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Phase Monitoring Relays:

146 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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3111269

RoHS

Each
1+
€148.500
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
3 Phase
10VA
200VAC
240VAC
-
3111270

RoHS

Each
1+
€116.000
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
380VAC
480VAC
-
3214134

RoHS

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

RoHS

Each
1+
€259.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
-
Screw
250VAC
280VAC
-
3 Phase
3VA
180VAC
280VAC
-
1895999

RoHS

Each
1+
€95.500
5+
€93.590
10+
€91.680
Min: 1 / Mult: 1
CM-PVE Series
SPDT
5A
DIN Rail
-
Screw
300VAC
460VAC
-
3 Phase
-
185VAC
460VAC
UL
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
250VAC
130VAC
-
1 Phase
-
110VAC
130VAC
UL
2507217

RoHS

Each
1+
€188.690
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
-
Screw
-
480VAC
-
3 Phase
-
-
-
-
2612117

RoHS

Each
1+
€167.800
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
-
Screw
1.25kV
480VAC
-
3 Phase
4.4VA
220VAC
480VAC
UL
2813563
Each
1+
€100.810
Min: 1 / Mult: 1
460 Series
SPDT
10A
DIN Rail
-
Screw
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
CE, IEC, UL
2780435

RoHS

Each
1+
€136.500
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
183VAC
528VAC
EN, IEC
2780436

RoHS

Each
1+
€140.690
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
-
Screw
250VAC
48V
-
1 Phase
3.9VA
20V
80V
EN, IEC
2780439

RoHS

Each
1+
€156.050
Min: 1 / Mult: 1
Harmony RM22UA Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
1 Phase
1.5W
1V
100V
EN, IEC
3223356

RoHS

Each
1+
€256.000
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
-
Screwless
230VAC
500VAC
-
3 Phase
-
300VAC
500VAC
-
2102323

RoHS

Each
1+
€341.100
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Screw
300VAC
580VAC
-
3 Phase
41VA
350VAC
580VAC
UL
9515020

RoHS

Each
1+
€101.540
5+
€86.090
10+
€84.370
Min: 1 / Mult: 1
-
SPST-NC
-
DIN Rail
-
Screw
-
415VAC
-
3 Phase
-
-
-
-
2780441

RoHS

Each
1+
€162.480
Min: 1 / Mult: 1
Harmony RM22UA Series
DPDT
8A
DIN Rail
-
Screw
250VAC
415VAC
-
1 Phase
8VA
15V
500VAC
EN, IEC
2780438

RoHS

Each
1+
€177.210
Min: 1 / Mult: 1
Harmony RM22UA Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
1 Phase
1.5W
50mV
5V
EN, IEC
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
-
2102318

RoHS

Each
1+
€254.000
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
500VAC
-
3 Phase
18VA
300VAC
500VAC
UL
3214137

RoHS

Each
1+
€198.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
-
Screw
250VAC
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
-
2578931

RoHS

Each
1+
€135.040
Min: 1 / Mult: 1
K8DT-PM Series
SPDT
-
DIN Rail
-
Screw
-
480VAC
-
3 Phase
2.7VA
-
-
UL
2780437

RoHS

Each
1+
€111.000
5+
€108.780
10+
€106.560
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
3 Phase
10VA
200VAC
240VAC
EN, IEC
3215092

RoHS

Each
1+
€212.000
Min: 1 / Mult: 1
Harmony RM35BA Series
SPDT
5A
DIN Rail
-
Screw
250VAC
528VAC
-
3 Phase
5VA
208VAC
480VAC
-
51-75 of 146 items
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