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Phase Monitoring Relays:

140 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
3214139

RoHS

Each
1+
€245.000
Min: 1 / Mult: 1
EMR6
DPDT
4A
DIN Rail
-
Screw
250VAC
-
500VAC
3 Phase
18VA
300VAC
500VAC
-
3922060

RoHS

Each
1+
€146.500
Min: 1 / Mult: 1
-
DPDT-CO
8A
DIN Rail
-
Screw
250VAC
-
576VAC
3 Phase
4VA
208VAC
480VAC
-
3214133

RoHS

Each
1+
€203.000
Min: 1 / Mult: 1
EMR6
DPDT
4A
DIN Rail
-
Screw
500V
-
500VAC
3 Phase
15VA
300VAC
500VAC
-
4163401

RoHS

Each
1+
€56.230
5+
€48.580
10+
€47.640
20+
€46.720
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
-
480VAC
3 Phase
3VA
208VAC
480VAC
-
4163405

RoHS

Each
1+
€64.980
5+
€56.140
10+
€55.040
20+
€53.980
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+
€87.900
5+
€75.940
10+
€74.460
20+
€73.030
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
240VAC
-
500VAC
3 Phase
5VA
145VAC
500VAC
-
4163404

RoHS

Each
1+
€64.980
5+
€56.140
10+
€55.040
20+
€53.980
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
-
240VAC
3 Phase
5VA
-
240VAC
-
4163406

RoHS

Each
1+
€64.980
5+
€56.140
10+
€55.040
20+
€53.980
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
-
415VAC
3 Phase
10VA
-
415VAC
-
4163397

RoHS

Each
1+
€94.230
5+
€81.410
10+
€79.820
20+
€78.290
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
240VAC
-
300V
3 Phase
5VA
85V
300V
-
4163408

RoHS

Each
1+
€72.420
5+
€62.570
10+
€61.340
20+
€60.170
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
-
415VAC
3 Phase
10VA
-
415VAC
-
4163399

RoHS

Each
1+
€51.000
5+
€44.060
10+
€43.200
20+
€42.360
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
-
480VAC
3 Phase
3.5VA
208VAC
480VAC
-
4377819

RoHS

Each
1+
€152.200
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
-
Screw
24VDC
-
480VAC
3 Phase
13VA
177VAC
552VAC
-
4236649

RoHS

Each
1+
€96.620
5+
€91.790
10+
€86.960
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
-
Screw
250VAC
-
480VAC
3 Phase
22VA
183V
528V
-
4300430

RoHS

Each
1+
€195.130
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
-
Plug In
250VAC
-
-
3 Phase
2.5VA
380VAC
480VAC
-
4300429

RoHS

Each
1+
€143.600
5+
€121.750
10+
€119.320
Min: 1 / Mult: 1
DPB51 Series
SPDT
5A
DIN Rail, Panel
-
Screw
250VAC
-
-
3 Phase
13VA
208VAC
480VAC
-
4259621
Each
1+
€148.440
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250VAC
-
230VAC
3 Phase
8VA
170VAC
290VAC
-
4259625
Each
1+
€199.790
Min: 1 / Mult: 1
-
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
2295791

RoHS

Each
1+
€100.520
5+
€98.510
10+
€96.500
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
-
Screw
250VAC
-
240VAC
1 Phase
2.6VA
220VAC
240VAC
-
2811545

RoHS

Each
1+
€47.070
5+
€46.130
10+
€45.190
Min: 1 / Mult: 1
SM 301 Series
SPDT
5A
DIN Rail
250V
Screw
250VAC
28V
415VAC
3 Phase
15VA
-
415VAC
CE
3050817

RoHS

Each
1+
€84.680
5+
€82.090
10+
€80.450
Min: 1 / Mult: 1
70 Series
DPDT
8A
DIN Rail, Panel
-
Screw
400VAC
-
480VAC
3 Phase
800mW
170VAC
520VAC
-
1896002

RoHS

Each
1+
€87.300
5+
€85.550
10+
€83.810
Min: 1 / Mult: 1
CM-PBE
SPST-NO
-
DIN Rail
-
Screw
-
-
440VAC
3 Phase
-
220VAC
440VAC
UL
1390500

RoHS

Each
1+
€155.000
Min: 1 / Mult: 1
3UG
SPST-NC
-
DIN Rail
-
Screw
-
-
500VAC
3 Phase
2W
320VAC
500VAC
-
2102326

RoHS

Each
1+
€125.000
Min: 1 / Mult: 1
CM-PFS.S
SPDT
-
DIN Rail
-
Screw
24VDC
-
500VAC
3 Phase
-
200VAC
500VAC
UL
2612120

RoHS

Each
1+
€68.370
Min: 1 / Mult: 1
K8DS-PH
SPDT
5A
DIN Rail
-
Screw
1.25kV
-
250VAC
3 Phase
150W
-
-
UL
3111270

RoHS

Each
1+
€116.000
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250VAC
-
480VAC
3 Phase
15VA
380VAC
480VAC
-
26-50 of 140 items
of 6 page(s)

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