Phase Monitoring Relays:

166 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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ComparePrice ForQuantity
4163403

RoHS

Each
1+
US$51.992
5+
US$49.915
10+
US$48.937
20+
US$47.985
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
4163407

RoHS

Each
1+
US$70.511
5+
US$67.683
10+
US$66.343
20+
US$65.070
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4163398

RoHS

Each
1+
US$76.032
5+
US$72.990
10+
US$71.556
20+
US$70.189
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
16VA
208VAC
480VAC
-
4163402

RoHS

Each
1+
US$49.151
5+
US$47.181
10+
US$46.257
20+
US$45.372
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
4163395

RoHS

Each
1+
US$79.489
5+
US$76.313
10+
US$74.826
20+
US$73.378
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
-
4259624
Each
1+
US$244.724
Min: 1 / Mult: 1
-
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
2295793

RoHS

Each
1+
US$164.177
5+
US$157.477
10+
US$154.328
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
-
Screw
250VAC
415VAC
-
3 Phase
11VA
380VAC
415VAC
-
2056305

RoHS

Each
1+
US$315.490
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
194VAC
528VAC
-
2056304

RoHS

Each
1+
US$131.802
5+
US$129.163
10+
US$126.536
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
-
Screw
250VAC
440VAC
-
3 Phase
22VA
183V
484V
-
1344233

RoHS

Each
1+
US$93.599
5+
US$89.793
10+
US$87.998
Min: 1 / Mult: 1
70 Series
SPDT
6A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
1W
208VAC
480VAC
-
1895998

RoHS

Each
1+
US$95.100
5+
US$90.343
10+
US$85.586
Min: 1 / Mult: 1
CM-PFE
SPDT
4A
DIN Rail
-
Screw
250VAC
440VAC
-
3 Phase
15VA
208VAC
440VAC
UL
9515399

RoHS

Each
1+
US$169.952
5+
US$144.090
10+
US$141.209
Min: 1 / Mult: 1
MK 9056
DPDT
-
DIN Rail
-
Screw
230VAC
500VAC
-
3 Phase
-
-
-
-
2507225

RoHS

Each
1+
US$80.869
5+
US$79.248
10+
US$77.640
Min: 1 / Mult: 1
K8DS
SPDT
5A
DIN Rail
-
Screw
-
480VAC
-
3 Phase
-
-
-
-
2455513

RoHS

Each
1+
US$120.546
5+
US$118.134
10+
US$115.722
Min: 1 / Mult: 1
Zelio
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
-
-
-
2507215

RoHS

Each
1+
US$184.518
Min: 1 / Mult: 1
K8AK
SPDT
5A
DIN Rail
-
Screw
-
480VAC
-
3 Phase
-
-
-
-
2835320

RoHS

Each
1+
US$186.448
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
380VAC
480VAC
CE, CSA, EN, IEC, UL
3111268

RoHS

Each
1+
US$80.253
5+
US$78.645
10+
US$77.037
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
183V
528VAC
-
2780443

RoHS

Each
1+
US$297.359
Min: 1 / Mult: 1
Zelio RM35UB3
DPDT
5A
DIN Rail
-
Screw
250VAC
277VAC
-
3 Phase
3.9VA
114VAC
329VAC
EN, IEC
9514430

RoHS

Each
1+
US$854.572
Min: 1 / Mult: 1
BD 9080
DPDT
-
DIN Rail
-
Screw
230VAC
400VAC
-
3 Phase
2.4VA
-
-
-
2504231

RoHS

Each
1+
US$92.259
5+
US$90.611
10+
US$89.016
Min: 1 / Mult: 1
K8AK
DPDT-NC
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
-
200VAC
480VAC
CSA, UL
3111267

RoHS

Each
1+
US$136.640
5+
US$133.906
10+
US$131.173
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250VAC
576VAC
-
3 Phase
15VA
380VAC
480VAC
-
3111269

RoHS

Each
1+
US$169.952
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
3 Phase
10VA
200VAC
240VAC
-
2780442

RoHS

Each
1+
US$204.819
Min: 1 / Mult: 1
Zelio RM22UB
DPDT
8A
DIN Rail
-
Screw
250VAC
240VAC
-
1 Phase
2W
80V
300V
EN, IEC
3214139

RoHS

Each
1+
US$274.995
Min: 1 / Mult: 1
EMR6
DPDT
4A
DIN Rail
-
Screw
250VAC
500VAC
-
3 Phase
18VA
300VAC
500VAC
-
3223352

RoHS

Each
1+
US$251.277
Min: 1 / Mult: 1
CM
DPDT
4A
DIN Rail
-
Screwless
230VAC
400VAC
-
3 Phase
-
360VAC
440VAC
-
1-25 of 166 items
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