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  Monitoring Relays (822 items)

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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
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