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Phase Monitoring Relays:

139 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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1344233

RoHS

Each
1+
CHF 65.560
5+
CHF 64.250
10+
CHF 62.940
Min: 1 / Mult: 1
70 Series
SPDT
6A
DIN Rail
-
Screw
250V
480V
-
3 Phase
1W
208VAC
480VAC
-
2295793

RoHS

Each
1+
CHF 115.000
5+
CHF 112.700
10+
CHF 110.400
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
-
Screw
250V
415VAC
-
3 Phase
11VA
380VAC
415VAC
-
2056305

RoHS

Each
1+
CHF 188.970
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
-
Screw
250V
480V
-
3 Phase
22VA
194VAC
528VAC
-
2056304

RoHS

Each
1+
CHF 87.840
5+
CHF 86.080
10+
CHF 84.320
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
-
Screw
250V
440VAC
-
3 Phase
22VA
183V
484V
-
1895998

RoHS

Each
1+
CHF 99.710
5+
CHF 97.710
10+
CHF 95.720
Min: 1 / Mult: 1
CM-PFE
SPDT
4A
DIN Rail
-
Screw
250V
440VAC
-
3 Phase
15VA
208VAC
440VAC
UL
9515399

RoHS

Each
1+
CHF 140.780
5+
CHF 119.360
10+
CHF 116.970
Min: 1 / Mult: 1
MK 9056
DPDT
-
DIN Rail
-
Screw
230VAC
500VAC
-
3 Phase
-
-
-
-
2507225

RoHS

Each
1+
CHF 69.400
5+
CHF 68.010
10+
CHF 66.620
Min: 1 / Mult: 1
K8DS
SPDT
5A
DIN Rail
-
Screw
-
480V
-
3 Phase
-
-
-
-
2455513

RoHS

Each
1+
CHF 85.180
5+
CHF 83.480
10+
CHF 81.770
Min: 1 / Mult: 1
Zelio
SPDT
5A
DIN Rail
-
Screw
250V
480V
-
3 Phase
22VA
-
-
-
2507215

RoHS

Each
1+
CHF 159.410
Min: 1 / Mult: 1
K8AK
SPDT
5A
DIN Rail
-
Screw
-
480V
-
3 Phase
-
-
-
-
2780443

RoHS

Each
1+
CHF 183.270
Min: 1 / Mult: 1
Zelio RM35UB3
DPDT
5A
DIN Rail
-
Screw
250V
277VAC
-
3 Phase
3.9VA
114VAC
329VAC
EN, IEC
2835320

RoHS

Each
1+
CHF 147.180
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
-
Screw
250V
480V
-
3 Phase
15VA
380VAC
480VAC
CE, CSA, EN, IEC, UL
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
250V
480V
-
3 Phase
15VA
183V
528VAC
-
4259625
Each
1+
CHF 186.360
Min: 1 / Mult: 1
-
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
4259621
Each
1+
CHF 138.460
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
-
Screw
250V
230VAC
-
3 Phase
8VA
170VAC
290VAC
-
9514430

RoHS

Each
1+
CHF 701.510
Min: 1 / Mult: 1
BD 9080
DPDT
-
DIN Rail
-
Screw
230VAC
400VAC
-
3 Phase
2.4VA
-
-
-
2102326

RoHS

Each
1+
CHF 118.700
Min: 1 / Mult: 1
CM-PFS.S
SPDT
-
DIN Rail
-
Screw
24V
500VAC
-
3 Phase
-
200VAC
500V
UL
2504231

RoHS

Each
1+
CHF 75.730
5+
CHF 74.390
10+
CHF 73.080
Min: 1 / Mult: 1
K8AK
DPDT-NC
5A
DIN Rail
-
Screw
250V
480V
-
3 Phase
-
200VAC
480VAC
CSA, UL
2780442

RoHS

Each
1+
CHF 138.640
Min: 1 / Mult: 1
Zelio RM22UB
DPDT
8A
DIN Rail
-
Screw
250V
240VAC
-
1 Phase
2W
80V
300V
EN, IEC
3111269

RoHS

Each
1+
CHF 141.010
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250V
240VAC
-
3 Phase
10VA
200VAC
240VAC
-
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
250V
576VAC
-
3 Phase
15VA
380VAC
480VAC
-
3214134

RoHS

Each
1+
CHF 233.410
Min: 1 / Mult: 1
EMR6
DPDT
4A
DIN Rail
-
Screw
250V
500VAC
-
3 Phase
3VA
300VAC
500V
-
3214139

RoHS

Each
1+
CHF 230.590
Min: 1 / Mult: 1
EMR6
DPDT
4A
DIN Rail
-
Screw
250V
500VAC
-
3 Phase
18VA
300VAC
500V
-
3223352

RoHS

Each
1+
CHF 208.160
Min: 1 / Mult: 1
CM
DPDT
4A
DIN Rail
-
Screwless
230VAC
400VAC
-
3 Phase
-
360VAC
440VAC
-
3922060

RoHS

Each
1+
CHF 142.910
Min: 1 / Mult: 1
-
DPDT-CO
8A
DIN Rail
-
Screw
250V
576VAC
-
3 Phase
4VA
208VAC
480VAC
-
3214133

RoHS

Each
1+
CHF 191.060
Min: 1 / Mult: 1
EMR6
DPDT
4A
DIN Rail
-
Screw
500V
500VAC
-
3 Phase
15VA
300VAC
500V
-
1-25 of 139 items
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