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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.

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    Results 501-550 of 845.
    MACROMATIC VAKP240A

    MACROMATIC

    VAKP240A

    VOLTAGE MONITOR RELAY FOR 240 VAC, 10 AMP RELAY, DPDT, ADJ PICK UP AND DROP OUT, ADJ DROPOUT DELAY 0.1-10 SECONDS, PLUG-IN
    ✓ IN STOCK!
    $254.68 Buy New $254.68
    $152.81
    Repair Yours $300.00
    ASEA BROWN BOVERI 64418-1V

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    64418-1V

    RELAY
    ✓ IN STOCK!
    $2,018.75 Buy New $2,018.75
    $829.10
    Repair Yours $806.62
    ASEA BROWN BOVERI 609300-K4

    ASEA BROWN BOVERI

    609300-K4

    CURRENT TRANSFORMER POWER SHIELD, 1600/2000 AMP
    ✓ IN STOCK!
    $352.49 Buy Surplus As Low As $141.00
    $141.00
    ASEA BROWN BOVERI 609300K02

    ASEA BROWN BOVERI

    609300K02

    PHASE SENSOR, 600A BREAKING RATE, K800
    ✓ IN STOCK!
    $586.00 Buy Surplus As Low As $230.65
    $230.65
    Repair Yours $300.00
    SCHWEITZER ENGINEERING 751A01ACA0X74851000

    SCHWEITZER ENGINEERING

    751A01ACA0X74851000

    FEEDER PROTECTION RELAY, 110-250 VDC, 110-240 VAC SUPPLY, 50/60 HZ, PUSHBUTTON INTERFACE, DIGITAL DISPLAY
    ✓ IN STOCK!
    $7,460.63 Buy Surplus As Low As $3,015.61
    $3,015.61
    Repair Yours $2,502.96
    GENERAL ELECTRIC 12SFC15386A

    GENERAL ELECTRIC

    12SFC15386A

    DISCONTINUED BY MANUFACTURER, RELAY, TIME OVERCURRENT, 0-1 SECOND DELAY, 1.5-12 AMPS, 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $747.95
    $747.95
    Repair Yours $726.08
    DOLD AN9843.82/013 3AC50/60HZ 415V 1-20S

    DOLD

    AN9843.82/013 3AC50/60HZ 415V 1-20S

    DISCONTINUED BY MANUFACTURER, VOLTAGE RELAY, 1-20S, 3 AC AT 50/60HZ 415V, 3 AMPS AT 250 VOLTS, PANEL MOUNT
    ✓ IN STOCK!
    $777.46 Buy Surplus As Low As $89.76
    $89.76
    Repair Yours $300.00
    CEE YTM 7111

    CEE

    YTM 7111

    ADMITTANCE RELAY / ALTERNATOR LOSS OF FIELD PROTECTION, 7000 SERIES, TIME DELAY / 0.6 TO 6 SECOND / 1-10 SECOND, K1 / 70-300 %, K2 / 5-34 %, 1-5 AMP, 100 V, 50/60 HZ, AUX: CC/DC 110 V, ANSI ...
    ✓ IN STOCK!
    $899.94 Buy Surplus As Low As $287.98
    $287.98
    Repair Yours $300.00
    MARSH BELLOFRAM UOA-0313-DLA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-0313-DLA

    DISCONTINUED BY MANUFACTURER, SINGLE PHASE UNDER VOLTAGE MONITOR, UOA SERIES, UOA-0313, STYLE A, 5-10 VDC SUPPLY VOLTAGE, SENSING VOLTAGE: 50 TO 50 VDC, SUPPLY VOLTAGE: 120 VAC, CONTACTS: 10 ...
    ✓ IN STOCK!
    Buy Surplus As Low As $64.50
    $64.50
    Repair Yours $300.00
    SEL 071001D6X9X71870200

    SEL

    071001D6X9X71870200

    MOTOR PROTECTION RELAY, POWER SUPPLY 110-250 VDC, 110-240 VAC 50/60 HZ, 40 VA/15W, ENCLOSURE TYPE 12, TERMINAL PROTECTION
    ✓ IN STOCK!
    $3,871.43 Buy Surplus As Low As $1,431.06
    $1,431.06
    Repair Yours $1,250.29
    SCHNEIDER ELECTRIC CM4000MG

    SCHNEIDER ELECTRIC

    MERLIN GERIN

    CM4000MG

    DISCONTINUED BY MANUFACTURER, CIRCUIT MONITOR, 4000 SERIES, POWERLOGIC, UP TO 32MB MEMORY, 240 VAC, 300 VDC, 96 MA
    ✓ IN STOCK!
    Buy Surplus As Low As $4,800.00
    $4,800.00
    Repair Yours $4,000.00
    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!
    $419.35 Buy Surplus As Low As $212.53
    $212.53
    Repair Yours $300.00
    ALTECH CORP GFR4D20030

    ALTECH CORP

    GFR4D20030

    EGFP+OL, 20A/480Y/277V AC, 30MA, D TRIP, 3POLE+N,50/60HZ UL1053
    ✓ IN STOCK!
    $252.00 Buy Surplus As Low As $192.00
    $192.00
    ASEA BROWN BOVERI 290B658A09

    ASEA BROWN BOVERI

    290B658A09

    DISCONTINUED BY MANUFACTURER, DIFFERENTIAL RELAY, KD3, SINGLE PHASE, DISTANCE, 290B658R09
    ✓ IN STOCK!
    Buy Surplus As Low As $1,033.12
    $1,033.12
    Repair Yours $952.77
    LITTELFUSE PLM9405

    LITTELFUSE

    PLM9405

    PHASE RELAY, SPDT, 400-480V, SOCKET; PRODUCT RANGE:PLM SERIES; CONTACT CONFIGURATION:SPDT; CONTACT CURRENT:10A; RELAY MOUNTING:SOCKET; RELAY TERMINALS:QUICK CONNECT; SWITCHING VOLTAGE MAX:24 ...
    ✓ IN STOCK!
    $223.74 Buy Surplus As Low As $134.24
    $134.24
    Repair Yours $300.00
    GENERAL ELECTRIC 12HFC21B2A

    GENERAL ELECTRIC

    12HFC21B2A

    DISCONTINUED BY MANUFACTURER, RELAY, OVERCURRENT, 2-50AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $163.05
    $163.05
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CB1A-R-24V

    MATSUSHITA ELECTRIC

    AROMAT

    CB1A-R-24V

    AUTOMOTIVE RELAYS 20AMP 24VDC 1 FORM A
    ✓ IN STOCK!
    $10.60 Buy Surplus As Low As $6.36
    $6.36
    Repair Yours $300.00
    MATSUSHITA ELECTRIC CB1-T-R-12V

    MATSUSHITA ELECTRIC

    AROMAT

    CB1-T-R-12V

    AUTOMOTIVE RELAY, HIGH POWER, SPDT, 40 AMP, 12 V, 85C 185F
    ✓ IN STOCK!
    $8.93 Buy Surplus As Low As $5.36
    $5.36
    Repair Yours Contact Us
    ASEA BROWN BOVERI 1963190

    ASEA BROWN BOVERI

    1963190

    ABB, 1963190, SV VOLTAGE RELAY, 120VAC, 60HZ, SETTINGS 70-150
    ✓ IN STOCK!
    $785.71 Buy Surplus As Low As $355.43
    $355.43
    Repair Yours $300.00
    GENERAL ELECTRIC 12HGA14ALS

    GENERAL ELECTRIC

    12HGA14ALS

    AUXILARY RELAY, 125VDC, 4 SECOND
    ✓ IN STOCK!
    $156.22 Buy Surplus As Low As $74.01
    $74.01
    Repair Yours $300.00
    ALLEN BRADLEY 809-B20E

    ALLEN BRADLEY

    809-B20E

    809-B20E, 809B20E, INSTANTANEOUS TRIP CURRENT RELAY, 130AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $1,201.82
    $1,201.82
    Repair Yours $1,007.58
    DOLD BA 9043/001 3AC 50/60HZ 400V

    DOLD

    BA 9043/001 3AC 50/60HZ 400V

    RELAY, VOLTAGE SENSING, DPDT, 400VAC; PRODUCT RANGE:BA 9043 SERIES; CONTACT CONFIGURATION:DPDT; CONTACT CURRENT:3A; RELAY MOUNTING:DIN RAIL; CONTACT VOLTAGE VAC:230VAC; RELAY TERMINALS:SCREW ...
    ✓ IN STOCK!
    $394.60 Buy Surplus As Low As $129.26
    $129.26
    Repair Yours $300.00
    ASEA BROWN BOVERI WLM645A5S

    ASEA BROWN BOVERI

    SSAC

    WLM645A5S

    SSAC, ASEA BROWN BOVERI, WLM645A5S, VOLTAGE MONITOR THREE PHASE, 200/240VAC, 5SEC TRIP DELAY
    ✓ IN STOCK!
    $162.66 Buy Surplus As Low As $85.61
    $85.61
    Repair Yours $300.00
    SIEMENS 3TK2022-7AM0

    SIEMENS

    FURNAS ELECTRIC CO

    3TK2022-7AM0

    MINIATURE CONTACTOR, FLAT CONNECTOR TERMINAL, 2 NO + 2 NC, SCREW MOUNTING (DIAGONAL), 220VAC, 50-60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $132.00
    $132.00
    MACROMATIC PMP575

    MACROMATIC

    PMP575

    3-PHASE MONITOR RELAY, 575 VAC, 8 PIN PLUG-IN, 10 AMP SPDT RELAY, PHASE LOSS, REVERSAL - FIXED, UNBALANCE, OVER/UNDER VOLTAGE - ADJUSTABLE
    ✓ IN STOCK!
    $215.27 Buy New $215.27
    $126.00
    KEARNEY NATIONAL INC 22.017-03-200-A/4H

    KEARNEY NATIONAL INC

    22.017-03-200-A/4H

    DISCONTINUED BY MANUFACTURER, FAULT INDICATOR CRAB, 200 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $13.79
    $13.79
    GRAINGER 6X555

    GRAINGER

    GRAINGER APPROVED VENDOR

    6X555

    RELAY 35AMP 1POLE N/C POTENTIAL RELAY
    ✓ IN STOCK!
    $25.92 Buy Surplus As Low As $10.71
    $10.71
    Repair Yours Contact Us
    TIME MARK CORP 20

    TIME MARK CORP

    20

    3-PHASE-MONITORS,WITH TRIP AND RESTART DELAYS, 190-480VAC, SIZE 3.91IN X 2.2IN X 2.3IN
    ✓ IN STOCK!
    $154.00 Buy New $154.00
    $76.00
    Repair Yours Contact Us
    ASEA BROWN BOVERI CM-ESS.1S

    ASEA BROWN BOVERI

    CM-ESS.1S

    VOLTAGE MONITORING RELAY, SPDT, 4 AMP, 250 VAC, 750 MW, 81-12 AWG, SCREW TYPE TERMINALS, DIN RAIL MOUNT, -40 TO +85 DEGREE C, (1SVR730830R0300)
    ✓ IN STOCK!
    $708.35 Buy Surplus As Low As $425.01
    $425.01
    Repair Yours $300.00
    TELE CONTROLS E1PF480Y/277VSY01

    TELE CONTROLS

    E1PF480Y/277VSY01

    PHASE LOSS MONITOR, PHASE BALANCE, PHASE ROTATION, PHASE SEQUENCE 3-PH, 208-380V AC, 1 CO, SPDT RELAY OUTPUT, LED INDICATORS, ADJUSTABLE PHASE BALANCE
    ✓ IN STOCK!
    $84.74 Buy New $84.74
    $50.85
    Repair Yours $300.00
    DEIF RMV-112D-DELTA-220VAC-ND+ND-220VAC

    DEIF

    RMV-112D-DELTA-220VAC-ND+ND-220VAC

    PROTECTIVE VOLTAGE RELAY, RMV-112D, COUPLING: DELTA, MEASURING VOLTAGE: 220/127V, MODULE: 220V, SUPPLY: 220VAC, RELAY B: NORM. DEENERGIZED, RELAY C: NORM. DEENERGIZED, UNDERVOLTAGE: 80-100%, ...
    ✓ IN STOCK!
    $754.41 Buy Surplus As Low As $267.16
    $267.16
    Repair Yours $300.00
    ASCO 214B69-120VAC

    ASCO

    214B69-120VAC

    DISCONTINUED BY MANUFACTURER, UNDER VOLTAGE MONITOR, 120 V AC, 50/60 HZ, 114 V PICK UP, 102 V DROP OUT
    ✓ IN STOCK!
    Buy Surplus As Low As $92.75
    $92.75
    Repair Yours $300.00
    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
    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
    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
    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 $2,098.19
    $2,098.19
    Repair Yours $980.00
    ASEA BROWN BOVERI DDA204A-63/0.03

    ASEA BROWN BOVERI

    DDA204A-63/0.03

    SENSOR, 63A, 7.6W, 4POLE, 230/400V, 30MA
    ✓ IN STOCK!
    $480.00 Buy Surplus As Low As $365.00
    $365.00
    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!
    $160.59 Buy New $160.59
    $91.14
    Repair Yours Contact Us
    ASEA BROWN BOVERI 1SVR550881R9400

    ASEA BROWN BOVERI

    1SVR550881R9400

    (PRICE/EA) CM-PBE PHASE LOSS MONI. 3PH.+ N , 1SVR550881R9400
    ✓ IN STOCK!
    $131.00 Buy Surplus As Low As $100.00
    $100.00
    Repair Yours $300.00
    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!
    $416.50 Buy Surplus As Low As $183.50
    $183.50
    Repair Yours $200.00
    MACROMATIC PCPU

    MACROMATIC

    PCPU

    MONITOR RELAY, 3-PHASE, 190-500VAC, 8 PIN SPDT, 10AMP, PHASE REVERSAL - FIXED TRIP
    ✓ IN STOCK!
    $108.95 Buy New $108.95
    $44.00
    BENDER RCMS460-D-2

    BENDER

    RCMS460-D-2

    MULTI-CHANNEL GROUND FAULT MONITOR, UP TO 12 SEPARATE CHANNELS, TRIP VALUE IS ADJUSTABLE FROM 6 MA TO 20 A, 70-276 VAC (42-460 HZ), 70-276 VDC, FOR DC AND MIXED AC/DC SYSTEMS, B94053002
    ✓ IN STOCK!
    $1,831.35 Buy Surplus As Low As $1,007.25
    $1,007.25
    Repair Yours $836.01
    BENDER RCMA420-D-1

    BENDER

    RCMA420-D-1

    GROUND-FAULT MONITOR, FOR GROUNDED AND HIGH-RESISTANCE, 10MA-500MA, RMS MEASURMENT VALUES
    ✓ IN STOCK!
    $1,521.47 Buy Surplus As Low As $441.82
    $441.82
    BENDER RCM420-D-1

    BENDER

    RCM420-D-1

    GROUND-FAULT MONITOR, 10 AMP, 460 VAC, 94 VDC, 42- 2000 HZ, 10 MA, 1X NO/NC, START UP DELAY, LED INDICATOR, SCREW TYPE TERMINAL, DIN RAIL MOUNT
    ✓ IN STOCK!
    $957.00 Buy Surplus As Low As $423.02
    $423.02
    Repair Yours $390.00
    ASEA BROWN BOVERI 64418-1X

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    64418-1X

    RELAY, 1 AMP, 300 VDC
    ✓ IN STOCK!
    $1,558.00 Buy New $1,558.00
    $630.91
    Repair Yours $612.47
    ASEA BROWN BOVERI 64418-1W

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    64418-1W

    RELAY
    ✓ IN STOCK!
    $1,411.25 Buy New $1,411.25
    $1,085.57
    Repair Yours $810.92
    ASEA BROWN BOVERI 64418-1RR

    ASEA BROWN BOVERI

    BALDOR RELIANCE

    64418-1RR

    DISCONTINUED BY MANUFACTURER, RELAY, 300 VOLT, 1 AMP, 2.5 VOLT DC
    ✓ IN STOCK!
    Buy Surplus As Low As $1,266.89
    $1,266.89
    Repair Yours $946.37
    MARSH BELLOFRAM UOA-240-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-240-ALA

    VOLTAGE MONITORING RELAY, UOA SERIES, 205-250 VAC DROP-OUT, 215-260 VAC PICK-UP, 10 V HYSTERESIS, LOCKNUT ADJUSTMENT, DPDT, 8-PIN OCTAL
    ✓ IN STOCK!
    $349.90 Buy New $349.90
    $209.94
    Repair Yours $300.00
    MARSH BELLOFRAM UOA-208-ALA

    MARSH BELLOFRAM

    ATC DIVERSIFIED ELECTRONICS

    UOA-208-ALA

    SINGLE PHASE UNDER VOLTAGE MONITOR/RELAY
    ✓ IN STOCK!
    $347.52 Buy New $347.52
    $208.51
    Repair Yours $300.00
    SCHWEITZER ENGINEERING SEL-221G-221G05-4256MHGB

    SCHWEITZER ENGINEERING

    SEL-221G-221G05-4256MHGB

    DISCONTINUED BY MANUFACTURER, PHASE/GROUND DISTANCE RELAY, POWER SUPPY 125VAC/DC 14W, LOGIC INPUT 125VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $1,836.64
    $1,836.64
    Repair Yours $1,524.41
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