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  Monitoring relays  (1,030 offers of 5,352,881 product items)

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Extech Power Quality Analyser, 3-Phase, 1200A Max, 600V Max / 2675660 (1 offer) 
Absolute Maximum Current Measurement = 1200A Absolute Maximum Power Measurement = 9990kW Number of Phases = 3 Maximum Voltage = 600V Best Voltage Measurement Accuracy = ±0.5
Extech
382100
£ 2,086.732*
per piece
 
 piece
Dold Standstill Monitoring Relay, 1, 3 Phase, 3PDT, DIN Rail / 1812782 (1 offer) 
Safe standstill detection on 3and single-phase motors No external sensors necessary Independent of direction Broken wire detection Forcibly guided safety contacts: 3 NO contacts, 1 NC contact for A...
DOLD
LH5946.48/61 20-400mV UH=DC24V 0,2-6s
£ 627.453*
per piece
 
 piece
ABB CM-MPS.21P electrical relay Grey (2 offers) 
The CM-MPS.21P is a multifunctional relay from the CM three-phase monitors range. It operates with a rated control supply voltage / three-phase measuring voltage of 180-280 V AC 50/60 Hz and has a ...
ABB
1SVR740885R3300
from £ 98.67*
per piece
 
 piece
Dold Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail / 2913150 (1 offer) 
Undervoltage relay for detecting short interruptions, IL9079. The IL9079 is an undervoltage relay for detecting short interruptions. Enclosure version for the IL 9079 has a depth of 59 mm. Terminal...
DOLD
IL9079.12/002 3AC230/400V 0.55-1.05UN 0.2-2S
£ 235.333*
per piece
 
 piece
Siemens Phase Monitoring Relay, 3 Phase, DPDT, DIN Rail / 2033944 (2 offers) 
The Siemens analog monitoring relay used for network monitoring relay with analog setting. It used spring type of terminal and it has LED display. It use snap-on mounting type.Ambient temperature i...
Siemens
3UG4512-2BR20
from £ 79.14*
per piece
 
 piece
Dold Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail / 1812794 (1 offer) 
Detection of undervoltage in 3-phase systems Without separately auxiliary voltage (internal supply from all 3 phases) LED indication for operation voltage and contact position De-energised on trip ...
DOLD
RK9871.72 3/N AC400/230V 50/60Hz
£ 112.336*
per piece
 
 piece
Module: voltage monitoring relay; for DIN rail mounting; DPDT (1 offer) 
Manufacturer: ABB Mounting: for DIN rail mounting Operating temperature: -25...60°C Kind of output 1: DPDT Power supply: from tested wiring system IP rating: IP20 Leads: spring clamps Body dimensio...
ABB
CM-MPN.72P
from £ 154.34*
per piece
 
 piece
Fluke Three Phase Power Measurement Logger (1 offer) 
The Fluke 1732 and 1734 Three Phase Electrical Energy loggers deliver easy to use three phase power measurement data for discovering sources of electrical energy waste, overloaded circuits and help...
Fluke
4706548
£ 3,119.49*
per piece
 
 piece
Dold Standstill Monitoring Relay, 1, 3 Phase, DPDT, DIN Rail / 2408844 (2 offers) 
BD5936.17 - Standstill monitor. Wire breakage detection in the measurement circuit Positively driven output contacts: 2 NO, 2 NC for 250 Vac LED displays for motor standstill, wire breakage and ope...
DOLD
BD5936.17 AC50/60Hz 230V
from £ 314.02*
per piece
 
 piece
Module: voltage monitoring relay; for DIN rail mounting; DPDT (1 offer) 
Manufacturer: LOVATO ELECTRIC Mounting: for DIN rail mounting Operating temperature: -20...60°C Kind of output 1: DPDT Power supply: from tested wiring system IP rating: IP20 at terminal side Leads...
LOVATO Electric
PMV70NA600
from £ 159.92*
per piece
 
 piece
Finder Voltage Monitoring Relay, 3 Phase / 2482692 (2 offers) 
Monitoring Application = Voltage Electrical Phase = 3 Voltage Sensitivity = Phase Loss, Phase Rotation
Finder
706284000000T
from £ 100.253*
per piece
 
 piece
Dold Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail / 2913144 (1 offer) 
IL9077 - Over and under voltage relay. Detection of over voltage, under voltage and phase failure Network error diagnosis through more LEDs Response values for over and under voltage separately adj...
DOLD
IL9077.12 3/NAC 400/230V 0.1-20S
£ 235.333*
per piece
 
 piece
Module: voltage monitoring relay; for DIN rail mounting; DPDT (1 offer) 
Manufacturer: WEIDMÜLLER Mounting: for DIN rail mounting Operating temperature: -25...60°C Kind of output 1: DPDT Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals Body...
Weidmüller
ACT20P-VMR-3PH-ILP-H
from £ 103.56*
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
Dold Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail / 2408951 (1 offer) 
IL9071 — undervoltage relay, 3 phase. Single phase connection also an option Fixed fall-back value Closed circuit current principle LED display of switch state Adjustable phase sequence 2 changeove...
DOLD
IL9071.12 3/N AC400/230V 0.85UN 4%
£ 215.642*
per piece
 
 piece
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