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Phase Monitoring Relays:

164 Products Found

Farnell offers phase monitoring relays that protect three-phase systems from phase loss, phase reversal and imbalance. These relays are designed to prevent motor damage and ensure stable operation.

Phase monitoring relays measure phase sequence, phase loss and voltage balance in three-phase systems. If any discrepancy is detected, the relay disconnects the load to prevent motor failure.

Key Features:

  • Phase loss and reversal protection for motors and equipment.
  • Adjustable voltage range for versatile use.
  • Compact design for easy installation in control panels.

Applications:

  • Industrial Motors – Ensure proper phase alignment and prevent damage.
  • HVAC Systems – Maintain stable operation in multi-phase compressors.
  • Renewable Energy – Monitor phase balance in solar and wind systems.
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ComparePrice ForQuantity
2102315

RoHS

Each
1+
kr 1,275.050
5+
kr 1,203.800
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
500VAC
-
3 Phase
18VA
300VAC
500VAC
UL
3484534

RoHS

Each
1+
kr 1,773.810
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3484530

RoHS

Each
1+
kr 1,542.770
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
9419250
Each
1+
kr 675.400
5+
kr 618.310
10+
kr 570.790
Min: 1 / Mult: 1
-
SPDT
8A
DIN Rail
-
Screw
-
500VAC
-
3 Phase
4W
180VAC
500VAC
-
2102319

RoHS

Each
1+
kr 1,473.950
5+
kr 1,405.300
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Screw
300VAC
500VAC
-
3 Phase
4W
300VAC
500VAC
UL
1853780

RoHS

Each
1+
kr 517.080
5+
kr 496.010
10+
kr 477.630
Min: 1 / Mult: 1
-
SPDT
-
DIN Rail
-
Screw
-
400VAC
-
3 Phase
3VA
-
-
-
1896000

RoHS

Each
1+
kr 662.550
5+
kr 612.350
10+
kr 571.200
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
300VAC
460VAC
-
3 Phase
-
320VAC
460VAC
UL
2102311

RoHS

Each
1+
kr 1,088.350
5+
kr 1,045.050
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
500VAC
-
3 Phase
18VA
300VAC
500VAC
UL
2076503

RoHS

Each
1+
kr 374.050
5+
kr 358.900
10+
kr 344.900
Min: 1 / Mult: 1
-
SPDT
8A
DIN Rail
-
Screw
-
520VAC
-
3 Phase
8VA
77VAC
520VAC
-
2102325

RoHS

Each
1+
kr 1,675.000
5+
kr 1,597.000
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
820VAC
-
3 Phase
59VA
530VAC
820VAC
UL
2102312

RoHS

Each
1+
kr 840.350
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Screw
300VAC
380VAC
-
3 Phase
18VA
-
380VAC
UL
2056341

RoHS

Each
1+
kr 539.240
5+
kr 505.580
10+
kr 475.830
25+
kr 449.420
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250V
480VAC
-
3 Phase
22VA
183VAC
528VAC
-
3484517

RoHS

Each
1+
kr 1,155.210
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3484521

RoHS

Each
1+
kr 1,065.780
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3484536

RoHS

Each
1+
kr 2,243.350
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2102320

RoHS

Each
1+
kr 1,487.800
5+
kr 1,445.400
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Screw
300VAC
170VAC
-
3 Phase
10VA
70VAC
170VAC
UL
2102310

RoHS

Each
1+
kr 1,336.750
5+
kr 1,291.000
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
300VAC
-
3 Phase
10VA
160VAC
300VAC
UL
2102322

RoHS

Each
1+
kr 1,769.600
5+
kr 1,719.600
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Screw
300VAC
280VAC
-
3 Phase
4W
180VAC
280VAC
UL
2056351

RoHS

Each
1+
kr 975.120
5+
kr 914.150
10+
kr 860.350
25+
kr 812.650
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Screw
250V
480VAC
-
3 Phase
2.9VA
194V
528VAC
-
2102324

RoHS

Each
1+
kr 1,921.350
5+
kr 1,865.000
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
720VAC
-
3 Phase
52VA
450VAC
720VAC
UL
2102314

RoHS

Each
1+
kr 472.250
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
300VAC
-
3 Phase
10VA
160VAC
300VAC
UL
2102317

RoHS

Each
1+
kr 1,073.250
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
300VAC
-
3 Phase
10VA
300VAC
500VAC
UL
3484519

RoHS

Each
1+
kr 1,065.780
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3484522

RoHS

Each
1+
kr 1,065.780
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3484533

RoHS

Each
180+
kr 1,676.390
Min: 180 / Mult: 180
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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