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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
4163403

RoHS

Each
1+
€45.400
5+
€43.580
10+
€42.720
20+
€41.910
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
4163402

RoHS

Each
1+
€42.910
5+
€41.190
10+
€40.380
20+
€39.610
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
1895998

RoHS

Each
1+
€105.000
5+
€102.900
10+
€100.800
Min: 1 / Mult: 1
CM-PFE
SPDT
4A
DIN Rail
-
Screw
250VAC
440VAC
-
3 Phase
15VA
208VAC
440VAC
UL
3111268

RoHS

Each
1+
€80.400
5+
€78.790
10+
€77.180
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
183VAC
528VAC
-
2835320

RoHS

Each
1+
€155.000
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
380V
480V
CE, CSA, EN, IEC, UL
3111267

RoHS

Each
1+
€146.000
5+
€143.080
10+
€140.160
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250VAC
576VAC
-
3 Phase
15VA
380V
480V
-
2811545

RoHS

Each
1+
€39.590
5+
€39.250
10+
€38.450
Min: 1 / Mult: 1
SM 301 Series
SPDT
5A
DIN Rail
250V
Screw
250VAC
415VAC
28V
3 Phase
15VA
-
415VAC
CE
3111270

RoHS

Each
1+
€116.000
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
380V
480V
-
3214133

RoHS

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