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Phase Monitoring Relays:

141 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+
kr558.470
5+
kr536.100
10+
kr525.530
20+
kr515.400
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
3VA
208VAC
480VAC
-
4163403

RoHS

Each
1+
kr496.300
5+
kr476.400
10+
kr467.000
20+
kr458.140
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
4163396

RoHS

Each
1+
kr872.980
5+
kr837.930
10+
kr821.570
20+
kr805.760
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
-
4163406

RoHS

Each
1+
kr634.480
5+
kr609.110
10+
kr597.090
20+
kr585.620
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4163405

RoHS

Each
1+
kr634.480
5+
kr609.110
10+
kr597.090
20+
kr585.620
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
240VAC
-
1 Phase, 3 Phase
5VA
-
240VAC
-
4163398

RoHS

Each
1+
kr734.210
5+
kr704.850
10+
kr691.040
20+
kr677.660
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
16VA
208VAC
480VAC
-
4163402

RoHS

Each
1+
kr469.080
5+
kr450.270
10+
kr441.420
20+
kr433.000
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
4163397

RoHS

Each
1+
kr935.860
5+
kr898.360
10+
kr880.770
20+
kr863.860
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
240VAC
300V
-
3 Phase
5VA
85V
300V
-
4163408

RoHS

Each
1+
kr719.180
5+
kr690.460
10+
kr676.880
20+
kr663.860
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4163404

RoHS

Each
1+
kr634.480
5+
kr609.110
10+
kr597.090
20+
kr585.620
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
240VAC
-
3 Phase
5VA
-
240VAC
-
4163399

RoHS

Each
1+
kr497.930
5+
kr478.000
10+
kr468.660
20+
kr459.640
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
3.5VA
208VAC
480VAC
-
4163395

RoHS

Each
1+
kr767.590
5+
kr736.930
10+
kr722.470
20+
kr708.550
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
-
Screw
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
-
4163407

RoHS

Each
1+
kr672.950
5+
kr645.950
10+
kr633.380
20+
kr621.130
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
-
Screw
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
4259624
Each
1+
kr2,475.000
Min: 1 / Mult: 1
-
SPDT
10A
Socket
-
Plug In
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
-
2295793

RoHS

Each
1+
kr1,337.000
5+
kr1,310.000
10+
kr1,284.000
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
-
Screw
250VAC
415VAC
-
3 Phase
11VA
380VAC
415VAC
-
2056305

RoHS

Each
1+
kr2,218.000
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
194VAC
528VAC
-
2056304

RoHS

Each
1+
kr1,031.000
5+
kr1,010.000
10+
kr989.700
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
-
Screw
250VAC
440VAC
-
3 Phase
22VA
183V
484V
-
1344233

RoHS

Each
1+
kr762.260
5+
kr747.070
10+
kr731.760
Min: 1 / Mult: 1
70 Series
SPDT
6A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
1W
208VAC
480VAC
-
1895998

RoHS

Each
1+
kr1,173.000
5+
kr1,150.000
10+
kr1,127.000
Min: 1 / Mult: 1
CM-PFE
SPDT
4A
DIN Rail
-
Screw
250VAC
440VAC
-
3 Phase
15VA
208VAC
440VAC
UL
9515399

RoHS

Each
1+
kr1,628.000
Min: 1 / Mult: 1
MK 9056
DPDT
-
DIN Rail
-
Screw
230VAC
500VAC
-
3 Phase
-
-
-
-
2507225

RoHS

Each
1+
kr798.560
5+
kr782.590
10+
kr766.630
Min: 1 / Mult: 1
K8DS
SPDT
5A
DIN Rail
-
Screw
-
480VAC
-
3 Phase
-
-
-
-
2455513

RoHS

Each
1+
kr999.730
5+
kr979.780
10+
kr959.720
Min: 1 / Mult: 1
Zelio
SPDT
5A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
22VA
-
-
-
2507215

RoHS

Each
1+
kr1,834.000
Min: 1 / Mult: 1
K8AK
SPDT
5A
DIN Rail
-
Screw
-
480VAC
-
3 Phase
-
-
-
-
2780443

RoHS

Each
1+
kr2,160.000
Min: 1 / Mult: 1
Zelio RM35UB3
DPDT
5A
DIN Rail
-
Screw
250VAC
277VAC
-
3 Phase
3.9VA
114VAC
329VAC
EN, IEC
3111268

RoHS

Each
1+
kr899.780
5+
kr881.760
10+
kr863.740
Min: 1 / Mult: 1
Zelio
DPDT
8A
DIN Rail
-
Screw
250VAC
480VAC
-
3 Phase
15VA
183V
528VAC
-
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