FREQUENCY RELAY, 120 V, 48/125/250 VDC, 60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $649.54
    $649.54
    Repair Yours $539.12
    MARSH BELLOFRAM SAL-575-ALE

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    SAL-575-ALE

    DISCONTINUED BY MANUFACTURER, PHASE MONITOR, 575 V AC, 50/60 HZ, 3 A, 600 V AC RES. RATED CONTACTS, LED INDICATOR, SCREW CLAMP TERMINALS
    ✓ IN STOCK!
    Buy Surplus As Low As $161.56
    $161.56
    Repair Yours $300.00
    AREVA VAJHM53SF147D/M

    AREVA

    VAJHM53SF147D/M

    DISCONTINUED BY MANUFACTURER, TRIPPING RELAY, TYPE VAJ, 110 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $100.02
    $100.02
    ENDRESS & HAUSER TMT142

    ENDRESS & HAUSER

    TMT142

    DISCONTINUED BY MANUFACTURER, VOLTAGE/ PHASE MONITOR, 23 MA, TA+40, +85C
    ✓ IN STOCK!
    Buy Surplus As Low As $826.28
    $826.28
    Repair Yours $747.00
    ASEA BROWN BOVERI 411T4175-HF

    ASEA BROWN BOVERI

    411T4175-HF

    DISCONTINUED BY MANUFACTURER, RELAY, UNDERVOLTAGE PHASE SEQUENCE, 27N TYPE, CIRCUIT SHIELD, DEFINITE CURVE, 0-10 SECOND, 2-C, SINGLE PHASE, 60-110V TAP RANGE, 150V MAX, 50/60 HZ, CONTROL 48/ ...
    ✓ IN STOCK!
    Buy Surplus As Low As $1,275.46
    $1,275.46
    Repair Yours $1,176.26
    SCHWEITZER ENGINEERING SEL-751A-751A51A0X0X71850000

    SCHWEITZER ENGINEERING

    SEL-751A-751A51A0X0X71850000

    DISCONTINUED BY MANUFACTURER, FEEDER PROTECTION RELAY, MODEL SEL-751A, 20 W / 40 VA, 110-250 V, 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $2,055.63
    $2,055.63
    Repair Yours $1,706.17
    CR MAGNETICS CR4395-EH-120-110-A-CD

    CR MAGNETICS

    CR4395-EH-120-110-A-CD

    DISCONTINUED BY MANUFACTURER, CURRENT SENSING RELAY, TIME DELAY: .5-6SEC, TRIP RANGE: 1-10ACA, SUPPLY: 120 +/-10% VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $144.36
    $144.36
    ASEA BROWN BOVERI CM-PVE

    ASEA BROWN BOVERI

    CM-PVE

    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, (1SVR550870R9400)
    ✓ IN STOCK!
    $119.00 Buy Surplus As Low As $72.00
    $72.00
    ASCO 214B69-480VAC

    ASCO

    214B69-480VAC

    DISCONTINUED BY MANUFACTURER, UNDER VOLTAGE MONITOR, 480 VAC, 50/60 HZ, 456V PICK UP, 408V DROP OUT
    ✓ IN STOCK!
    Buy Surplus As Low As $436.49
    $436.49
    Repair Yours $402.54
    ASEA BROWN BOVERI 1SVR630736R0300

    ASEA BROWN BOVERI

    1SVR630736R0300

    CM-UFS.1 THREE-PH MONITOR RELAY
    ✓ IN STOCK!
    $449.00 Buy Surplus As Low As $342.00
    $342.00
    Repair Yours $300.00
    ASEA BROWN BOVERI CM-MPS.41P

    ASEA BROWN BOVERI

    CM-MPS.41P

    VOLTAGE MONITORING RELAY, CM-MPS SERIES, 3 PHASE, 300-500 VAC, 45-65 HZ, DPDT, TIME DELAY: 0.1-30 S, DIN-RAIL MOUNT, (1SVR740884R3300) , 1SVR740884R3300
    ✓ IN STOCK!
    $392.00 Buy Surplus As Low As $298.00
    $298.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR740885R1300

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR740885R1300

    (PRICE/EA) PHASE MONITOR RELAY, 3PH, DPDT, 90-170V; PRODUCT RANGE:CM SERIES; CONTACT CONFIGURATION:DPDT; CONTACT CURRENT:4A; RELAY MOUNTING:DIN RAIL; RELAY TERMINALS:SCREWLESS; SWITCHING VOL ...
    ✓ IN STOCK!
    $408.00 Buy Surplus As Low As $199.00
    $199.00
    Repair Yours $300.00
    ASEA BROWN BOVERI 1SVR760488R8300

    ASEA BROWN BOVERI

    ABB ROBOTICS

    1SVR760488R8300

    THREE PHASE MONITORING RELAY, 450-720 VAC RANGE, 50/60 HZ, 0.1-30 SECOND RANGE, DIN-RAIL MOUNTING, (CM-MPN.62P) , 1SVR760488R8300
    ✓ IN STOCK!
    $548.55 Buy Surplus As Low As $155.68
    $155.68
    Repair Yours $300.00
    ASEA BROWN BOVERI DS951-C16/0.03

    ASEA BROWN BOVERI

    ABB ROBOTICS

    DS951-C16/0.03

    CIRCUIT BREAKER,1+N POLE,230-240VAC,6KA,50-60HZ,16AMP,DIN RAIL,SCREW TERMINALS , DS951-C16/0.03
    ✓ IN STOCK!
    $940.00 Buy Surplus As Low As $715.00
    $715.00
    Repair Yours $352.27
    INGERSOLL RAND RLY1678

    INGERSOLL RAND

    TRANE

    RLY1678

    2/135A CURRENT SENSING RELAY, REPLACES: X13310270-01
    ✓ IN STOCK!
    $373.00 Buy Surplus As Low As $215.00
    $215.00
    Repair Yours $300.00
    INGERSOLL RAND RLY2547

    INGERSOLL RAND

    TRANE

    RLY2547

    10A SPDT ENCLOSED RELAY
    ✓ IN STOCK!
    $64.00 Buy Surplus As Low As $35.49
    $35.49
    Repair Yours Contact Us
    TIME MARK CORP 16-1-L-P

    TIME MARK CORP

    16-1-L-P

    VOLTAGE_FREQUENCY-MONITORS, OVER AND/OR UNDER VOLTAGE MONITOR, 12-30VAC/VDC, SIZE 3.52IN X 2.44IN X 1.75IN
    ✓ IN STOCK!
    $186.00 Buy New $186.00
    $80.36
    Repair Yours $300.00
    TIME MARK CORP 257BM

    TIME MARK CORP

    257BM

    RELAY, 3-PHASE MONITOR, 208/240VAC, SIZE 3.52IN X 2.44IN X 1.75IN, 8 PIN
    ✓ IN STOCK!
    $124.53 Buy New $124.53
    $61.61
    Repair Yours $300.00
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