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  Phase unbalance relay  (1,251 offers of 5,842,425 product items)

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Voltage monitoring relay; 115/230VAC; socket; SPDT; 250VAC/8A (1 offer) 
Manufacturer: CARLO GAVAZZI Mounting: socket Operating temperature: -20...60°C Kind of output 1: SPDT Power supply: external IP rating: IP20 Supply voltage: 115/230V AC Leads: screw terminals Type ...
Carlo Gavazzi
PUB01CB2310V
from £ 90.96*
per piece
 
 piece
Carlo Gavazzi Voltage Monitoring Relay, 3 Phase, SPDT, Plug In / 2098601 (2 offers) 
The Carlo Gavazzi voltage monitoring relay can operate on both 3Ph and 3Ph+N mains detecting, besides the phase loss and the correct phase sequence, possible overvoltages and undervoltages. The pow...
Carlo Gavazzi
PPB01CM44
from £ 133.52*
per piece
 
 piece
Voltage monitoring relay; 12÷240VAC; 12÷240VDC; socket; SPDT (1 offer) 
Manufacturer: CARLO GAVAZZI Mounting: socket Operating temperature: -20...60°C Kind of output 1: SPDT Power supply: external IP rating: IP20 Supply voltage: 12...240V DC;12...240V AC Leads: screw t...
Carlo Gavazzi
PUB03CW24
from £ 110.79*
per piece
 
 piece
Dold Current Monitoring Relay, 1 Phase, DPDT, DIN Rail / 3586973 (1 offer) 
IEC 255, VDE 0435 Part 303. Over- and undercurrent relay, single phase, IL9277. Single phase over- and undercurrent monitoring in 3 phase and alternating current networks 4 measurement ranges from ...
DOLD
IL9277.12 AC220-240V 0.1-15A Tv=0.1-20S
from £ 230.645*
per piece
 
 piece
Voltage monitoring relay; 24VAC,115/230VAC; socket; SPDT; IP20 (2 offers) 
Manufacturer: CARLO GAVAZZI Mounting: socket Operating temperature: -20...60°C Kind of output 1: SPDT Power supply: external IP rating: IP20 Supply voltage: 24V AC;115/230V AC Leads: screw terminal...
Carlo Gavazzi
PUB02CT23
from £ 91.70*
per piece
 
 piece
Dold Current Monitoring Relay, 1 Phase, SPDT, DIN Rail / 3586901 (1 offer) 
Undercurrent relay, single phase, IK9271. Application: 1-phase undercurrent monitoring in three-phase and alternating current networks 4 measurement ranges from 0.1 → 15 A without an additional cur...
DOLD
IK9271.11 AC220-240V 0.1-15A Tv=0.1-20S
from £ 169.295*
per piece
 
 piece
Voltage monitoring relay; 24VAC; 24VDC; for DIN rail mounting (3 offers) 
Manufacturer: OMRON Mounting: for DIN rail mounting Operating temperature: -25...60°C Kind of output 1: SPDT Power supply: external IP rating: IP20 Supply voltage: 24V DC;24V AC Leads: screw termin...
Omron
K8DT-VW2CD
from £ 95.95*
per piece
 
 piece
Dold Insulation Monitoring Relay, 1, 3 Phase, DPDT, 0 → 500V ac, DIN Rail / 1812772 (1 offer) 
For single and 3-phase AC-systems up to 0 .. 500 V and 10 .. 1000 Hz Monitors also disconnected voltage systems Adjustable tripping value RALof 5 .. 100 kΩ De-energized on trip Auxiliary voltage, m...
DOLD
MK5880N.12 AC50-400Hz 220-240V 5-100kOhm
from £ 201.049*
per piece
 
 piece
Voltage monitoring relay; 18÷265VAC; 22÷350VDC; IP20 (1 offer) 
Manufacturer: APAR Mounting: for DIN rail mounting Operating temperature: 0...50°C IP rating: IP20 Supply voltage: 18...265V AC;22...350V DC Leads: screw terminals Type of module: voltage monitorin...
APAR
AR570
from £ 160.59*
per piece
 
 piece
Dold Current Monitoring Relay, 1 Phase, SPDT, DIN Rail / 3587639 (1 offer) 
IK9270 one-phase overcurrent relay. Use: overcurrent monitoring in DC and AC current networks Four measurement ranges that can be set via a rotary switch Adjustable response value, fixed hysteresis...
DOLD
IK 9270.11 AC 220-240V 0.1-15A Tv = 0.1-20S
from £ 169.295*
per piece
 
 piece
Voltage monitoring relay; 18÷265VAC; 22÷350VDC; IP20 (1 offer) 
Manufacturer: APAR Mounting: for DIN rail mounting Operating temperature: 0...50°C IP rating: IP20 Supply voltage: 18...265V AC;22...350V DC Leads: screw terminals Type of module: voltage monitorin...
APAR
AR570/RJ45
from £ 187.41*
per piece
 
 piece
Dold Insulation Monitoring Relay, 1, 3 Phase, SPDT, 0 → 500V ac, DIN Rail / 1812774 (1 offer) 
Features • According to IEC/EN 61 557-8 • For single and 3-phase AC-systems up to 0 .. 500 V and 10 .. 1000 Hz • Monitors also disconnected voltage systems • Adjustable tripping value RALof 5 .. 10...
DOLD
MK5880N.38/200
from £ 222.306*
per piece
 
 piece
Dold Insulation Monitoring Relay, 1, 3 Phase, SPDT, 0 → 500V ac, DIN Rail / 1812776 (1 offer) 
For single and 3-phase AC-systems up to 0 .. 500 V and 10 .. 1000 Hz Monitors also disconnected voltage systems Adjustable tripping value RALof 5 .. 100 kΩ De-energized on trip Auxiliary voltage, m...
DOLD
MK5880N.38/200 DC24V 5-100kOhm VW10k-5MOhm
from £ 224.576*
per piece
 
 piece
Voltage monitoring relay; 24÷240VAC; 24÷240VDC; Zelio Control (1 offer) 
Manufacturer: SCHNEIDER ELECTRIC Mounting: for DIN rail mounting Operating temperature: -20...60°C Kind of output 1: relay NO / NC x2 IP rating: IP40 Supply voltage: 24...240V AC;24...240V DC Leads...
Schneider Electric
RM22UA21MR
from £ 87.04*
per piece
 
 piece
Dold Multifunction Monitoring Relay, 3 Phase, SPDT, 24 → 400V ac, DIN Rail / 1812796 (1 offer) 
Multifunction measuring relay Voltage monitoring (1- and 3-phase) Current monitoring Frequency monitoring Power factor cos phi Phase sequence, phase failure, asymmetry Effective-, reactive- and app...
DOLD
MK9300N.11/022 3AC24...400V AC12A UH=DC24V
from £ 255.552*
per piece
 
 piece
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