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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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2504231

RoHS

Each
1+
US$88.520
5+
US$86.752
10+
US$84.983
Total:US$88.52
Min: 1 / Mult: 1
K8AK Series
DPDT-NC
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
-
200VAC
480VAC
CSA, UL
2780440

RoHS

Each
1+
US$218.862
Total:US$218.86
Min: 1 / Mult: 1
Harmony RM22UA Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240V
-
1 Phase
1.5W
15V
500V
EN, IEC
3111267

RoHS

Each
1+
US$141.558
5+
US$138.730
10+
US$135.889
Total:US$141.56
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
576VAC
-
3 Phase
15VA
380VAC
480VAC
-
3111269

RoHS

Each
1+
US$169.952
Total:US$169.95
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240V
-
3 Phase
10VA
200VAC
240VAC
-
2780442

RoHS

Each
1+
US$204.819
Total:US$204.82
Min: 1 / Mult: 1
Harmony RM22UB Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240V
-
1 Phase
2W
80V
300V
EN, IEC
4259624
Each
1+
US$258.151
Total:US$258.15
Min: 1 / Mult: 1
SLU Series
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
3214139

RoHS

Each
1+
US$288.676
Total:US$288.68
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
-
Screw
250VAC
500VAC
-
3 Phase
18VA
300VAC
500V
-
3922060

RoHS

Each
1+
US$225.013
Total:US$225.01
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT-CO
8A
DIN Rail
-
Screw
250VAC
576VAC
-
3 Phase
4VA
208VAC
480VAC
-
4236649

RoHS

Each
1+
US$164.458
5+
US$161.175
10+
US$157.879
Total:US$164.46
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
183V
528V
-
4163404

RoHS

Each
1+
US$68.327
5+
US$66.866
10+
US$65.271
Total:US$68.33
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Screw
250VAC
240V
-
3 Phase
5VA
-
240VAC
-
4377819

RoHS

Each
1+
US$171.386
Total:US$171.39
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
-
Screw
24VDC
480VAC
-
3 Phase
13VA
177VAC
552VAC
-
4300430

RoHS

Each
1+
US$219.733
Total:US$219.73
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
-
Plug In
250VAC
-
-
3 Phase
2.5VA
380VAC
480VAC
-
4259621
Each
1+
US$176.331
Total:US$176.33
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250VAC
230VAC
-
3 Phase
8VA
170VAC
290VAC
-
4259625
Each
1+
US$231.981
Total:US$231.98
Min: 1 / Mult: 1
SLU Series
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
4825129
Each
1+
US$119.260
Total:US$119.26
Min: 1 / Mult: 1
LPRC/2/WS Series
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase (3 Wire)
2.5VA
380VAC
415VAC
-
2295791

RoHS

Each
1+
US$138.958
5+
US$133.303
10+
US$130.637
Total:US$138.96
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
-
Screw
250VAC
240V
-
1 Phase
2.6VA
220VAC
240VAC
-
2811545

RoHS

Each
1+
US$44.984
5+
US$44.957
10+
US$44.917
Total:US$44.98
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
250V
Screw
250VAC
415VAC
28V
3 Phase
15VA
-
415VAC
CE
3050817

RoHS

Each
1+
US$116.969
5+
US$113.391
10+
US$108.500
Total:US$116.97
Min: 1 / Mult: 1
70 Series
DPDT
8A
DIN Rail, Panel
-
Screw
400VAC
480VAC
-
3 Phase
800mW
170VAC
520VAC
-
2835320

RoHS

Each
1+
US$186.448
Total:US$186.45
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
380VAC
480VAC
CE, CSA, EN, IEC, UL
1896002

RoHS

Each
1+
US$88.306
5+
US$83.897
10+
US$79.475
Total:US$88.31
Min: 1 / Mult: 1
CM-PBE Series
SPST-NO
-
DIN Rail
-
Screw
-
440VAC
-
3 Phase
-
220VAC
440VAC
UL
1390500

RoHS

Each
1+
US$152.760
Total:US$152.76
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
SPST-NC
-
DIN Rail
-
Screw
-
500VAC
-
3 Phase
2W
320VAC
500V
-
2102326

RoHS

Each
1+
US$120.573
Total:US$120.57
Min: 1 / Mult: 1
CM Series
SPDT
-
DIN Rail
-
Screw
24VDC
500VAC
-
3 Phase
-
200VAC
500V
UL
2612120

RoHS

Each
1+
US$80.869
Total:US$80.87
Min: 1 / Mult: 1
K8DS Series
SPDT
5A
DIN Rail
-
Screw
1.25kV
250VAC
-
3 Phase
150W
-
-
UL
3111270

RoHS

Each
1+
US$144.492
Total:US$144.49
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
380VAC
480VAC
-
3214134

RoHS

Each
1+
US$292.937
Total:US$292.94
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
-
Screw
250VAC
500VAC
-
3 Phase
3VA
300VAC
500V
-
26-50 of 187 items
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