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Phase Monitoring Relays:

187 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
3484532

RoHS

Each
1+
US$198.950
Total:US$198.95
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484526

RoHS

Each
1+
US$133.223
Total:US$133.22
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
SPDT
60A
DIN Rail, Panel
-
Screw
690VAC
690V
-
3 Phase
5.8W
-
-
-
2102313

RoHS

Each
1+
US$148.204
5+
US$137.564
Total:US$148.20
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Screw
300VAC
400VAC
-
3 Phase
18VA
-
400VAC
UL
2064123

RoHS

Each
1+
US$42.384
2+
US$40.267
5+
US$33.942
Total:US$42.38
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
3VA
208VAC
480VAC
-
3484514

RoHS

Each
1+
US$120.788
Total:US$120.79
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3487979

RoHS

Each
1+
US$294.867
Total:US$294.87
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3487980

RoHS

Each
1+
US$306.418
Total:US$306.42
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
1896001

RoHS

Each
1+
US$57.660
5+
US$55.891
10+
US$54.994
Total:US$57.66
Min: 1 / Mult: 1
CM-PBE Series
SPST-NO
-
DIN Rail
-
Screw
-
440VAC
-
3 Phase
-
220VAC
440VAC
UL
3484529

RoHS

Each
1+
US$162.529
Total:US$162.53
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
2102321

RoHS

Each
1+
US$186.984
5+
US$177.014
Total:US$186.98
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Screw
300VAC
280VAC
-
3 Phase
18VA
180VAC
280VAC
UL
2102315

RoHS

Each
1+
US$191.432
5+
US$179.466
Total:US$191.43
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
500VAC
-
3 Phase
18VA
300VAC
500VAC
UL
3484530

RoHS

Each
1+
US$184.732
Total:US$184.73
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484534

RoHS

Each
1+
US$212.269
Total:US$212.27
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
9419250
Each
1+
US$73.070
5+
US$66.906
10+
US$61.774
Total:US$73.07
Min: 1 / Mult: 1
-
SPDT
8A
DIN Rail
-
Screw
-
500VAC
-
3 Phase
4W
180VAC
500VAC
-
9419225

RoHS

Each
1+
US$48.079
5+
US$42.733
10+
US$38.458
20+
US$37.694
Total:US$48.08
Min: 1 / Mult: 1
-
-
-
DIN Rail
-
Screw
-
500VAC
-
3 Phase
4W
180VAC
500VAC
-
2102319

RoHS

Each
1+
US$212.779
5+
US$201.442
Total:US$212.78
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Screw
300VAC
500VAC
-
3 Phase
4W
300VAC
500VAC
UL
1896000

RoHS

Each
1+
US$55.610
5+
US$52.742
10+
US$50.665
Total:US$55.61
Min: 1 / Mult: 1
CM-PVE Series
SPDT
5A
DIN Rail
-
Screw
300VAC
460VAC
-
3 Phase
-
320VAC
460VAC
UL
2102311

RoHS

Each
1+
US$157.624
5+
US$150.000
Total:US$157.62
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
500VAC
-
3 Phase
18VA
300VAC
500VAC
UL
2076503

RoHS

Each
1+
US$65.245
5+
US$60.769
10+
US$57.821
Total:US$65.25
Min: 1 / Mult: 1
-
SPDT
8A
DIN Rail
-
Screw
-
520VAC
-
3 Phase
8VA
77VAC
520VAC
-
2056341

RoHS

Each
1+
US$77.948
5+
US$73.084
10+
US$68.782
25+
US$64.963
Total:US$77.95
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
183VAC
528VAC
-
2102325

RoHS

Each
1+
US$241.803
5+
US$228.939
Total:US$241.80
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
820VAC
-
3 Phase
59VA
530VAC
820VAC
UL
2102312

RoHS

Each
1+
US$122.664
Total:US$122.66
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Screw
300VAC
380VAC
-
3 Phase
18VA
-
380VAC
UL
3484517

RoHS

Each
1+
US$138.556
Total:US$138.56
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484521

RoHS

Each
1+
US$127.005
Total:US$127.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484536

RoHS

Each
1+
US$269.997
Total:US$270.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
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