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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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLA-230-ALER
PHASE MONITOR/RELAY, PHASE SEQUENCE/LOSS MONITOR, 230V, LOCK SHAFT ADJ, SURFACE MOUNT, MANUAL RESET
✓ IN STOCK!
Repair Yours
$381.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CMU-24-DSA-1
OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMU MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 24 V AC/DC, 50/60 HZ, PLUG-IN ENCLOSURE, CURRENT TRIP POINTS - 0.2 ...
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CMO-120-ASA-1
OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMO MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 120 V AC/DC, 50/60 HZ, PLUG-IN ENCLOSURE, CURRENT TRIP POINTS - 0. ...
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CMI-120-ASE-20
OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMI MODEL, OUTPUT - 10 AMPS @ 120 V AC - RESISTIVE, DPDT, CONTROL VOLTAGE - 120 V AC, 50/60 HZ, CURRENT TRIP POINTS - 4-20 AMP
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
DPR350B
PHASE MONITOR, TIME DELAY, 3 PHASE, 460 VAC, DIN RAIL MOUNT
✓ IN STOCK!
Repair Yours
$300.00
SCHNEIDER ELECTRIC
SQUARE D
RM22TA33
PHASE MONITORING RELAY, RM22 SERIES, 380-480 VAC, 2 NO/NC, 8 AMP/250 VAC, ELECTROMECHANICAL RELAY TYPE, DIN RAIL MOUNT
✓ IN STOCK!
Repair Yours
$300.00
FW MURPHY
OFR500
DISCONTINUED BY MANUFACTURER, RELAY OVER FREQUENCY, FRONT STATUS LEDS, 12 PORTS
✓ IN STOCK!
Buy Surplus As Low As
$311.00
Repair Yours
$300.00
SCHNEIDER ELECTRIC
TELEMECANIQUE
RM4-TA31
DISCONTINUED BY MANUFACTURER, PHASE FAILURE, RELAY, 300V, 5A, RM4
✓ IN STOCK!
Buy Surplus As Low As
$220.01
SCHNEIDER ELECTRIC
SQUARE D
PR-101-PLR
DISCONTINUED BY MANUFACTURER, RELAY PHASE LOSS/REVERSAL 5AMP 120VAC .01OHM 60HZ
✓ IN STOCK!
Buy Surplus As Low As
$60.17
SCHNEIDER ELECTRIC
SQUARE D
GP-200C
DISCONTINUED BY MANUFACTURER, GROUND FAULT RELAY, TYPE GP, 200-1100A, TRIP SETTING
✓ IN STOCK!
Buy Surplus As Low As
$377.78
Repair Yours
$300.00
SCHNEIDER ELECTRIC
MERLIN GERIN
60995
DISCONTINUED BY MANUFACTURER 06/30/21, GROUND FAULT PROTECTOR, 4 POLES, 63 AMP, 240-480 VAC, 50/60 HZ, 30 MA, -25 TO +60 DEGREES C, IP20 / IP40, SUCCESSOR IS M9R81463
✓ IN STOCK!
Buy Surplus As Low As
$1,140.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CMB-120-AFA-1
CURRENT MONITORING RELAY, CMB SERIES, AC GO/NO-GO, 120 V AC, 50/60 HZ, 1 AMPS, SINGLE POLE DOUBLE THROW, 8-PIN OCTAL TERMINATION
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CMU-120-ASA-5
UNDER CURRENT MONITOR, CMU SERIES, 120 VAC, PLUG-IN, 1 TO 5 AMP ADJUSTABLE CURRENT TRIP POINTS, 11 PIN
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CMO-120-ASE-10
OVERCURRENT MONITOR RELAY, CMO SERIES, 24-120 V AC/DC, 50/60 HZ, SURFACE MOUNT, 2-10 AMP ADJUSTABLE TRIP POINTS
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
AC-301-440
THREE PHASE MONITOR, AC-301 SERIES, DELAY-ON-MAKE, 430-480 VAC OPERATING, 2 SECOND DELAY ON DROP OUT
✓ IN STOCK!
Repair Yours
$300.00
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
Repair Yours
$1,855.87
DOLD
IL9075.12/001 AC50...400HZ 400V
DISCONTINUED BY MANUFACTURER, FUSE MONITOR, 3 PHASE, 400 HZ, DE-ENERGIZED ON TRIP, AUTOMATIC RESET
✓ IN STOCK!
Buy Surplus As Low As
$87.48
Repair Yours
$300.00
EMERSON
FISHER ROSEMOUNT
3051CD3A22A1AS1C6M5
DISCONTINUED BY MANUFACTURER, PRESSURE TRANSMITTER, DIRECT MOUNT SEALS, IP66/68, 17.5MA, 9-30VDC
✓ IN STOCK!
Buy Surplus As Low As
$1,588.54
Repair Yours
$1,464.98
DEIF
RMV-112D-DELTA-450VAC-ND+ND-450VAC
PROTECTIVE VOLTAGE RELAY, RMV-112D, COUPLING: DELTA, MEASURING VOLTAGE: 450/260V, MODULE: 450V, SUPPLY: 450 VAC, RELAY B: NOR. DEENERGIZED, RELAY C: NORM. DEENERGIZED, UNDERVOLTAGE: 80-100%, ...
✓ IN STOCK!
Repair Yours
$300.00
WESTINGHOUSE
1875510
DISCONTINUED BY MANUFACTURER, OVER VOLTAGE RELAY, TYPE CV-4, VOLTAGE UNIT, 0.2/2 AMP, 120V AC, 60 HZ
✓ IN STOCK!
Buy Surplus As Low As
$211.81
Repair Yours
$200.00
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
STRUTHERS DUNN RELAYS
A214XBX170
GENERAL PURPOSE, GROUND FAULT INTERRUPT (GFI) RELAY, 115 VAC, 50 HZ8 PIN
✓ IN STOCK!
Repair Yours
$300.00
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!
Repair Yours
$300.00
WESTINGHOUSE
289B432A15
DISCONTINUED BY MANUFACTURER, OVERCURRENT RELAY, 2-6 AMP, 1 PHASE, 60 HZ
✓ IN STOCK!
Buy Surplus As Low As
$190.81
Repair Yours
$300.00
GENERAL ELECTRIC
ALSTOM
MVAJ11D1BB0751A
DISCONTINUED BY MANUFACTURER, DISCONTINUED BY MANUFACTURE, TRIP AND CONTROL, RELAY, 110-125V
✓ IN STOCK!
Buy Surplus As Low As
$253.38
Repair Yours
$300.00
ALLEN BRADLEY
809-A20
INSTANTANEOUS TRIP CURRENT RELAY, 130AMP, NEMA OPEN, 1RP,
✓ IN STOCK!
Buy Surplus As Low As
$2,199.43
SCHWEITZER ENGINEERING
SEL-321-321124256HGB354
RELAY, PHASE AND GROUND DISTANCE, DIRECTION OVERCURRENT RELAY, FAULT LOCATOR, ELECTROMECHANICAL, 4 ZONE
✓ IN STOCK!
Repair Yours
$1,167.75
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
Repair Yours
$1,245.00
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
Repair Yours
$474.00
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!
Repair Yours
$1,304.00
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
$157.57
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLA-230-ALA
PHASE MONITOR RELAY, DPDT, 10A, 240VAC; PRODUCT RANGE:SLA SERIES; CONTACT CONFIGURATION:DPDT; CONTACT CURRENT:10A; RELAY MOUNTING:SOCKET; RELAY TERMINALS:PLUG IN; SWITCHING VOLTAGE MAX:240VA ...
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLA-120-ASA
PHASE MONITOR/RELAY, 3-PHASE, 95-130V ADJ., 10A, PLUG-IN, SLA SERIES, 120VAC, SPDT (1 FORM C)
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CMB-120-AFA-10
CURRENT MONITORING RELAY, CMB SERIES, AC GO/NO-GO, 120 V AC, 50/60 HZ, 10 AMPS, SINGLE POLE DOUBLE THROW, 8-PIN OCTAL TERMINATION
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CDD-120-ALE-20
UNIVERSAL DC CURRENT MONITOR RELAY,
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
CMU-120-ASA-1
OVERCURRENT MONITOR RELAY, AC, W/ MANUAL RESET, CMU MODEL, 10 AMPS RES @ 120 V AC OUTPUT, DPDT, 120 V AC/DC CONTROL, 50/60 HZ, CURRENT TRIP POINTS - 1-5 AMP, 11-PIN, PLUG-IN MOUNT
✓ IN STOCK!
Repair Yours
$200.00
CR MAGNETICS
CR7310-LH-24D-.11-A-CD-ELR-R2
CR7310 - GROUND FAULT SENSING RELAY, SUPPLY VOLTAGE 24 VDC, TRIP RANGE - 0.1 TO 1.0 AAC, TRIP ON DELAY - .5 TO 6 SEC, CALIBRATED DIAL, CRGFS-200 REMOTE CURRENT TRANSFORMER
✓ IN STOCK!
Repair Yours
$200.00
ASEA BROWN BOVERI
CM-EFS.2S
VOLTAGE MONITORING RELAY, 24-240VAC, SPDT, 4A @ 250V, SCREW TERMINAL, CM SERIES
✓ IN STOCK!
Repair Yours
$300.00
CR MAGNETICS
CR4395-EH-120-110-A-CD-ELR-I
AC CURRENT SENSING RELAY, SOLID CORE INTERNAL CT, 50 - 400 HZ FREQ RANGE, 120 VAC +/- 10% POWER SUPPLY, OVERCURRENT DETECTION, NON-LATCHING, 0.5 - 6 SECOND ADJUSTABLE TIME DELAY, 1 - 10 AAC ...
✓ IN STOCK!
Repair Yours
Contact Us
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
PBC-440-ALE
PHASE VOLTAGE MONITORS, 3 PHASE-VOLTAGE MONITOR, DELTA, 390V-540V
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
PBC-120-ALE
PHASE VOLTAGE MONITORS
✓ IN STOCK!
Repair Yours
$300.00
MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLU-0200
PHASE MONITORING RELAY, SPDT, 200-500VAC; PRODUCT RANGE:-; CONTACT CONFIGURATION:SPDT; CONTACT CURRENT:10A; RELAY MOUNTING:SOCKET; RELAY TERMINALS:PLUG IN; SWITCHING VOLTAGE MAX:240VAC; SUPP ...
✓ IN STOCK!
Repair Yours
$300.00
