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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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3440423

RoHS

Each
1+
US$150.348
Total:US$150.35
Min: 1 / Mult: 1
K8DS Series
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
2.8VA
-
-
-
3223355

RoHS

Each
1+
US$298.378
Total:US$298.38
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
-
Screwless
230VAC
170VAC
-
3 Phase
-
90VAC
170VAC
-
3215091

RoHS

Each
1+
US$144.666
Total:US$144.67
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
-
Screw
250VAC
528VAC
-
3 Phase
22VA
208VAC
480VAC
-
2578929

RoHS

Each
1+
US$84.929
5+
US$83.227
10+
US$81.526
Total:US$84.93
Min: 1 / Mult: 1
K8DT-PH Series
SPDT
-
DIN Rail
-
Screw
-
480VAC
-
3 Phase
2.6VA
200VAC
480VAC
UL
2578932

RoHS

Each
1+
US$145.497
Total:US$145.50
Min: 1 / Mult: 1
K8DT-PM Series
SPST-NO
-
DIN Rail
-
Screw
-
480VAC
-
3 Phase
2.7VA
-
-
UL
2612116

RoHS

Each
1+
US$87.837
Total:US$87.84
Min: 1 / Mult: 1
K8AK Series
DPDT
5A
DIN Rail
-
Screw
-
480VAC
-
3 Phase
4.1VA
-
-
UL
2813562
Each
1+
US$174.897
Total:US$174.90
Min: 1 / Mult: 1
460 Series
SPDT
10A
DIN Rail
-
Screw
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
CE, IEC, UL
2507211

RoHS

Each
1+
US$177.872
Total:US$177.87
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
-
Screw
-
240VAC
-
3 Phase
-
-
-
-
2507216

RoHS

Each
1+
US$199.137
Total:US$199.14
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
-
Screw
-
240VAC
-
3 Phase
-
-
-
-
2507213

RoHS

Each
1+
US$199.137
Total:US$199.14
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
-
Screw
-
240VAC
-
3 Phase
-
-
-
-
3111266

RoHS

Each
1+
US$220.122
Total:US$220.12
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
-
Screw
250VAC
288VAC
-
3 Phase
10VA
200VAC
240VAC
-
3214133

RoHS

Each
1+
US$240.329
Total:US$240.33
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
-
Screw
500V
500VAC
-
3 Phase
15VA
300VAC
500VAC
-
3214135

RoHS

Each
1+
US$382.530
Total:US$382.53
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
-
Screw
250VAC
580VAC
-
3 Phase
41VA
350VAC
580VAC
-
1853734

RoHS

Each
1+
US$182.669
Total:US$182.67
Min: 1 / Mult: 1
-
SPDT-NO
-
DIN Rail
-
Screw
-
230VAC
-
1 Phase
6W
-
-
-
2578934

RoHS

Each
1+
US$159.031
Total:US$159.03
Min: 1 / Mult: 1
K8DT-PZ Series
SPST-NO
-
DIN Rail
-
Screw
-
480VAC
-
3 Phase
2.7VA
-
-
UL
2578933

RoHS

Each
1+
US$164.713
Total:US$164.71
Min: 1 / Mult: 1
K8DT-PZ Series
SPDT
-
DIN Rail
-
Screw
-
480VAC
-
3 Phase
2.7VA
-
-
UL
2578930

RoHS

Each
1+
US$78.966
5+
US$77.385
10+
US$75.804
Total:US$78.97
Min: 1 / Mult: 1
K8DT-PH Series
SPST-NO
-
DIN Rail
-
Screw
-
480VAC
-
3 Phase
2.6VA
-
-
UL
2915307

RoHS

Each
1+
US$101.760
5+
US$100.661
10+
US$99.549
Total:US$101.76
Min: 1 / Mult: 1
EMD-BL Series
SPDT
5A
DIN Rail
-
Quick Connect
250VAC
480VAC
-
3 Phase
1.5W
187VAC
519VAC
CE, EAC, UL
3440427

RoHS

Each
1+
US$166.696
Total:US$166.70
Min: 1 / Mult: 1
K8DS Series
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
2.8VA
-
-
-
3223353

RoHS

Each
1+
US$229.019
Total:US$229.02
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
-
Screwless
230VAC
500VAC
-
3 Phase
-
300VAC
500VAC
-
3223348

RoHS

Each
1+
US$248.168
Total:US$248.17
Min: 1 / Mult: 1
CM Series
DPDT
4A
DIN Rail
-
Screwless
230VAC
500VAC
-
3 Phase
-
300VAC
500VAC
-
1390498

RoHS

Each
1+
US$176.746
Total:US$176.75
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
DPDT
3A
DIN Rail
-
Screw
400VAC
690VAC
-
3 Phase
2W
160VAC
690VAC
-
3487977

RoHS

Each
1+
US$274.445
Total:US$274.44
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
-
-
-
-
-
-
-
-
-
-
-
-
-
2811533

RoHS

Each
1+
US$64.642
5+
US$62.645
10+
US$60.005
20+
US$58.799
Total:US$64.64
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
250V
Screw
250VAC
415VAC
28V
3 Phase
10VA
-
415VAC
CE
2056345

RoHS

Each
1+
US$86.269
5+
US$79.341
10+
US$73.003
25+
US$67.174
Total:US$86.27
Min: 1 / Mult: 1
Harmony RM35HZ Series
SPDT
5A
DIN Rail
-
Screw
250VAC
277VAC
-
-
6W
-
277VAC
-
76-100 of 187 items
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