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  Phase unbalance relay  (1,233 offers of 5,775,201 product items)

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Voltage monitoring relay; for DIN rail mounting; CP; NO; IP20 (1 offer) 
Manufacturer: F&F Mounting: for DIN rail mounting Operating temperature: -25...50°C Kind of output 1: NO Kind of output 2: NO Kind of output 3: NO Power supply: from tested wiring system IP rating:...
F&F
CP-723
from £ 85.85*
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
from £ 614.341*
per piece
 
 piece
GIC Thermistor Motor Protection Monitoring Relay, 1 Phase, DPDT, 110 → 240V ac, DIN Rail / 7943957 (2 offers) 
GIC PTC Thermistor Relay Series PD225. Professional thermistor relay containing protection againt Phase sequence fault. Monitors and protects motors with integrated PTC resistor sensors Protection ...
GIC
MJ83BK
from £ 52.698*
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 £ 39.753*
per piece
 
 piece
Voltage monitoring relay; for DIN rail mounting; CKF; DPDT; IP20 (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-320-TRMS
from £ 33.51*
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 £ 42.04*
per piece
 
 piece
Voltage monitoring relay; for DIN rail mounting; DPA; DPDT; IP20 (1 offer) 
Manufacturer: CARLO GAVAZZI Mounting: for DIN rail mounting Operating temperature: -20...60°C Kind of output 1: DPDT Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals B...
Carlo Gavazzi
DPA71DM48
from £ 97.64*
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 £ 310.28*
per piece
 
 piece
Voltage monitoring relay; for DIN rail mounting; DPA; SPDT; IP20 (2 offers) 
Manufacturer: CARLO GAVAZZI Mounting: for DIN rail mounting Operating temperature: -20...60°C Kind of output 1: SPDT Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals B...
Carlo Gavazzi
DPA55CM44
from £ 55.35*
per piece
 
 piece
GIC Voltage Monitoring Relay, 1, 3 Phase, DPDT, DIN Rail / 7943948 (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
MG73BH
from £ 43.994*
per piece
 
 piece
GIC Thermistor Motor Protection Monitoring Relay, 3 Phase, SPDT, DIN Rail / 7943963 (2 offers) 
GIC Combined Phase Failure ; Thermistor PTC Relay. Professional thermistor relay with protection againt phase sequence, phase loss and phase asymmetry faults. Monitors and protects motors with inte...
GIC
MLD4BS
from £ 51.34*
per piece
 
 piece
Voltage monitoring relay; for DIN rail mounting; CM-MPS; 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: screw terminals Body dimens...
ABB
CM-MPS.23S
from £ 110.98*
per piece
 
 piece
GIC Thermistor Motor Protection Monitoring Relay, 3 Phase, DPDT, 220 → 440V ac, DIN Rail / 7943951 (1 offer) 
GIC PTC Thermistor Relay Series PD225. Professional thermistor relay containing protection againt Phase sequence fault. Monitors and protects motors with integrated PTC resistor sensors Protection ...
GIC
MJ93BK
from £ 55.096*
per piece
 
 piece
Voltage monitoring relay; for DIN rail mounting; DPB; SPDT; IP20 (1 offer) 
Manufacturer: CARLO GAVAZZI Mounting: for DIN rail mounting Operating temperature: -20...60°C Kind of output 1: SPDT Power supply: from tested wiring system IP rating: IP20 Leads: screw terminals B...
Carlo Gavazzi
DPB01CM48NW4
from £ 133.82*
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%
from £ 213.178*
per piece
 
 piece
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