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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
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
-
4163404

RoHS

Each
1+
€54.310
5+
€52.130
10+
€51.110
20+
€50.120
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
Screw
250VAC
240VAC
3 Phase
5VA
-
240VAC
-
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
-
3111269

RoHS

Each
1+
€148.500
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
240VAC
3 Phase
10VA
200VAC
240VAC
-
2780437

RoHS

Each
1+
€111.000
5+
€108.780
10+
€106.560
Min: 1 / Mult: 1
Zelio RM22TU
DPDT
8A
DIN Rail
Screw
250VAC
240VAC
3 Phase
10VA
200VAC
240VAC
EN, IEC
3111266

RoHS

Each
1+
€152.500
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
288VAC
3 Phase
10VA
200VAC
240VAC
-
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