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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
1895998

RoHS

Each
1+
€105.000
5+
€102.900
10+
€100.800
Min: 1 / Mult: 1
CM-PFE Series
SPDT
4A
DIN Rail
Screw
250V
440VAC
3 Phase
15VA
208VAC
440VAC
UL
3214139

RoHS

Each
1+
€245.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
Screw
250V
500VAC
3 Phase
18VA
300VAC
500VAC
-
3214134

RoHS

Each
1+
€248.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
Screw
250V
500VAC
3 Phase
3VA
300VAC
500VAC
-
3214136

RoHS

Each
1+
€259.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
Screw
250V
280VAC
3 Phase
3VA
180VAC
280VAC
-
1895997

RoHS

Each
1+
€62.550
5+
€61.300
10+
€60.050
Min: 1 / Mult: 1
CM-MSE Series
SPST-NO
4A
DIN Rail
Screw
250V
130VAC
1 Phase
-
110VAC
130VAC
UL
3223356

RoHS

Each
1+
€256.000
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
Screwless
230VAC
500VAC
3 Phase
-
300VAC
500VAC
-
3223352

RoHS

Each
1+
€235.730
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
Screwless
230VAC
400VAC
3 Phase
-
360VAC
440VAC
-
3223357

RoHS

Each
1+
€289.720
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
Screwless
230VAC
280VAC
3 Phase
-
180VAC
280VAC
-
3214137

RoHS

Each
1+
€198.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
Screw
250V
400VAC
3 Phase
18VA
360VAC
440VAC
-
3223349

RoHS

Each
1+
€130.000
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
Screwless
230VAC
500VAC
3 Phase
-
200VAC
500VAC
-
3223355

RoHS

Each
1+
€270.000
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
Screwless
230VAC
170VAC
3 Phase
-
90VAC
170VAC
-
3214135

RoHS

Each
1+
€323.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
Screw
250V
580VAC
3 Phase
41VA
350VAC
580VAC
-
3214133

RoHS

Each
1+
€203.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
Screw
500V
500VAC
3 Phase
15VA
300VAC
500VAC
-
3223353

RoHS

Each
1+
€260.000
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
Screwless
230VAC
500VAC
3 Phase
-
300VAC
500VAC
-
3223348

RoHS

Each
1+
€257.680
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
Screwless
230VAC
500VAC
3 Phase
-
300VAC
500VAC
-
4247877

RoHS

Each
1+
€335.700
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
Push In
250V
820VAC
3 Phase
59VA
530VAC
820VAC
-
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