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Phase Monitoring Relays:

161 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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2504231

RoHS

Each
1+
€ 86.250
5+
€ 84.530
10+
€ 82.800
Total:€ 86.25
Min: 1 / Mult: 1
K8AK Series
DPDT-NC
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
-
200VAC
480VAC
CSA, UL
3111269

RoHS

Each
1+
€ 148.500
Total:€ 148.50
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
3 Phase
10VA
200VAC
240VAC
-
2780440

RoHS

Each
1+
€ 156.050
Total:€ 156.05
Min: 1 / Mult: 1
Harmony RM22UA Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
1 Phase
1.5W
15V
500V
EN, IEC
3111267

RoHS

Each
1+
€ 146.000
5+
€ 143.080
10+
€ 140.160
Total:€ 146.00
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
576VAC
-
3 Phase
15VA
380VAC
480VAC
-
2780442

RoHS

Each
1+
€ 147.460
Total:€ 147.46
Min: 1 / Mult: 1
Harmony RM22UB Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
1 Phase
2W
80V
300V
EN, IEC
4259624
Each
1+
€ 229.050
Total:€ 229.05
Min: 1 / Mult: 1
SLU Series
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
3214139

RoHS

Each
1+
€ 245.000
Total:€ 245.00
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
-
Screw
250VAC
500VAC
-
3 Phase
18VA
300VAC
500V
-
3922060

RoHS

Each
1+
€ 152.010
Total:€ 152.01
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT-CO
8A
DIN Rail
-
Screw
250VAC
576VAC
-
3 Phase
4VA
208VAC
480VAC
-
2102318

RoHS

Each
1+
€ 254.000
Total:€ 254.00
Min: 1 / Mult: 1
CM Series
DPDT
5A
DIN Rail
-
Spring Clamp
300VAC
500VAC
-
3 Phase
18VA
300VAC
500V
UL
4236649

RoHS

Each
1+
€ 111.650
5+
€ 109.420
10+
€ 107.180
Total:€ 111.65
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
183V
528V
-
4163404

RoHS

Each
1+
€ 63.690
5+
€ 62.340
10+
€ 60.980
Total:€ 63.69
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
-
Screw
250VAC
240VAC
-
3 Phase
5VA
-
240VAC
-
4300430

RoHS

Each
1+
€ 188.570
Total:€ 188.57
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
-
Plug In
250VAC
-
-
3 Phase
2.5VA
380VAC
480VAC
-
4377819

RoHS

Each
1+
€ 147.090
Total:€ 147.09
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
-
Screw
24VDC
480VAC
-
3 Phase
13VA
177VAC
552VAC
-
4835986

RoHS

Each
1+
€ 141.490
Total:€ 141.49
Min: 1 / Mult: 1
DPA01 Series
SPDT
8A
DIN Rail
-
Screw
250VAC
600VAC
-
3 Phase
15VA
323VAC
690VAC
-
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
2W
208VAC
480VAC
-
4259621
Each
1+
€ 156.450
Total:€ 156.45
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250VAC
230VAC
-
3 Phase
8VA
170VAC
290VAC
-
4259625
Each
1+
€ 199.790
Total:€ 199.79
Min: 1 / Mult: 1
SLU Series
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
4622143
CROUZET / PARTNER STOCK
Each
2+
€ 67.730
6+
€ 64.040
Total:€ 135.46
Min: 2 / Mult: 2
WRS Series
-
-
-
-
-
-
-
-
-
-
-
-
-
4773867

RoHS

CARLO GAVAZZI / PARTNER STOCK
Each
1+
€ 261.150
3+
€ 248.310
Total:€ 261.15
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4711183

RoHS

CARLO GAVAZZI / PARTNER STOCK
Each
1+
€ 239.790
3+
€ 228.000
Total:€ 239.79
Min: 1 / Mult: 1
DWA01 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
4660268

RoHS

CARLO GAVAZZI / PARTNER STOCK
Each
1+
€ 216.530
3+
€ 205.880
Total:€ 216.53
Min: 1 / Mult: 1
DPA03 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
4657955

RoHS

CARLO GAVAZZI / PARTNER STOCK
Each
1+
€ 640.490
3+
€ 608.990
Total:€ 640.49
Min: 1 / Mult: 1
DPC02 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
4622139

RoHS

CARLO GAVAZZI / PARTNER STOCK
Each
1+
€ 190.820
3+
€ 180.410
Total:€ 190.82
Min: 1 / Mult: 1
DPB02 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
4773872

RoHS

CARLO GAVAZZI / PARTNER STOCK
Each
1+
€ 206.500
3+
€ 196.340
Total:€ 206.50
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4622142

RoHS

CARLO GAVAZZI / PARTNER STOCK
Each
1+
€ 310.750
3+
€ 295.460
Total:€ 310.75
Min: 1 / Mult: 1
DPC71 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
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