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Phase Monitoring Relays :

187 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
4163401

RoHS

Each
1+
US$55.811
5+
US$54.632
10+
US$53.372
20+
US$51.295
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
3VA
208VAC
480VAC
-
4163403

RoHS

Each
1+
US$53.265
5+
US$52.126
10+
US$50.933
20+
US$48.937
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
4163405

RoHS

Each
1+
US$67.469
5+
US$66.035
10+
US$64.521
20+
US$61.988
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
240VAC
-
1 Phase, 3 Phase
5VA
-
240VAC
-
4163396

RoHS

Each
1+
US$92.822
5+
US$90.852
10+
US$88.762
20+
US$85.291
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
-
4163404

RoHS

Each
1+
US$79.154
5+
US$77.465
10+
US$75.697
20+
US$72.735
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
240VAC
-
3 Phase
5VA
-
240VAC
-
4163406

RoHS

Each
1+
US$67.469
5+
US$66.035
10+
US$64.521
20+
US$61.988
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4163402

RoHS

Each
1+
US$53.051
5+
US$51.925
10+
US$50.732
20+
US$48.749
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
4163398

RoHS

Each
1+
US$77.881
5+
US$76.246
10+
US$74.491
20+
US$71.569
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
16VA
208VAC
480VAC
-
4163397

RoHS

Each
1+
US$127.903
5+
US$121.257
10+
US$118.175
20+
US$115.253
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
240VAC
300V
-
3 Phase
5VA
85V
300V
-
4163408

RoHS

Each
1+
US$76.474
5+
US$74.852
10+
US$73.137
20+
US$70.256
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4163407

RoHS

Each
1+
US$72.226
5+
US$70.698
10+
US$69.064
20+
US$66.357
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4163399

RoHS

Each
1+
US$52.943
5+
US$51.818
10+
US$50.639
20+
US$48.655
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
3.5VA
208VAC
480VAC
-
4163395

RoHS

Each
1+
US$85.814
5+
US$83.991
10+
US$82.062
20+
US$78.859
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
-
2295793

RoHS

Each
1+
US$169.108
5+
US$162.207
10+
US$158.964
70 Series
SPDT
10A
DIN Rail, Panel
-
Screw
250VAC
415VAC
-
3 Phase
11VA
380VAC
415VAC
-
2056305

RoHS

Each
1+
US$315.490
Harmony RM35 Series
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
Harmony RM17 Series
DPDT
5A
DIN Rail
-
Screw
250VAC
440VAC
-
3 Phase
22VA
183V
484V
-
1344233

RoHS

Each
1+
US$96.413
5+
US$92.487
10+
US$90.638
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
CM-PFE Series
SPDT
4A
DIN Rail
-
Screw
250VAC
440VAC
-
3 Phase
15VA
208VAC
440VAC
UL
9515399

RoHS

Each
1+
US$168.987
-
DPDT
-
DIN Rail
-
Screw
230VAC
500VAC
-
3 Phase
-
-
-
-
2455513

RoHS

Each
1+
US$120.546
5+
US$118.134
10+
US$115.722
Harmony RM17 Series
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
-
-
-
2507225

RoHS

Each
1+
US$84.112
5+
US$82.423
10+
US$80.748
K8DS Series
SPDT
5A
DIN Rail
-
Screw
-
480VAC
-
3 Phase
-
-
-
-
2780443

RoHS

Each
1+
US$297.359
Harmony RM35UB3 Series
DPDT
5A
DIN Rail
-
Screw
250VAC
277VAC
-
3 Phase
3.9VA
114VAC
329VAC
EN, IEC
2835320

RoHS

Each
1+
US$186.448
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
380VAC
480VAC
CE, CSA, EN, IEC, UL
3111268

RoHS

Each
1+
US$93.666
5+
US$91.790
10+
US$89.914
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
183V
528VAC
-
9515046

RoHS

Each
1+
US$120.587
5+
US$102.229
10+
US$100.178
-
SPST-NC
-
DIN Rail
-
Screw
230VAC
400VAC
-
3 Phase
-
-
-
-
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