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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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3111268

RoHS

Each
1+
CHF 75.040
5+
CHF 73.540
10+
CHF 72.030
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
480VAC
3 Phase
15VA
183VAC
528VAC
-
2780440

RoHS

Each
1+
CHF 144.200
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
Screw
250VAC
240V
1 Phase
1.5W
15V
500V
EN, IEC
3111267

RoHS

Each
1+
CHF 136.270
5+
CHF 133.540
10+
CHF 130.820
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
576VAC
3 Phase
15VA
380VAC
480VAC
-
3111269

RoHS

Each
1+
CHF 141.010
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
240V
3 Phase
10VA
200VAC
240VAC
-
2780442

RoHS

Each
1+
CHF 138.640
Min: 1 / Mult: 1
Zelio RM22UB
DPDT
8A
DIN Rail
Screw
250VAC
240V
1 Phase
2W
80V
300V
EN, IEC
3922060

RoHS

Each
1+
CHF 142.910
Min: 1 / Mult: 1
-
DPDT-CO
8A
DIN Rail
Screw
250VAC
576VAC
3 Phase
4VA
208VAC
480VAC
-
4236649

RoHS

Each
1+
CHF 108.460
5+
CHF 106.290
10+
CHF 104.120
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
Screw
250VAC
480VAC
3 Phase
22VA
183VAC
528VAC
-
4300430

RoHS

Each
1+
CHF 178.730
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
Plug In
250VAC
-
3 Phase
2.5VA
380VAC
480VAC
-
3050817

RoHS

Each
1+
CHF 87.450
5+
CHF 85.710
10+
CHF 83.960
Min: 1 / Mult: 1
70 Series
DPDT
8A
DIN Rail, Panel
Screw
400VAC
480VAC
3 Phase
800mW
170VAC
520VAC
-
2835320

RoHS

Each
1+
CHF 147.180
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
Screw
250VAC
480VAC
3 Phase
15VA
380VAC
480VAC
CE, CSA, EN, IEC, UL
3111270

RoHS

Each
1+
CHF 108.270
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
480VAC
3 Phase
15VA
380VAC
480VAC
-
2780439

RoHS

Each
1+
CHF 146.710
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
Screw
250VAC
240V
1 Phase
1.5W
1V
100V
EN, IEC
2780441

RoHS

Each
1+
CHF 150.730
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
Screw
250VAC
415VAC
1 Phase
8VA
15V
500V
EN, IEC
2780438

RoHS

Each
1+
CHF 165.400
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
Screw
250VAC
240V
1 Phase
1.5W
50mV
5V
EN, IEC
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
240V
3 Phase
10VA
200VAC
240VAC
EN, IEC
3111266

RoHS

Each
1+
CHF 142.330
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
Screw
250VAC
288VAC
3 Phase
10VA
200VAC
240VAC
-
4698899
Each
1+
CHF 138.140
5+
CHF 117.120
10+
CHF 114.780
Min: 1 / Mult: 1
200 Series
SPDT
8A
DIN Rail
Screw
250VAC
240V
3 Phase
2W
-
240VAC
-
4698901
Each
1+
CHF 161.560
Min: 1 / Mult: 1
200 Series
SPDT
8A
DIN Rail
Screw
250VAC
575V
3 Phase
2W
-
575V
-
4698900
Each
1+
CHF 148.640
Min: 1 / Mult: 1
200 Series
SPDT
8A
DIN Rail
Screw
250VAC
480VAC
3 Phase
2W
-
480VAC
-
4698898
Each
1+
CHF 146.490
Min: 1 / Mult: 1
200 Series
SPDT
8A
DIN Rail
Screw
250VAC
208V
3 Phase
2W
-
208V
-
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