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 authorised 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 authorised dealers. Because Radwell is not an authorised 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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CARLO GAVAZZI
DUB01CD48500V
MONITORING RELAY, 1-PHASE AC/DC OVER OR UNDERVOLTAGE MONITORING RELAY, NOMINAL RANGE 2-500 V AC/DC, SPDT RELAY OUTPUT, 22.5 MM DIN-RAIL HOUSING
✓ IN STOCK!
£84.39
Price with VAT:
£101.27
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SIEMENS
3UG4614-1BR28-0AA3
DIGITAL MONITORING RELAY ASYMMETRY 0-20%, DEFAULT OFF PHASE SEQUENCE, DEFAULT OFF PHASE FAILURE 3 X 160 TO 690 V 50 TO 60 HZ AC UNDERVOLTAGE, DEFAULT 320 V HYSTERESIS, DEFAULT: 5% ON, OFF DE ...
✓ IN STOCK!
£61.42
Price with VAT:
£73.70
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SIEMENS
3UG4513-2BR20
VOLTAGE PHASE MONITOR, 3PHASE RELAY, ADJUSTABLE UNDERVOLTAGE ASYMMETRY 20% FIXED 3 X 160 TO 690 V 50 TO 60 HZ AC HYSTERESIS 5% FIXED DELAY TIME 0-20 S 2 CHANGE-OVER CONTACTS SCREW TERMINAL , ...
✓ IN STOCK!
£77.00
Price with VAT:
£92.40
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SIEMENS
3RK3221-1AA10
EXTENSION MODULE, 3RK3 SERIES, 24 VDC, 4 INPUTS / 2 OUTPUTS, FOR USE W/ SIRIUS 3RK3, DIN RAIL, SCREW TERMINAL, W/O CONNECTION CABLE
✓ IN STOCK!
£179.54
Price with VAT:
£215.45
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MINILEC
VMRD2
DISCONTINUED BY MANUFACTURER, VOLTAGE MONITORING RELAY, 415 VAC, 1120/220/230/240/380/415/440 VAC ± 10% AUX. SUPPLY, 1CO / (2 CO) OUTPUT REPLAY CONTACTS
✓ IN STOCK!
£123.21
Price with VAT:
£147.85
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SYMCOM
601
VOLTAGE MONITOR, MOTORSAVER, 3 PHASE, 11 SETPOINTS, PROGRAMMABLE, 3 DIGIT LED DISPLAY, RESET PUSHBUTTON, 190-480 VAC LINE VOLTAGE, 50/60 HZ
✓ IN STOCK!
£247.95
Price with VAT:
£297.54
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ALLEN BRADLEY
813S-E2CD50
DISCONTINUED BY MANUFACTURER, PHASE MONITOR, MONITORING RANGE 250-690 VAC, 115 VAC, 50/60 HZ, 2 VA
✓ IN STOCK!
£161.39
Price with VAT:
£193.67
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ALLEN BRADLEY
1409-N3
DISCONTINUED BY MANUFACTURER 09/30/2016, ARCING GROUND FAULT DETECTION SENSOR, NEMA5
✓ IN STOCK!
£291.76
Price with VAT:
£350.11
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ALLEN BRADLEY
809-A03E
DISCONTINUED BY MANUFACTURER 2010-02-27, CURRENT RELAY, INSTANTANEOUS TRIP, 4A COIL, 50/60 HZ, 600VAC/VDC, TRIP RANGE: AC:2.1 - 6.1A / DC:1.9 - 5.7 A
✓ IN STOCK!
£285.04
Price with VAT:
£342.05
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GOTRONIC
553100
POWER LINE MONITOR 240VAC
✓ IN STOCK!
£125.01
Price with VAT:
£150.01
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MINILEC
VSP-D1
DISCONTINUED BY MANUFACTURER, PHASE FAILURE RELAY, 240 VAC, UNBALANCE, PHASE SEQUENCE, AUTO REST, 1 CO OUTPUT RELAY, 100-120/220-240/380-440 V AC 20% 50/ 60 HZ
✓ IN STOCK!
£120.65
Price with VAT:
£144.78
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CROUZET
84873026
VOLTAGE MONITORING RELAY, 3 PHASE, 194-528 VAC VOLTAGE SENSING RANGE, 0.1-10S TIME DELAY, DPDT, LED STATUS INDICATION, DIN RAIL MOUNTING
✓ IN STOCK!
£119.70
Price with VAT:
£143.64
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SIEMENS
3UG4651-1AA30
DIGITAL MONITORING RELAY SPEED MONITORING FROM 0.1 TO 2200 REV/MIN OVERSHOOT AND UNDERSHOOT AC/DC 24
✓ IN STOCK!
£106.05
Price with VAT:
£127.26
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CARLO GAVAZZI
PUB01CB2310V
VOLTAGE LEVEL RELAY, MONITORING RELAY, SINGLE PHASE, SUPPLY: 115-230 VAC (50/60 HZ), AC/DC OVER OR UNDER-VOLTAGE MONITORING, 0.1-10 VAC/DC RANGE, SPDT RELAY OUTPUT, 3 VA, 11-PIN, REPLACES: S ...
✓ IN STOCK!
£82.00
Price with VAT:
£98.40
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CARLO GAVAZZI
ELECTROMATIC
SM-170-380
DISCONTINUED BY MANUFACTURER, SEQUENCE VOLTAGE RELAY, 3 PHASE, 220-380 VAC, 50/60 HZ
✓ IN STOCK!
£107.07
Price with VAT:
£128.48
BENDER
RCM420-D-2
GROUND-FAULT MONITOR, SUPPLY: 100-250VAC/DC, RATED INSULATION VOLTAGE: 250V, OPERATING RANGE: 70-300VAC/DC, 42-460HZ, OVERVOLTAGE CAT.: IIII
✓ IN STOCK!
£203.06
Price with VAT:
£243.67
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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!
£11.69
Price with VAT:
£14.03
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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!
£65.61
Price with VAT:
£78.73
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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!
£151.56
Price with VAT:
£181.87
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GENERAL ELECTRIC
ALSTOM
MVAJ11D1BB0751A
DISCONTINUED BY MANUFACTURER, DISCONTINUED BY MANUFACTURE, TRIP AND CONTROL, RELAY, 110-125V
✓ IN STOCK!
£229.47
Price with VAT:
£275.36
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TIME MARK CORP
253
REVERSE PHASE RELAY, MODEL 253, SOLID-STATE, 3 PHASE, 208-480 VAC, SPDT, 8-PIN, SOCKET MOUNT, LED INDICATOR, CSA / UL
✓ IN STOCK!
£57.12
Price with VAT:
£68.54
STAHL
9170-21-12-21S
STAHL ISPAC INTRINSICALLY SAFE DIGITAL INPUT ISOLATOR, (2) NAMUR SENSORS OR (2) DRY CONTACTS INPUT, (2) SPDT RELAY OUTPUT, 110-230 VAC OPERATING VOLTAGE, 9.6 VDC MAXIMUM VOLTAGE, SCREW TERMI ...
✓ IN STOCK!
£194.86
Price with VAT:
£233.83
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ASEA BROWN BOVERI
CM-EFS.2S
VOLTAGE MONITORING RELAY, 24-240VAC, SPDT, 4A @ 250V, SCREW TERMINAL, CM SERIES
✓ IN STOCK!
£138.00
Price with VAT:
£165.60
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ASEA BROWN BOVERI
1SVR550824R9100
PHASE MONITORING RELAY, SINGLE FUNCTION, CM-PFE SERIES, 3 PHASE,4 AMP, 28-440 VAC, 50/60 HZ, 1 C/O (SPDT) OUTPUT, SCREW TYPE TERMINALS, -20 TO +85 DEGREES C, IP20/50, (CM-PFE)
✓ IN STOCK!
£19.68
Price with VAT:
£23.62
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HONEYWELL
R720C-1009
HONEYWELL , R720C-1099, R720C1099, RECEIVER RELAY, 120/208/240/277VAC, 50/60HZ
✓ IN STOCK!
£12.32
Price with VAT:
£14.78
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TE CONNECTIVITY
AMP
KUHP-11D17-48
RELAY, 48VDC, 3/4 HP, 120 VAC, 20 AMP
✓ IN STOCK!
£8.81
Price with VAT:
£10.57
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OMRON
K8DT-AW3CD
RELAY OUTPUT, 24 VAC/VDC, SPDT, 5 AMP, 0.1-30 SECOND DELAY TIME, DIN RAIL MOUNT
✓ IN STOCK!
£72.06
Price with VAT:
£86.47
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TELE CONTROLS
G2BM480V12AFL10
DISCONTINUED BY MANUFACTURER, REAL POWER, TORQUE MONITORING RELAY, 1- OR 3-PH, 480V AC, 12A DIRECT OR VIA CTS, ACTIVE POWER MEASUREMENT, MULTIFUNCTION, LED INDICATION, 1 CO, SPDT RELAY OUTPU ...
✓ IN STOCK!
£303.78
Price with VAT:
£364.54
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OMRON
K8DT-AS1CA
CURRENT MONITORING RLY, SPDT, 240V, DIN, PRODUCT RANGE:K8DT-AS SERIES, CONTACT CONFIGURATION:SPDT, CONTACT CURRENT:-, RELAY MOUNTING:DIN RAIL, CONTACT VOLTAGE VAC:-, RELAY TERMINALS:SCREW, C ...
✓ IN STOCK!
£67.00
Price with VAT:
£80.40
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OMRON
K8DT-PZ2CN
PHASE MONITORING RLY, SPDT, 480V, DIN, PRODUCT RANGE:K8DT-PZ SERIES, CONTACT CONFIGURATION:SPDT, CONTACT CURRENT:-, RELAY MOUNTING:DIN RAIL, RELAY TERMINALS:SCREW, SWITCHING VOLTAGE MAX:-, S ...
✓ IN STOCK!
£70.20
Price with VAT:
£84.24
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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!
£61.02
Price with VAT:
£73.22
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
VBA-208-ALA
SINGLE PHASE VOLTAGE BAND MONITOR/RELAYS
✓ IN STOCK!
£309.20
Price with VAT:
£371.04
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SUA-230-ALA
PHASE MONITOR RELAY, SPDT, 10 AMP AT 240 VAC, 190-270 V ADJUSTABLE, LOCK SHAFT, OCTAL PLUG IN
✓ IN STOCK!
£120.86
Price with VAT:
£145.03
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
PRA-100-AFA
PHASE SEQUENCE MONITOR, 208-480VAC SUPPLY, CONTACTS 10A AT 240VAC, 8PIN SOCKET
✓ IN STOCK!
£172.39
Price with VAT:
£206.87
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
PBD-440-ALE
3 PHASE SEQUENCE & VOLTAGE BAND MONITOR/RELAYS, MAX VOLTAGE 550 VAC, ADJUSTABLE RANGES 390-480 UNDER/440-540 OVER, DPDT, CONTACT RATING 600 VAC, AUTOMATIC RESET
✓ IN STOCK!
£248.68
Price with VAT:
£298.42
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLU-100-ASA
PHASE MONITORING RELAY, SLU-100 SERIES, UNIVERSAL, SPDT CONTACT FORM, 10 AMP, 8 PIN, 550 VAC SUPPLY, 240 V RATING
✓ IN STOCK!
£79.96
Price with VAT:
£95.95
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLM-440-ASE
PHASE MONITOR, TIME DELAY, 440-490 VAC, 50/60 HZ, 3 AMP
✓ IN STOCK!
£357.25
Price with VAT:
£428.70
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLM-230-ASE
PHASE MONITOR, MICROPROCESSOR CONTROLLED, 200-250 VAC, CONTACTS: 10 AMP @ 240 VAC
✓ IN STOCK!
£280.96
Price with VAT:
£337.15
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLE-440-ALE
RELAY, PHASE LOSS, UNBALANCE & UNDER VOLTAGE RELAY
✓ IN STOCK!
£217.92
Price with VAT:
£261.50
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLD-440-ALE
PHASE MONITORING RELAY, 440-480 VAC, DPDT, 3 AMP, 600 VAC, SCREW TERMINATION
✓ IN STOCK!
£292.15
Price with VAT:
£350.58
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLA-440-ALE
PHASE MONITORING/RELAY, PHASE SEQUENCE/LOSS MONITOR, 430-480 VAC, 3 PHASE SUPPLY
✓ IN STOCK!
£171.11
Price with VAT:
£205.33
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MARSH BELLOFRAM
ATC DIVERSIFIED ELECTRONICS
SLA-230-ASA
PHASE MONITOR, 190-270 VAC, 50/60 HZ, CONTACTS 10 AMP @ 240 VAC, RESISTIVE 345 VAC
✓ IN STOCK!
£71.59
Price with VAT:
£85.91
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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!
£345.83
Price with VAT:
£415.00
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MARSH BELLOFRAM
ATC
SLA-220-AFN
DISCONTINUED BY MANUFACTURER, PHASE SEQUENCE, LOSS MONITOR
✓ IN STOCK!
£179.68
Price with VAT:
£215.62
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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!
£83.63
Price with VAT:
£100.36
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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!
£239.88
Price with VAT:
£287.86
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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!
£206.73
Price with VAT:
£248.08
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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!
£226.75
Price with VAT:
£272.10
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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!
£277.09
Price with VAT:
£332.51
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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!
£178.26
Price with VAT:
£213.91
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