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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
2102310

RoHS

Each
1+
US$199.030
5+
US$188.431
Total:US$199.03
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
300VAC
-
3 Phase
10VA
160VAC
300VAC
UL
2102320

RoHS

Each
1+
US$221.475
5+
US$210.943
Total:US$221.48
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Screw
300VAC
170VAC
-
3 Phase
10VA
70VAC
170VAC
UL
2056351

RoHS

Each
1+
US$140.955
5+
US$132.137
10+
US$124.365
25+
US$117.464
Total:US$140.96
Min: 1 / Mult: 1
Harmony RM35UB3 Series
DPDT
5A
DIN Rail
-
Screw
250V
480VAC
-
3 Phase
2.9VA
194V
528V
-
2102322

RoHS

Each
1+
US$274.003
5+
US$261.019
Total:US$274.00
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Screw
300VAC
280VAC
-
3 Phase
4VA
180VAC
280VAC
UL
2102324

RoHS

Each
1+
US$300.495
5+
US$285.943
Total:US$300.50
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
720VAC
-
3 Phase
52VA
450VAC
720VAC
UL
2102314

RoHS

Each
1+
US$68.930
Total:US$68.93
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
300VAC
-
3 Phase
10VA
160VAC
300VAC
UL
2102317

RoHS

Each
1+
US$156.659
Total:US$156.66
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
300VAC
-
3 Phase
10VA
300VAC
500VAC
UL
3484516

RoHS

Each
1+
US$138.556
Total:US$138.56
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3487978

RoHS

Each
1+
US$293.085
Total:US$293.08
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484519

RoHS

Each
1+
US$127.005
Total:US$127.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484522

RoHS

Each
1+
US$127.005
Total:US$127.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484533

RoHS

Each
180+
US$210.541
Total:US$37,897.38
Min: 180 / Mult: 180
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484523

RoHS

Each
1+
US$154.596
Total:US$154.60
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3487983

RoHS

Each
1+
US$325.057
Total:US$325.06
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484525

RoHS

Each
1+
US$154.596
Total:US$154.60
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484515

RoHS

Each
1+
US$120.788
Total:US$120.79
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484513

RoHS

Each
1+
US$110.135
Total:US$110.14
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484524

RoHS

Each
1+
US$144.774
Total:US$144.77
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
2926873

RoHS

Each
1+
US$237.301
Total:US$237.30
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4259623
Each
1+
US$274.124
Total:US$274.12
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250V
-
-
3 Phase
30VA
280VAC
600VAC
-
4698898
Each
1+
US$183.808
Total:US$183.81
Min: 1 / Mult: 1
200 Series
SPDT
8A
DIN Rail
-
Screw
250V
208V
-
3 Phase
2VA
-
208V
-
4698900
Each
1+
US$186.515
Total:US$186.52
Min: 1 / Mult: 1
200 Series
SPDT
8A
DIN Rail
-
Screw
250V
480VAC
-
3 Phase
2VA
-
480V
-
4698901
Each
1+
US$202.729
Total:US$202.73
Min: 1 / Mult: 1
200 Series
SPDT
8A
DIN Rail
-
Screw
250V
575V
-
3 Phase
2VA
-
575V
-
4698899
Each
1+
US$163.654
Total:US$163.65
Min: 1 / Mult: 1
200 Series
SPDT
8A
DIN Rail
-
Screw
250V
240V
-
3 Phase
2VA
-
240V
-
1853780

RoHS

Each
1+
US$76.983
5+
US$73.847
10+
US$71.100
Total:US$76.98
Min: 1 / Mult: 1
-
SPDT
-
DIN Rail
-
Screw
-
400VAC
-
3 Phase
3VA
-
-
-
151-175 of 187 items
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