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Phase Monitoring Relays:

163 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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4713133

RoHS

Each
1+
€ 323.480
Total:€ 323.48
Min: 1 / Mult: 1
DPC02 Series
2 x SPDT
5A
DIN Rail
-
Screw
24VDC
690VAC
-
3 Phase
7VA
177V
793V
-
4825129
Each
1+
€ 104.130
Total:€ 104.13
Min: 1 / Mult: 1
LPRC/2/WS Series
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase (3 Wire)
2.5VA
380VAC
415VAC
-
4835985

RoHS

Each
1+
€ 137.730
5+
€ 116.770
10+
€ 114.430
Total:€ 137.73
Min: 1 / Mult: 1
DPA52 Series
SPDT
5A
DIN Rail
-
-
250VAC
480VAC
-
3 Phase
2VA
208VAC
480VAC
-
4312768

RoHS

Each
1+
€ 288.280
Total:€ 288.28
Min: 1 / Mult: 1
DPC01 Series
2 x SPDT
5A
DIN Rail
-
Screw
24VDC
690VAC
-
3 Phase
-
177V
793V
-
4826665

RoHS

Each
1+
€ 571.470
Total:€ 571.47
Min: 1 / Mult: 1
Harmony Series
DPDT
5A
DIN Rail
-
Screw
250VAC
690VAC
-
3 Phase
22VA
480VAC
690VAC
-
3487981

RoHS

Each
1+
€ 347.000
Total:€ 347.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484528

RoHS

Each
1+
€ 156.000
Total:€ 156.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484532

RoHS

Each
1+
€ 223.000
Total:€ 223.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484526

RoHS

Each
1+
€ 150.000
Total:€ 150.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
SPDT
60A
DIN Rail, Panel
-
Screw
690VAC
690VAC
-
3 Phase
5.8W
-
-
-
3484514

RoHS

Each
1+
€ 135.000
Total:€ 135.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3487979

RoHS

Each
1+
€ 331.000
Total:€ 331.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3487980

RoHS

Each
1+
€ 343.000
Total:€ 343.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484529

RoHS

Each
1+
€ 183.000
Total:€ 183.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484530

RoHS

Each
1+
€ 207.000
Total:€ 207.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484534

RoHS

Each
1+
€ 238.000
Total:€ 238.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
2076503

RoHS

Each
1+
€ 44.410
5+
€ 43.530
10+
€ 42.650
30+
€ 41.800
100+
€ 40.970
Total:€ 44.41
Min: 1 / Mult: 1
-
SPDT
8A
DIN Rail
-
Screw
-
520VAC
-
3 Phase
8VA
77VAC
520VAC
-
3484517

RoHS

Each
1+
€ 155.000
Total:€ 155.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484521

RoHS

Each
1+
€ 143.000
Total:€ 143.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484536

RoHS

Each
1+
€ 301.000
Total:€ 301.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
2102317

RoHS

Each
1+
€ 143.800
Total:€ 143.80
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
300VAC
-
3 Phase
10VA
300VAC
500VAC
UL
3487978

RoHS

Each
1+
€ 329.000
Total:€ 329.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484516

RoHS

Each
1+
€ 155.000
Total:€ 155.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484519

RoHS

Each
1+
€ 143.000
Total:€ 143.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484522

RoHS

Each
1+
€ 143.000
Total:€ 143.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
3484523

RoHS

Each
1+
€ 163.000
Total:€ 163.00
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
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