Product Search

    SEARCH NOW FOR ALL YOUR SCHWEITZER ENGINEERING SOLUTIONS

    Radwell is here to supply you with all your plant floor needs.

    Transmission Distribut. Relays / Phase/Voltage Loss Relay

    Radwell is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder.

    Filter Results
    Results 1-50 of 68.
    SCHWEITZER ENGINEERING SEL-351-03517033554XXX

    SCHWEITZER ENGINEERING

    SEL-351-03517033554XXX

    DISCONTINED BY MANUFACTURER, PROTECTION SYSTEM, SEL-351, DIRECTIONAL OVERCURRENT RELAY, RECLOSING RELAY, FAULT LOCATOR, SELOGIC CONTROL EQUATIONS, POWER SUPPLY RATING:38-200 VDC, 85-140 VAC, ...
    ✓ IN STOCK!
    Buy Surplus As Low As $2,187.00
    $2,187.00
    Repair Yours $2,050.00
    SCHWEITZER ENGINEERING SEL-387-0387504X5HXX4X1

    SCHWEITZER ENGINEERING

    SEL-387-0387504X5HXX4X1

    CURRENT DIFFERENTIAL AND OVERCURRENT RELAY CONTROLLER, SEL-387, PART NUMBER: 0387504X5HXX4X1, CONFIGURATION NUMBER: 387#0104, KEY CODE: 8023, POWER SUPPLY: 125/250V, 120/230 VAC, 50/60 HZ, 2 ...
    ✓ IN STOCK!
    $5,190.30 Buy Surplus As Low As $3,114.18
    $3,114.18
    Repair Yours $2,034.66
    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 $3,510.00
    $3,510.00
    Repair Yours $3,250.00
    SCHWEITZER ENGINEERING 0701000XXX

    SCHWEITZER ENGINEERING

    0701000XXX

    MOTOR PROTECTION RELAY, 24-250VDC/95-240VAC, 50/60HZ, 1AMP
    ✓ IN STOCK!
    $4,429.80 Buy Surplus As Low As $2,657.88
    $2,657.88
    Repair Yours $1,736.24
    SCHWEITZER ENGINEERING SEL-287V-287V02-45X6XHGB

    SCHWEITZER ENGINEERING

    SEL-287V-287V02-45X6XHGB

    RELAY, DIFFERENTIAL LEVEL, VOLTAGE CONTROLLER, FOR GROUNDED SHUNT CAPACITOR BANK PROTECTION
    ✓ IN STOCK!
    $2,669.40 Buy Surplus As Low As $1,601.64
    $1,601.64
    Repair Yours $1,046.26
    SCHWEITZER ENGINEERING SEL-279-279000-47X6XHGX

    SCHWEITZER ENGINEERING

    SEL-279-279000-47X6XHGX

    RELAY, RECLOSING / VOLTAGE / SYNCHRONISM CHECK, SPECIAL SPEC-35, POWER SUPPLY / 15 W MAX / 85-264 VAC / 58-350 VDC / 50/60 HZ, LOGIC INPUT / 0-270 VAC / 125 VDC
    ✓ IN STOCK!
    $1,336.00 Buy Surplus As Low As $882.00
    $882.00
    Repair Yours $554.44
    SCHWEITZER ENGINEERING SEL-351-035170H3554XX1

    SCHWEITZER ENGINEERING

    SEL-351-035170H3554XX1

    RELAY, PHASE AND GROUND DISTANCE, PROTECTION SYSTEM, SEL-351, SPECIAL SPEC-180, STANDARD, LOGIC INPUT / 5 AMP / 125-300 VAC, POWER SUPPLY / 125/250VAC/DC, VERTICAL RACK MOUNT
    ✓ IN STOCK!
    $3,861.00 Buy Surplus As Low As $2,548.80
    $2,548.80
    Repair Yours $1,780.35
    SCHWEITZER ENGINEERING SEL-387E-0387E003X5HXX1X

    SCHWEITZER ENGINEERING

    SEL-387E-0387E003X5HXX1X

    DISCONTINUED BY MANUFACTURER, RELAY, DIFFERENTIAL AND VOLTAGE, SEL-387E, POWER SUPPLY / 40 W / 120 VAC / 48-124 VDC / 50/60 HZ, LOGIC INPUT / 5 AMP / 0-300 VAC / 24 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $5,506.20
    $5,506.20
    Repair Yours $4,050.00
    SCHWEITZER ENGINEERING SEL-351-03517032551XXX

    SCHWEITZER ENGINEERING

    SEL-351-03517032551XXX

    DISCONTINUED BY MANUFACTURER, PROTECTION SYSTEM, SEL-351, DIRECTIONAL OVERCURRENT RELAY, RECLOSING RELAY, FAULT LOCATOR, SELOGIC CONTROL EQUATIONS, POWER SUPPLY RATING: 18-60 VDC, 25 WATTS, ...
    ✓ IN STOCK!
    Buy Surplus As Low As $2,187.00
    $2,187.00
    Repair Yours $2,050.00
    SCHWEITZER ENGINEERING SEL-351-035160H35B4XX1

    SCHWEITZER ENGINEERING

    SEL-351-035160H35B4XX1

    DISCONTINED BY MANUFACTURER, PROTECTION SYSTEM, SEL-351, DIRECTIONAL OVERCURRENT RELAY, RECLOSING RELAY, FAULT LOCATOR, SELOGIC CONTROL EQUATIONS, POWER SUPPLY RATING:38-200 VDC, 85-140 VAC, ...
    ✓ IN STOCK!
    Buy Surplus As Low As $2,187.00
    $2,187.00
    Repair Yours $2,050.00
    SCHWEITZER ENGINEERING SEL-351-035170H3554XXX

    SCHWEITZER ENGINEERING

    SEL-351-035170H3554XXX

    DISCONTINUED BY MANUFACTURER, PROTECTION SYSTEM, SEL-351, P/N: 035170H3554XXX, POWER SUPPLY VOLTAGE: 48/125 VDC, 120 VAC, 50/60 HZ, LOGIC INPUT CONTROL VOLTAGE: 125 VDC, VOLTS AC: 300 WYE, A ...
    ✓ IN STOCK!
    Buy Surplus As Low As $2,108.70
    $2,108.70
    Repair Yours $1,800.00
    SCHWEITZER ENGINEERING SEL-551-0551003X532X

    SCHWEITZER ENGINEERING

    SEL-551-0551003X532X

    DISCONTINUED BY MANUFACTURER, OVERCURRENT PROTECTIVE RELAY, SEL-551, 85-140 VAC, 36-200 VDC, 5.5W MAXIMUM, 125 VDC LOGIC INPUT, EIA-45 SERIAL PORT
    ✓ IN STOCK!
    Buy Surplus As Low As $1,200.00
    $1,200.00
    Repair Yours $996.00
    SCHWEITZER ENGINEERING SEL351R-0351R01X81X1XX1XX

    SCHWEITZER ENGINEERING

    SEL351R-0351R01X81X1XX1XX

    DISCONTINUED BY MANUFACTURER, RECLOSER CONTROL, PROTECTIVE RELAY, SEL351 PROTECTION SYSTEM, SEL-351R, PLUG-IN RECLOSER COMPATIBILITY, AUTOMATIC NETWORK RECONFIGURATION, FAULT LOCATION, SINGL ...
    ✓ IN STOCK!
    Buy Surplus As Low As $3,818.00
    $3,818.00
    Repair Yours $3,138.00
    SCHWEITZER ENGINEERING SEL351A-035131345542XX

    SCHWEITZER ENGINEERING

    SEL351A-035131345542XX

    DISTRIBUTION PROTECTION SYSTEM, PROTECTIVE RELAY, 5 PHASE, 15W, 85-264 VAC / 85-350 VDC POWER SUPPLY, 50/60 HZ, 125 VDC LOGIC INPUT, 300 VAC WYE, 5N
    ✓ IN STOCK!
    $2,544.00 Buy Surplus As Low As $1,441.22
    $1,441.22
    Repair Yours $1,077.30
    SCHWEITZER ENGINEERING 04214415XB0X2H21XXXXX

    SCHWEITZER ENGINEERING

    04214415XB0X2H21XXXXX

    PROTECTION AUTOMATION, 48-125 VOLTS, 35 WATTS, 50/60 HZ
    ✓ IN STOCK!
    $4,500.00 Buy Surplus As Low As $2,970.00
    $2,970.00
    Repair Yours $2,241.00
    SCHWEITZER ENGINEERING 121G00-4256MVGB

    SCHWEITZER ENGINEERING

    121G00-4256MVGB

    SEL-121G, PHASE DISTANCE RELAY, DIRECTIONAL GROUND RELAY, FAULT LOCATOR, 125VAC/DC, 12WATT, AVAILABLE, REBUILT SURPLUS, NEVER USED, REPAIR YOURS, 24 HOUR RUSH REPAIR, 5-10 DAY REPAIR, 2 YEAR ...
    $795.00 Buy Surplus As Low As $398.00
    $398.00
    Repair Yours $378.00
    SCHWEITZER ENGINEERING SEL-121F00-4256MHNB

    SCHWEITZER ENGINEERING

    SEL-121F00-4256MHNB

    PHASE/GROUND DISTANCE RELAY 125VAC/DC 12W 5A 60HZ
    $5,247.00 Buy Surplus As Low As $3,149.00
    $3,149.00
    Repair Yours $2,650.00
    SCHWEITZER ENGINEERING 0351A00H22552XX

    SCHWEITZER ENGINEERING

    0351A00H22552XX

    PROTECTION SYSTEM 20-60VDC 15W MAX POWER 48VDC
    $2,279.00 Buy Surplus As Low As $1,368.00
    $1,368.00
    Repair Yours $1,166.00
    SCHWEITZER ENGINEERING 0387A0105X2X52X

    SCHWEITZER ENGINEERING

    0387A0105X2X52X

    RELAY CURRENT DIFF 18-60DC 24/48VDC 25W SEL-387A
    $4,770.00 Buy Surplus As Low As $2,862.00
    $2,862.00
    Repair Yours $2,385.00
    SCHWEITZER ENGINEERING 0351S6Y48355461

    SCHWEITZER ENGINEERING

    0351S6Y48355461

    PROTECTION SYSTEM RELAY 125VDC 85/140VAC 25W
    $2,544.00 Buy Surplus As Low As $1,527.00
    $1,527.00
    Repair Yours $1,272.00
    SCHWEITZER ENGINEERING 050100-3X561BXB

    SCHWEITZER ENGINEERING

    050100-3X561BXB

    RELAY DUAL OVERCURRENT SEL-501 125VAC/DC 5AMP 60HZ
    $1,431.00 Buy Surplus As Low As $859.00
    $859.00
    Repair Yours $721.00
    SCHWEITZER ENGINEERING 0311B0W413254X1

    SCHWEITZER ENGINEERING

    0311B0W413254X1

    LINE CURRENT DIFFERENTIAL PROTECTION 38-200VDC 5-H
    Buy Surplus As Low As $4,290.00
    $4,290.00
    Repair Yours $3,600.00
    SCHWEITZER ENGINEERING SEL-121H

    SCHWEITZER ENGINEERING

    SEL-121H

    PHASE AND GROUND DISTANCE RELAY
    $7,235.00 Buy Surplus As Low As $3,618.00
    $3,618.00
    Repair Yours $3,437.00
    SCHWEITZER ENGINEERING SEL-421-5

    SCHWEITZER ENGINEERING

    SEL-421-5

    LINE PROTECTION HIGH SPEED W/ SUB-CYCLE ELEMENTS
    $7,346.00 Buy Surplus As Low As $3,673.00
    $3,673.00
    Repair Yours $3,490.00
    SCHWEITZER ENGINEERING 0311L14DD3254XXXX

    SCHWEITZER ENGINEERING

    0311L14DD3254XXXX

    LINE CURRENT DIFFERENTIAL SYSTEM 125VAC 48/125VDC 50/60HZ 1300NM
    Buy Surplus As Low As $4,260.00
    $4,260.00
    Repair Yours $3,550.00
    SCHWEITZER ENGINEERING SEL-751

    SCHWEITZER ENGINEERING

    SEL-751

    DO NOT USE, DISCONTINUED BY MANUFACTURER, FEEDER PROTECTION RELAY, 20W, 24/48V, BASE MODEL ONLY, **UNIT MUST BE CONFIGURED. EACH CONFIGURATION HAS AN ADDITIONAL COST **
    Buy Surplus As Low As $1,140.00
    $1,140.00
    Repair Yours $947.00
    SCHWEITZER ENGINEERING SEL-551C

    SCHWEITZER ENGINEERING

    SEL-551C

    OVERCURRENT/RECLOSING RELAY, 551C#01, 3 OUTPUTS AND 6 LEVEL-SENSITIVE INPUTS (125 VDC CONTROL INPUT VOLTAGE) CONVENTIONAL TERMINAL BLOCKS POWER SUPPLY: 48/125 VDC OR 125 VAC 5 A PHASE, 5 A N ...
    $1,779.00 Buy Surplus As Low As $1,068.00
    $1,068.00
    Repair Yours $887.00
    SCHWEITZER ENGINEERING SEL-700GT

    SCHWEITZER ENGINEERING

    SEL-700GT

    GENERATOR PROTECTION RELAY MODEL 0700GT1A1A0X75850020
    $3,534.00 Buy Surplus As Low As $1,767.00
    $1,767.00
    Repair Yours $1,679.00
    SCHWEITZER ENGINEERING SEL-352

    SCHWEITZER ENGINEERING

    SEL-352

    BREAKER FAILURE RELAY
    $5,046.00 Buy Surplus As Low As $2,523.00
    $2,523.00
    Repair Yours $2,397.00
    SCHWEITZER ENGINEERING SEL-311L-1-0311L1HCA4254XXXX

    SCHWEITZER ENGINEERING

    SEL-311L-1-0311L1HCA4254XXXX

    RELAY, LINE CURRENT DIFFERENTIAL PROTECTION AND AUTOMATION SYSTEM, INPUT / 5AMP / 125VDC, POWER SUPPLY / 125/250VAC/DC, HORIZONTAL RACK MOUNT
    $12,909.00 Buy Surplus As Low As $7,746.00
    $7,746.00
    Repair Yours $4,990.00
    SCHWEITZER ENGINEERING 050120-3X551XXB

    SCHWEITZER ENGINEERING

    050120-3X551XXB

    OBSOLETE, SCHWEITZER SEL-501-2 DUAL UNIVERSAL OVER CURRENT RELAY
    Buy Surplus As Low As $1,380.00
    $1,380.00
    Repair Yours $1,150.00
    SCHWEITZER ENGINEERING SEL-387E

    SCHWEITZER ENGINEERING

    SEL-387E

    ***DO NOT USE / ***INCOMPLETE PART NUMBER / RELAY, DIFFERENTIAL AND VOLTAGE
    Call For Availability
    SCHWEITZER ENGINEERING SEL-551-0551C0AX534X

    SCHWEITZER ENGINEERING

    SEL-551-0551C0AX534X

    DISCONTINUED BY MANUFACTURER, OVERCURRENT PROTECTIVE RELAY, SEL-551, 85-140 VAC, 36-200 VDC, 5.5W MAXIMUM, 125 VDC LOGIC INPUT, EIA-45 SERIAL PORT
    Buy Surplus As Low As $1,110.00
    $1,110.00
    Repair Yours $940.00
    SCHWEITZER ENGINEERING 04515615XB4X4H324XXXX

    SCHWEITZER ENGINEERING

    04515615XB4X4H324XXXX

    SEL-451 WITH CONVENTIONALSECONDARY INPUTS, POWER SUPPLY -- 125-250 VDC OR 110-240 VAC, SECONDARY INPUT CURRENT -- 5 A PHASE, SECONDARY INPUT VOLTAGE -- 300 V PHASE
    $10,731.00 Buy Surplus As Low As $6,439.00
    $6,439.00
    Repair Yours $5,345.00
    SCHWEITZER ENGINEERING 0551C0BX553X

    SCHWEITZER ENGINEERING

    0551C0BX553X

    DISCONTINUED BY MANUFACTURER OVERCURRENT/RECLOSING RELAY, 551C#01, 3 OUTPUTS AND 6 LEVEL-SENSITIVE INPUTS (125 VDC CONTROL INPUT VOLTAGE) CONVENTIONAL TERMINAL BLOCKS POWER SUPPLY: 48/125 V ...
    Buy Surplus As Low As $824.00
    $824.00
    Repair Yours $650.00
    SCHWEITZER ENGINEERING 221F00-4256MVNB

    SCHWEITZER ENGINEERING

    221F00-4256MVNB

    PHASE GROUND RELAY VERTICAL SEL-221F 125VAC/DC
    $3,869.00 Buy Surplus As Low As $2,322.00
    $2,322.00
    Repair Yours $1,961.00
    SCHWEITZER ENGINEERING SEL-351A

    SCHWEITZER ENGINEERING

    SEL-351A

    SCHWEITZER, DISTRIBUTION PROTECTION SYSTEM, 20-60VDC, 15W MAX,
    $1,001.70 Buy Surplus As Low As $601.02
    $601.02
    Repair Yours $471.27
    SCHWEITZER ENGINEERING 20200040X5

    SCHWEITZER ENGINEERING

    20200040X5

    PROCESSOR 125/250VAC/DC 50/60HZ SEL-2020
    Buy Surplus As Low As $3,150.00
    $3,150.00
    Repair Yours $2,650.00
    SCHWEITZER ENGINEERING 0351S61543552X1

    SCHWEITZER ENGINEERING

    0351S61543552X1

    PROTECTION SYSTEM RELAY 24/250V 18/350VDC 50/60HZ
    $5,088.00 Buy Surplus As Low As $3,053.00
    $3,053.00
    Repair Yours $2,544.00
    SCHWEITZER ENGINEERING 0311L05CC3254XX

    SCHWEITZER ENGINEERING

    0311L05CC3254XX

    LINE CURRENT DIFFERENTIAL SYSTEM 48/125V 50/60HZ
    $4,770.00 Buy Surplus As Low As $2,862.00
    $2,862.00
    Repair Yours $2,385.00
    SCHWEITZER ENGINEERING 0311L0HCC3252XX

    SCHWEITZER ENGINEERING

    0311L0HCC3252XX

    LINE CURRENT DIFFERENTIAL SYSTEM 48/125V 50/60HZ
    $4,770.00 Buy Surplus As Low As $2,862.00
    $2,862.00
    Repair Yours $2,385.00
    SCHWEITZER ENGINEERING 071001A0X0X72850100

    SCHWEITZER ENGINEERING

    071001A0X0X72850100

    MOTOR PROTECTION RELAY 40VA 15W 110/240V 50/60HZ
    $4,664.00 Buy Surplus As Low As $2,799.00
    $2,799.00
    Repair Yours $2,332.00
    SCHWEITZER ENGINEERING 0351A032X4E5521

    SCHWEITZER ENGINEERING

    0351A032X4E5521

    PROTECTION SYSTEM RELAY 2U 125/250VAC/DC 5AMP
    $4,293.00 Buy Surplus As Low As $2,576.00
    $2,576.00
    Repair Yours $2,173.00
    SCHWEITZER ENGINEERING 0501000-4X561XXB

    SCHWEITZER ENGINEERING

    0501000-4X561XXB

    RELAY DUAL OVERCURRENT SEL-501 125VAC/DC 5AMP 60HZ
    $1,431.00 Buy Surplus As Low As $859.00
    $859.00
    Repair Yours $721.00
    SCHWEITZER ENGINEERING 251003-4556UHNC

    SCHWEITZER ENGINEERING

    251003-4556UHNC

    DISTRIBUTION RELAY PHASE OVERCURRENT
    Buy Surplus As Low As $1,590.00
    $1,590.00
    Repair Yours $1,350.00
    SCHWEITZER ENGINEERING SEL-3400

    SCHWEITZER ENGINEERING

    SEL-3400

    DISTRIBUTION MODULE IRIG-B 2IN/12OUT 12/24HR LED
    $1,336.00 Buy Surplus As Low As $668.00
    $668.00
    Repair Yours $635.00
    SCHWEITZER ENGINEERING 787#ECBH

    SCHWEITZER ENGINEERING

    787#ECBH

    07872EE1DBD3D79850630, SEL-787-2,-3,-4 TRANSFORMER PROTECTION RELAY
    $7,151.57 Buy Surplus As Low As $4,291.00
    $4,291.00
    Repair Yours $3,562.00
    SCHWEITZER ENGINEERING SEL-311L-0311L1JHD325425XX

    SCHWEITZER ENGINEERING

    SEL-311L-0311L1JHD325425XX

    RELAY, LINE CURRENT DIFFERENTIAL PROTECTION AND AUTOMATION SYSTEM, SEL-311L, SPECIAL SPEC-180, INPUT / 5AMP / 125VDC, POWER SUPPLY / 125 VAC / 48/125 VDC / 50/60 HZ, HORIZONTAL RACK MOUNT
    $5,300.00 Buy Surplus As Low As $2,650.00
    $2,650.00
    Repair Yours $2,518.00
    SCHWEITZER ENGINEERING SEL-221G-221G00-4256MHGB

    SCHWEITZER ENGINEERING

    SEL-221G-221G00-4256MHGB

    DISCONTINUED BY MANUFACTURER, PHASE/GROUND DISTANCE RELAY, POWER SUPPLY, 85-264VAC, 50/60HZ, 15W MAX, 5AMP
    Buy Surplus As Low As $1,818.00
    $1,818.00
    Repair Yours $1,494.00
    SCHWEITZER ENGINEERING SEL-551-0551002X5C2X

    SCHWEITZER ENGINEERING

    SEL-551-0551002X5C2X

    DISCONTINUED BY MANUFACTURER, OVERCURRENT PROTECTIVE RELAY, SEL-551, 85-140 VAC, 36-200 VDC, 5.5W MAXIMUM, 125 VDC LOGIC INPUT, EIA-45 SERIAL PORT
    Buy Surplus As Low As $1,110.00
    $1,110.00
    Repair Yours $940.00
    Next
    1 2