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  Monitoring Relays (822 items)

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Eaton Relay Cover / 1793525 (2 offers) 
Eaton Supply Monitoring RelayThe Eaton supply monitoring relay is an ideal protection device for a wide range of switchgear applications. Monitoring a 3 phase power supply is important to protect t...
Eaton
184759 EMR6-PH22
from £ 10.435*
per piece
 
 piece
Eaton Sealing Cover / 1793526 (2 offers) 
Eaton Supply Monitoring RelayThe Eaton supply monitoring relay is an ideal protection device for a wide range of switchgear applications. Monitoring a 3 phase power supply is important to protect t...
Eaton
184760 EMR6-PH45
from £ 10.435*
per piece
 
 piece
Siemens 5TG8222 circuit breaker (1 offer) 
Siemens 5TG8222
Siemens
5TG8222
£ 13.098*
per piece
 
 piece
Relpol Phase, Voltage Monitoring Relay, 3 Phase, SPDT, Maximum of 552 V, DIN Rail / 9143945 (1 offer) 
Europa Components ECPF Series. Europa Components professional range of phase loss and phase failure monitoring relays.
Relpol
ECPF03
£ 22.87*
per piece
 
 piece
Omron Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail / 2157855 (4 offers) 
The Omron K8DS-PH series are phase-sequence phase-loss relay, using voltage detection method. Distinguishes between correct phases, phase sequence, and phase loss when power is turned ON. Its Outpu...
Omron
K8DSPH1
from £ 24.76*
per piece
 
 piece
Omron Phase Monitoring Relay, 3 Phase, SPST, DIN Rail / 1113136 (3 offers) 
K8DT-PH Three Phase Sequence and Loss Monitor. Omron K8DT-PH three phase sequence and phase loss monitor protects motors and other equipment from unstable voltages, detecting phase sequence and pha...
Omron
K8DT-PH1TN
from £ 25.66*
per piece
 
 piece
Eaton Monitoring Relay, DPST, DIN Rail / 131791 (2 offers) 
Contact Configuration = DPST Mounting Type = DIN Rail Frequency Sensing Range = 50Hz Temperature Sensing Range = -20 → +45°C Series = Z-TN Standards Met = RoHS Compliant°C
Eaton
265574 Z-TN230/SS
from £ 27.18*
per piece
 
 piece
Omron Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail / 1113135 (3 offers) 
K8DT-PH Three Phase Sequence and Loss Monitor. Omron K8DT-PH three phase sequence and phase loss monitor protects motors and other equipment from unstable voltages, detecting phase sequence and pha...
Omron
K8DT-PH1CN
from £ 27.90*
per piece
 
 piece
Omron Temperature Monitoring Relay, 1 Phase / 2157270 (2 offers) 
The Omron thermistor motor protection relay monitor temperature rise through internal motor loss. This relay is used for phase sequence, phase loss, and temperature monitoring. It has IP20 degree o...
Omron
K8AKTS1100240VAC
from £ 31.017*
per piece
 
 piece
Relpol Phase, Voltage Monitoring Relay, 3 Phase, SPDT, Maximum of 552 V, DIN Rail / 9143957 (1 offer) 
Europa Components ECPF Series. Europa Components professional range of phase loss and phase failure monitoring relays.
Relpol
ECPF08
£ 32.512*
per piece
 
 piece
ABB Temperature Monitoring Relay, 1 Phase, SPDT, DIN Rail / 8764995 (4 offers) 
Monitoring Application = Temperature Electrical Phase = 1 Contact Configuration = SPDT Mounting Type = DIN Rail Time Delay = <100ms Frequency Sensing Range = 50 → 60Hz Temperature Sensitivity = Ove...
ABB
1SVR730700R2100 CM-MSS.13S
from £ 32.66*
per piece
 
 piece
ABB Temperature Monitoring Relay, SPDT, DIN Rail / 8764998 (3 offers) 
Monitoring Application = Temperature Contact Configuration = SPDT Mounting Type = DIN Rail Time Delay = <100ms Temperature Sensitivity = Overtemperature, Winding Temperature Series = CM-MSS Height ...
ABB
1SVR730700R0100 CM-MSS.12S
from £ 32.75*
per piece
 
 piece
GIC Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail / 7943935 (2 offers) 
GIC Supply Monitoring SM Range. GIC's profesional range of single and three phase supply monitors that are feature rich for industrial and agricultural use. The range covers phase loss/phase revers...
GIC
MA51BC
from £ 32.82*
per piece
 
 piece
Broyce Control Temperature Monitoring Relay, SPDT, DIN Rail / 1883543 (1 offer) 
The product is used in conjunction with an external PTC thermistor which are typically embedded in motors. It will monitor the resistance of the thermistor and if this increases above the fixed thr...
Broyce Control
LTMR 100-230V AC/DC
£ 33.17*
per piece
 
 piece
ABB Phase Monitoring Relay, 1, 3 Phase, SPST, 220 → 240V ac, DIN Rail / 4429455 (2 offers) 
Monitoring Application = Phase Electrical Phase = 1, 3 Voltage Sensing Range = 220 → 240V ac Mounting Type = DIN Rail Phase Sensitivity = Neutral Loss, Phase Loss Time Delay = 150ms Series = CM-PBE...
ABB
1SVR550881R9400
from £ 33.68*
per piece
 
 piece
ABB CM-PVE electrical relay (2 offers) 
The CM-PVE relay is from the CM three-phase monitors range. This relay operates with a rated control supply voltage / three-phase measuring voltage of 320-460 V AC and has a 1 n/o output (closed ci...
ABB
1SVR550871R9500
from £ 35.94*
per piece
 
 piece
ABB CM-PFE electrical relay (4 offers) 
The CM-PFE relay is from the CM three-phase monitors range. This relay operates with a rated control supply voltage / three-phase measuring voltage of 208-440 V AC and has a 1 c/o output (closed ci...
ABB
1SVR550824R9100
from £ 36.41*
per piece
 
 piece
Relpol Phase, Voltage Monitoring Relay, 3 Phase, SPDT, Maximum of 552 V, DIN Rail / 9143954 (1 offer) 
Europa Components ECPF Series. Europa Components professional range of phase loss and phase failure monitoring relays.
Relpol
ECPF05
£ 36.54*
per piece
 
 piece
ABB CM-PVE electrical relay (3 offers) 
The CM-PVE relay is from the CM three-phase monitors range. This relay operates with a rated control supply voltage / three-phase measuring voltage of 185-265 V AC and has a 1 n/o output (closed ci...
ABB
1SVR550870R9400
from £ 36.55*
per piece
 
 piece
Omron Temperature Monitoring Relay, SPDT / 2157853 (2 offers) 
The Omron K8AK-TS/-PT series are thermistor motor protection relays, which monitor temperature rise through internal motor loss. Temperature, phase sequence, and phase loss monitoring with the DIN ...
Omron
K8AKTS124VACDC
from £ 36.88*
per piece
 
 piece
Finder Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail / 7892755 (3 offers) 
70 Series. Electronic voltage/phase loss and rotation monitoring relays for single and three-phase applications. 70.11 - 70.31 - 70.41 Series - Electronic voltage monitoring relays for single and t...
Finder
70.61.8.400.0000
from £ 37.05*
per piece
 
 piece
Siemens Thermistor Motor Protection Monitoring Relay, SPDT, DIN Rail / 1752269 (2 offers) 
Thermistor motor protection relay Compact evaluation unit 17.5 mm enclosure screw terminal 1 change-over contact US = 24 V AC/DC Auto-reset suitable for bimetallic switch Supply =output voltage 1 L...
Siemens
3RN2000-1AA30
from £ 37.15*
per piece
 
 piece
Siemens Thermistor Motor Protection Monitoring Relay, SPDT, DIN Rail / 1752271 (2 offers) 
Siemens Thermistor Motor Protection RelayThe Siemens thermistor motor protection relay is a reliable over temperature protection device that saves motors from overloading. The relay has a mechanism...
Siemens
3RN2000-2AA30
from £ 37.21*
per piece
 
 piece
ABB Temperature Monitoring Relay, 1 Phase, SPST, DIN Rail / 4429405 (1 offer) 
Monitoring Application = Temperature Electrical Phase = 1 Contact Configuration = SPST Mounting Type = DIN Rail Minimum Current Sensed = 2A Maximum Current Sensed = 4A Time Delay = <100ms Frequency...
ABB
1SVR550801R9300
from £ 37.23*
per piece
 
 piece
GIC Voltage Monitoring Relay, 3 Phase, SPDT, 208 → 480V ac, DIN Rail / 7943941 (1 offer) 
GIC Supply Monitoring SM Range. GIC's profesional range of single and three phase supply monitors that are feature rich for industrial and agricultural use. The range covers phase loss/phase revers...
GIC
MG21DH
from £ 39.274*
per piece
 
 piece
GIC Frequency Monitoring Relay, 2 Phase, SPDT, DIN Rail / 7943945 (1 offer) 
GIC Frequency Monitoring Series PD225. Professional range of frequency monitoring relays for industrial and agricultural needs. Wide auxiliary supply voltage 110 to 240 vac or 220 to 440 vac Over f...
GIC
MI81BL
from £ 39.67*
per piece
 
 piece
ABB Phase Monitoring Relay, 1, 3 Phase, SPST, DIN Rail / 4429001 (2 offers) 
CM-PBE Phase Loss Monitor. Monitors 1-phase ; 3-phase supply voltages for phase failure. On fault, relay de-energizes ; yellow LED turns off 5% fixed hysteresis 0.5 sec fixed OFF delay
ABB
1SVR550882R9500
from £ 40.13*
per piece
 
 piece
Lovato Level Monitoring Relay, SPDT-C/O, DIN Rail / 2247399 (2 offers) 
The Lovato level monitoring relays It has IP20 IEC degree of protection. It has double insulation between each supply, electrodes and output relay circuits.It is EAC and UL certified
LOVATO Electric
LVM20A240
from £ 40.49*
per piece
 
 piece
Lovato Monitoring Relay / 2247398 (2 offers) 
The Lovato level monitoring relays It has IP20 IEC degree of protection. It has double insulation between each supply, electrodes and output relay circuits.It is EAC and UL certified
LOVATO Electric
LVM20A024
from £ 40.57*
per piece
 
 piece
Siemens Monitoring Relay, SPDT, 24 → 240V ac/dc, DIN Rail / 1752272 (2 offers) 
Siemens Thermistor Motor Protection RelayThe Siemens thermistor motor protection relay is a reliable protection device that saves motors from overloading. The relay has a mechanism for advanced mon...
Siemens
3RN2000-2AW30
from £ 40.95*
per piece
 
 piece
Carlo Gavazzi Phase Monitoring Relay, 3 Phase, SPDT, 177 → 550V ac, DIN Rail / 8577662 (3 offers) 
Over Voltage - Over Current Monitoring Relay. Monitoring relays from Carlo Gavazzi can also be used as 1-phase or 3- phase over current monitoring relays when connected with MI or MP current transf...
Carlo Gavazzi
DPA51CM44
from £ 41.09*
per piece
 
 piece
RS PRO Voltage Monitoring Relay, 1 Phase, SPDT, 12 → 24V dc, DIN Rail / 1026130 (1 offer) 
RS PRO Voltage Monitoring Relay With SPDT Contacts, UndervoltageThis RS PRO relay monitors undervoltage to protect motors and equipment from being damaged by blowouts. The multi timer can sense a m...
RS Pro
1026130
from £ 41.105*
per piece
 
 piece
Carlo Gavazzi Current Monitoring Relay, 1 Phase, SPST, DIN Rail / 8577072 (2 offers) 
Carlo Gavazzi Over Current Monitor. Small current monitoring relay combined with built-in current transformer with a solid state output. Easily installed via a 2 wire connection. 12mm hole allows f...
Carlo Gavazzi
DIA53S72450A
from £ 42.33*
per piece
 
 piece
GIC Frequency Monitoring Relay, 2 Phase, SPDT, 220 → 440V ac, DIN Rail / 7943954 (1 offer) 
GIC Frequency Monitoring Series PD225. Professional range of frequency monitoring relays for industrial and agricultural needs. Wide auxiliary supply voltage 110 to 240 vac or 220 to 440 vac Over f...
GIC
MI91BL
from £ 42.48*
per piece
 
 piece
Finder Level Monitoring Relay, 1 Phase, SPDT, DIN Rail / 7761594 (3 offers) 
72 Series - Monitoring Relays. The 72 series of relays from Finder are level control relays for conductive liquids. Sensitivity range (5 to 150) kΩ adjustable Delay time (0.5s or 7s) switch selecta...
Finder
72.01.9.024.0000
from £ 42.84*
per piece
 
 piece
Finder Level Monitoring Relay, 1 Phase, SPDT, DIN Rail / 7761575 (2 offers) 
72 Series - Monitoring Relays. The 72 series of relays from Finder are level control relays for conductive liquids. Sensitivity range (5 to 150) kΩ adjustable Delay time (0.5s or 7s) switch selecta...
Finder
72.01.8.024.0000
from £ 42.86*
per piece
 
 piece
Finder Monitoring Relay, 1 Phase, DPST, DIN Rail / 7888642 (3 offers) 
72 Series. Special relay for alternating loads. Suitable for applications with pumps, compressors, air conditioning or refrigeration units. 2 independent NO output, 12 A 2 independent control signa...
Finder
72.42.0.024.0000
from £ 42.87*
per piece
 
 piece
Finder Monitoring Relay, 1 Phase, DPST, DIN Rail / 7888646 (3 offers) 
72 Series. Special relay for alternating loads. Suitable for applications with pumps, compressors, air conditioning or refrigeration units. 2 independent NO output, 12 A 2 independent control signa...
Finder
72.42.0.230.0000
from £ 42.89*
per piece
 
 piece
Finder Level Monitoring Relay, 1 Phase, SPDT, DIN Rail / 7761585 (3 offers) 
72 Series - Monitoring Relays. The 72 series of relays from Finder are level control relays for conductive liquids. Sensitivity range (5 to 150) kΩ adjustable Delay time (0.5s or 7s) switch selecta...
Finder
72.01.8.240.0002
from £ 42.91*
per piece
 
 piece
ABB Temperature Monitoring Relay, 1 Phase, DPDT, DIN Rail / 8765020 (3 offers) 
Some products also have the ATEX approval for the use in hazardous areas. CM-MSS Series Thermistor Motor Protection Relays. Heavy duty starting Increased switching frequency High ambient temperatur...
ABB
1SVR740700R2200 CM-MSS.23P
from £ 42.97*
per piece
 
 piece
Finder Level Monitoring Relay, 1 Phase, SPDT, DIN Rail / 7761588 (2 offers) 
72 Series - Monitoring Relays. The 72 series of relays from Finder are level control relays for conductive liquids. Sensitivity range (5 to 150) kΩ adjustable Delay time (0.5s or 7s) switch selecta...
Finder
72.01.8.125.0000
from £ 43.05*
per piece
 
 piece
Broyce Control Phase Monitoring Relay, 3 Phase, 320 → 490V ac, DIN Rail / 2061444 (1 offer) 
The Broyce Control monitors it’s own three-phase supply and indicates the status of each connected phase along with whether the phase sequence is correct or not. If a phase is lost, the correspondi...
Broyce Control
LPPI
£ 43.07*
per piece
 
 piece
ABB Temperature Monitoring Relay, DPDT, DIN Rail / 8765014 (3 offers) 
Monitoring Application = Temperature Contact Configuration = DPDT Mounting Type = DIN Rail Time Delay = <100ms Frequency Sensing Range = 50 → 60Hz Temperature Sensitivity = Overtemperature, Winding...
ABB
1SVR730700R0200 CM-MSS.22S
from £ 43.08*
per piece
 
 piece
ABB Temperature Monitoring Relay, DPDT, DIN Rail / 8765017 (3 offers) 
Some products also have the ATEX approval for the use in hazardous areas. CM-MSS Series Thermistor Motor Protection Relays. Heavy duty starting Increased switching frequency High ambient temperatur...
ABB
1SVR740700R0200 CM-MSS.22P
from £ 43.12*
per piece
 
 piece
RS Pro
1026135
from £ 43.184*
per piece
 
 piece
ABB CM-MSS.23S electrical relay Black, Grey (4 offers) 
The CM-MSS.23S belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 110-130 V AC and 220-240 V AC and has a 2 c/o (SPDT) output with con...
ABB
1SVR730700R2200
from £ 43.21*
per piece
 
 piece
Siemens Thermistor Motor Protection Monitoring Relay, SPDT, 24 → 240V ac/dc, DIN Rail / 1752270 (2 offers) 
Siemens Thermistor Motor Protection RelayThe Siemens thermistor motor protection relay is a reliable over temperature protection device that saves motors from overloading. The relay has a mechanism...
Siemens
3RN2000-1AW30
from £ 43.44*
per piece
 
 piece
RS PRO Phase Monitoring Relay, 3 Phase, DIN Rail, Surface Mount / 2257384 (1 offer) 
RS PRO Phase Sequence/Failure IndicatorRS PRO is proud to introduce this high-quality monitoring relay. This device is a 3-Phase indicator used for monitoring a 3-wire supply while providing a visu...
RS Pro
2257384
£ 43.541*
per piece
 
 piece
Schneider Electric
RM22TG20
from £ 44.00*
per piece
 
 piece
Finder Level Monitoring Relay, 1 Phase, SPDT, DIN Rail / 7761579 (3 offers) 
72 Series - Monitoring Relays. The 72 series of relays from Finder are level control relays for conductive liquids. Sensitivity range (5 to 150) kΩ adjustable Delay time (0.5s or 7s) switch selecta...
Finder
72.01.8.024.0002
from £ 44.28*
per piece
 
 piece
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