Phase Monitoring Relays:

141 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
3922060

RoHS

Each
1+
kr 1,730.000
Min: 1 / Mult: 1
-
DPDT-CO
8A
DIN Rail
-
Screw
250VAC
576VAC
-
3 Phase
4VA
208VAC
480VAC
-
3214133

RoHS

Each
1+
kr 2,334.000
Min: 1 / Mult: 1
EMR6
DPDT
4A
DIN Rail
-
Screw
500V
500VAC
-
3 Phase
15VA
300VAC
500VAC
-
4163401

RoHS

Each
1+
kr 666.590
5+
kr 575.900
10+
kr 564.760
20+
kr 553.850
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
3VA
208VAC
480VAC
-
4163405

RoHS

Each
1+
kr 747.000
5+
kr 645.370
10+
kr 632.730
20+
kr 620.540
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
240VAC
-
1 Phase, 3 Phase
5VA
-
240VAC
-
4163396

RoHS

Each
1+
kr 1,042.000
5+
kr 900.250
10+
kr 882.700
20+
kr 865.750
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
-
4163404

RoHS

Each
1+
kr 747.000
5+
kr 645.370
10+
kr 632.730
20+
kr 620.540
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
240VAC
-
3 Phase
5VA
-
240VAC
-
4163406

RoHS

Each
1+
kr 747.000
5+
kr 645.370
10+
kr 632.730
20+
kr 620.540
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4163397

RoHS

Each
1+
kr 1,117.000
5+
kr 965.090
10+
kr 946.240
20+
kr 928.100
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
240VAC
300V
-
3 Phase
5VA
85V
300V
-
4163408

RoHS

Each
1+
kr 858.520
5+
kr 741.750
10+
kr 727.170
20+
kr 713.300
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4163399

RoHS

Each
1+
kr 586.290
5+
kr 506.500
10+
kr 496.620
20+
kr 486.960
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
3.5VA
208VAC
480VAC
-
4300429

RoHS

Each
1+
kr 1,626.000
5+
kr 1,379.000
10+
kr 1,351.000
Min: 1 / Mult: 1
DPB51 Series
SPDT
5A
DIN Rail, Panel
-
Screw
250VAC
-
-
3 Phase
13VA
208VAC
480VAC
-
4377819

RoHS

Each
1+
kr 1,738.000
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
-
Screw
24VDC
480VAC
-
3 Phase
13VA
177VAC
552VAC
-
4236649

RoHS

Each
1+
kr 1,111.000
5+
kr 1,055.000
10+
kr 999.670
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
183V
528V
-
4300430

RoHS

Each
1+
kr 2,228.000
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
-
Plug In
250VAC
-
-
3 Phase
2.5VA
380VAC
480VAC
-
4259621
Each
1+
kr 1,706.000
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250VAC
230VAC
-
3 Phase
8VA
170VAC
290VAC
-
4259625
Each
1+
kr 2,297.000
Min: 1 / Mult: 1
-
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
3050817

RoHS

Each
1+
kr 1,003.000
5+
kr 971.970
10+
kr 952.540
Min: 1 / Mult: 1
70 Series
DPDT
8A
DIN Rail, Panel
-
Screw
400VAC
480VAC
-
3 Phase
800mW
170VAC
520VAC
-
3214134

RoHS

Each
1+
kr 2,851.000
Min: 1 / Mult: 1
EMR6
DPDT
4A
DIN Rail
-
Screw
250VAC
500VAC
-
3 Phase
3VA
300VAC
500VAC
-
2813563
Each
1+
kr 1,393.000
Min: 1 / Mult: 1
460 Series
SPDT
10A
DIN Rail
-
Screw
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
CE, IEC, UL
2915306

RoHS

Each
1+
kr 1,022.000
5+
kr 1,001.000
10+
kr 980.710
Min: 1 / Mult: 1
EMD
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
1.5W
187VAC
519VAC
CE, EAC, UL
2813562
Each
1+
kr 1,579.000
Min: 1 / Mult: 1
460
SPDT
10A
DIN Rail
-
Screw
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
CE, IEC, UL
2915307

RoHS

Each
1+
kr 1,022.000
5+
kr 1,001.000
10+
kr 980.710
Min: 1 / Mult: 1
EMD
SPDT
5A
DIN Rail
-
Quick Connect
250VAC
480VAC
-
3 Phase
1.5W
187VAC
519VAC
CE, EAC, UL
2295791

RoHS

Each
1+
kr 1,156.000
5+
kr 1,132.000
10+
kr 1,109.000
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
-
Screw
250VAC
240VAC
-
1 Phase
2.6VA
220VAC
240VAC
-
2811545

RoHS

Each
1+
kr 541.110
5+
kr 530.300
10+
kr 519.500
Min: 1 / Mult: 1
SM 301 Series
SPDT
5A
DIN Rail
250V
Screw
250VAC
415VAC
28V
3 Phase
15VA
-
415VAC
CE
1896002

RoHS

Each
1+
kr 1,004.000
5+
kr 983.470
10+
kr 963.460
Min: 1 / Mult: 1
CM-PBE
SPST-NO
-
DIN Rail
-
Screw
-
440VAC
-
3 Phase
-
220VAC
440VAC
UL
26-50 of 141 items
of 6 page(s)

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