Element14 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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4163396

RoHS

Each
1+
HK$809.840
5+
HK$699.680
10+
HK$685.990
20+
HK$672.850
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
4163401

RoHS

Each
1+
HK$518.050
5+
HK$447.660
10+
HK$438.930
20+
HK$430.420
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
3VA
208VAC
480VAC
4163403

RoHS

Each
1+
HK$418.240
5+
HK$401.530
10+
HK$393.660
20+
HK$386.000
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
4163405

RoHS

Each
1+
HK$588.560
5+
HK$508.570
10+
HK$498.550
20+
HK$488.960
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
250VAC
240VAC
-
1 Phase, 3 Phase
5VA
-
240VAC
4163404

RoHS

Each
1+
HK$588.560
5+
HK$508.570
10+
HK$498.550
20+
HK$488.960
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
250VAC
240VAC
-
3 Phase
5VA
-
240VAC
4163406

RoHS

Each
1+
HK$588.560
5+
HK$508.570
10+
HK$498.550
20+
HK$488.960
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
4163398

RoHS

Each
1+
HK$611.620
5+
HK$587.160
10+
HK$575.610
20+
HK$564.620
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
16VA
208VAC
480VAC
4163402

RoHS

Each
1+
HK$395.380
5+
HK$379.540
10+
HK$372.110
20+
HK$364.990
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
4163397

RoHS

Each
1+
HK$868.160
5+
HK$750.130
10+
HK$735.360
20+
HK$721.340
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
240VAC
300V
-
3 Phase
5VA
85V
300V
4163408

RoHS

Each
1+
HK$667.240
5+
HK$576.480
10+
HK$565.160
20+
HK$554.280
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
4163399

RoHS

Each
1+
HK$461.890
5+
HK$399.160
10+
HK$391.290
20+
HK$383.750
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
3.5VA
208VAC
480VAC
4163395

RoHS

Each
1+
HK$639.430
5+
HK$613.890
10+
HK$601.920
20+
HK$590.280
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
4163407

RoHS

Each
1+
HK$567.200
5+
HK$544.470
10+
HK$533.690
20+
HK$523.440
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
2056305

RoHS

Each
1+
HK$2,921.040
Min: 1 / Mult: 1
Harmony RM35 Series
DPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
194VAC
528VAC
2455513

RoHS

Each
1+
HK$781.140
5+
HK$757.680
10+
HK$742.530
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
-
-
2780443

RoHS

Each
1+
HK$2,448.960
Min: 1 / Mult: 1
Harmony RM35UB3 Series
DPDT
5A
DIN Rail
Screw
-
250VAC
277VAC
-
3 Phase
3.9VA
114VAC
329VAC
2504231

RoHS

Each
1+
HK$553.490
5+
HK$542.430
10+
HK$531.360
Min: 1 / Mult: 1
K8AK Series
DPDT-NC
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
-
200VAC
480VAC
2507215

RoHS

Each
1+
HK$1,126.080
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
2507225

RoHS

Each
1+
HK$501.150
5+
HK$491.130
10+
HK$481.100
Min: 1 / Mult: 1
K8DS Series
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
4377819

RoHS

Each
1+
HK$764.360
5+
HK$759.600
10+
HK$754.840
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
Screw
-
24VDC
480VAC
-
3 Phase
13VA
177VAC
552VAC
4300429

RoHS

Each
1+
HK$1,142.670
5+
HK$1,058.030
10+
HK$1,036.870
Min: 1 / Mult: 1
DPB51 Series
SPDT
5A
DIN Rail, Panel
Screw
-
250VAC
-
-
3 Phase
13VA
208VAC
480VAC
4259621
Each
1+
HK$851.140
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
230VAC
-
3 Phase
8VA
170VAC
290VAC
2811545

RoHS

Each
1+
HK$304.800
5+
HK$301.620
10+
HK$298.440
20+
HK$292.480
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
250V
250VAC
415VAC
28V
3 Phase
15VA
-
415VAC
2780436

RoHS

Each
1+
HK$1,438.610
5+
HK$1,317.760
10+
HK$1,196.910
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
Screw
-
250VAC
48V
-
1 Phase
3.9VA
20V
80V
2780435

RoHS

Each
1+
HK$1,826.410
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
183VAC
528VAC
1-25 of 37 items
of 2 page(s)

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