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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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3111268

RoHS

Each
1+
€ 80.400
5+
€ 78.790
10+
€ 77.180
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
183VAC
528VAC
-
9515046

RoHS

Each
1+
€ 103.270
5+
€ 87.560
10+
€ 85.810
Min: 1 / Mult: 1
-
SPST-NC
-
DIN Rail
-
Screw
230VAC
400VAC
-
3 Phase
-
-
-
-
9514430

RoHS

Each
1+
€ 746.150
Min: 1 / Mult: 1
BD 9080 Series
DPDT
-
DIN Rail
-
Screw
230VAC
400VAC
-
3 Phase
2.4VA
-
-
-
2504231

RoHS

Each
1+
€ 82.620
5+
€ 81.140
10+
€ 79.720
Min: 1 / Mult: 1
K8AK Series
DPDT-NC
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
-
200VAC
480VAC
CSA, UL
2780440

RoHS

Each
1+
€ 156.050
Min: 1 / Mult: 1
Harmony RM22UA Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240V
-
1 Phase
1.5W
15V
500V
EN, IEC
3111269

RoHS

Each
1+
€ 148.500
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240V
-
3 Phase
10VA
200VAC
240VAC
-
3111267

RoHS

Each
1+
€ 146.000
5+
€ 143.080
10+
€ 140.160
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
Min: 1 / Mult: 1
Harmony RM22UB Series
DPDT
8A
DIN Rail
-
Screw
250VAC
240V
-
1 Phase
2W
80V
300V
EN, IEC
3214139

RoHS

Each
1+
€ 245.000
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
-
Screw
250VAC
500VAC
-
3 Phase
18VA
300VAC
500V
-
4236649

RoHS

Each
1+
€ 105.480
5+
€ 103.370
10+
€ 101.260
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
183VAC
528VAC
-
4300430

RoHS

Each
1+
€ 195.130
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
-
Plug In
250VAC
-
-
3 Phase
2.5VA
380VAC
480VAC
-
4377819

RoHS

Each
1+
€ 152.200
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
-
Screw
24VDC
480VAC
-
3 Phase
13VA
177VAC
552VAC
-
4300429

RoHS

Each
1+
€ 144.380
5+
€ 122.410
10+
€ 119.960
Min: 1 / Mult: 1
DPB51 Series
SPDT
5A
DIN Rail, Panel
-
Screw
250VAC
-
-
3 Phase
13VA
208VAC
480VAC
-
4259621
Each
1+
€ 148.440
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250VAC
230VAC
-
3 Phase
8VA
170VAC
290VAC
-
4259625
Each
1+
€ 199.790
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
Min: 2 / Mult: 2
WRS Series
-
-
-
-
-
-
-
-
-
-
-
-
-
4773869
CROUZET / PARTNER STOCK
Each
1+
€ 121.550
3+
€ 114.920
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4773870

RoHS

CROUZET / PARTNER STOCK
Each
1+
€ 121.550
3+
€ 114.920
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2295791

RoHS

Each
1+
€ 100.520
5+
€ 98.510
10+
€ 96.500
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
-
Screw
250VAC
240V
-
1 Phase
2.6VA
220VAC
240VAC
-
3050817

RoHS

Each
1+
€ 88.090
5+
€ 85.400
10+
€ 82.640
Min: 1 / Mult: 1
70 Series
DPDT
8A
DIN Rail, Panel
-
Screw
400VAC
480VAC
-
3 Phase
800mW
170VAC
520VAC
-
2811545

RoHS

Each
1+
€ 39.590
5+
€ 39.250
10+
€ 38.450
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
250V
Screw
250VAC
415VAC
28V
3 Phase
15VA
-
415VAC
CE
1390500

RoHS

Each
1+
€ 155.000
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
SPST-NC
-
DIN Rail
-
Screw
-
500VAC
-
3 Phase
2W
320VAC
500V
-
1896002

RoHS

Each
1+
€ 87.300
5+
€ 85.550
10+
€ 83.810
Min: 1 / Mult: 1
CM-PBE Series
SPST-NO
-
DIN Rail
-
Screw
-
440VAC
-
3 Phase
-
220VAC
440VAC
UL
2612120

RoHS

Each
1+
€ 73.050
Min: 1 / Mult: 1
K8DS Series
SPDT
5A
DIN Rail
-
Screw
1.25kV
250VAC
-
3 Phase
150W
-
-
UL
2102326

RoHS

Each
1+
€ 125.000
Min: 1 / Mult: 1
CM Series
SPDT
-
DIN Rail
-
Screw
24VDC
500VAC
-
3 Phase
-
200VAC
500V
UL
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