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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
4259624
Each
1+
CHF 208.950
Min: 1 / Mult: 1
-
SPDT
10A
Socket
Plug In
240VAC
-
3 Phase
90VA
200VAC
430VAC
-
2504231

RoHS

Each
1+
CHF 75.730
5+
CHF 74.390
10+
CHF 73.080
Min: 1 / Mult: 1
K8AK
DPDT-NC
5A
DIN Rail
Screw
250VAC
480VAC
3 Phase
-
200VAC
480VAC
CSA, UL
3111269

RoHS

Each
1+
CHF 141.010
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
240VAC
3 Phase
10VA
200VAC
240VAC
-
4259625
Each
1+
CHF 186.360
Min: 1 / Mult: 1
-
SPDT
10A
Socket
Plug In
240VAC
-
3 Phase
90VA
200VAC
430VAC
-
3223349

RoHS

Each
1+
CHF 123.450
Min: 1 / Mult: 1
CM
DPDT
4A
DIN Rail
Screwless
230VAC
500VAC
3 Phase
-
200VAC
500VAC
-
2780437

RoHS

Each
1+
CHF 103.600
5+
CHF 101.530
10+
CHF 99.460
Min: 1 / Mult: 1
Zelio RM22TU
DPDT
8A
DIN Rail
Screw
250VAC
240VAC
3 Phase
10VA
200VAC
240VAC
EN, IEC
2578929

RoHS

Each
1+
CHF 71.720
5+
CHF 70.290
10+
CHF 68.860
Min: 1 / Mult: 1
K8DT-PH
SPDT
-
DIN Rail
Screw
-
480VAC
3 Phase
2.6VA
200VAC
480VAC
UL
3111266

RoHS

Each
1+
CHF 142.330
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
288VAC
3 Phase
10VA
200VAC
240VAC
-
2987237

RoHS

OMRON INDUSTRIAL AUTOMATION
Each
1+
CHF 67.500
5+
CHF 65.820
10+
CHF 64.120
25+
CHF 60.750
50+
CHF 57.380
Min: 1 / Mult: 1
K8AK-PH Series
DPDT-NC
5A
DIN Rail
Screw
250VAC
480VAC
3 Phase
4.1VA
200VAC
480VAC
-
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