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  Phase unbalance relay  (1,157 offers of 5,363,692 product items)

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Dold Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail / 2408945 (1 offer) 
Voltage relay, three-phase, BA9043, BA9043/001. Voltage monitoring for 3 phase systems 3 phase mains, 50 → 400 Hz Arithmetic average measurement Adjustable response and fall-back values For mains w...
DOLD
BA9043/001 3AC50-400Hz 400V
£ 223.354*
per piece
 
 piece
Dold Thermistor Motor Protection Monitoring Relay, SPDT, DIN Rail / 2408973 (1 offer) 
MK9052 - Thermistor motor protection relay. 1 input for thermistors or bi-metallic contacts Wire breakage detection in the sensor circuit LED for switching status Rest current principle 1 changeove...
DOLD
MK9052.11 DC24V
£ 111.90*
per piece
 
 piece
Dold Residual Current Monitoring Relay, 2 Phase, DPDT, DIN Rail / 1812769 (1 offer) 
For AC and DC systems Type B To detect earth faults in grounded voltage systems 4 setting ranges from 10 mA to 3 A Manual reset, with alarm and pre-warning With adjustable switching delay Energized...
DOLD
RN5883.12/61 AC/DC80-230V 10-3000mA 0-10s
£ 500.317*
per piece
 
 piece
Module: voltage monitoring relay; for DIN rail mounting; DPDT (1 offer) 
Manufacturer: F&F Mounting: for DIN rail mounting Operating temperature: -25...40°C Kind of output 1: DPDT Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals Type of mod...
F&F
CKF-318-TRMS
from £ 41.46*
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
Dold Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail / 1812795 (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
RK9871.71 3/N AC400/230V 50/60Hz
£ 101.03*
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 £ 78.63*
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
Module: voltage monitoring relay; for DIN rail mounting; DPDT (1 offer) 
Manufacturer: POLLIN Mounting: for DIN rail mounting Operating temperature: -20...40°C Kind of output 1: DPDT Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals Max. ope...
POLLIN
SZR-2
from £ 107.39*
per piece
 
 piece
Dold Soft Starter, Soft Start, 4 kW, 480 V ac, 3 Phase, IP20 (Terminal), IP40 (Housing) / 1812798 (1 offer) 
Reversing with relays without current, soft start, soft stop with thyristor Galvanic separated 24V-inputs for clockwise and anticlockwise Reset button on front Connection facility for external rese...
DOLD
UG9256.11/61 3AC200-480V 50/60Hz 9,0A UH=DC24V
£ 265.172*
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: 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 £ 160.04*
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
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 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
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