Newark 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
67C0900

RoHS

Each
1+
$110.850
5+
$105.950
10+
$103.010
25+
$100.070
Total:$110.85
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
13VA
177VAC
550VAC
-
05M4097

RoHS

Each
1+
$174.190
5+
$166.490
10+
$161.870
25+
$157.250
Total:$174.19
Min: 1 / Mult: 1
DPA53 Series
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
13VA
320VAC
480VAC
-
86K0442

RoHS

Each
1+
$188.800
Total:$188.80
Min: 1 / Mult: 1
MWU Series
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
1.8VA
183VAC
528VAC
-
72Y1070

RoHS

Each
1+
$101.200
5+
$96.980
10+
$94.860
25+
$85.120
50+
$79.140
More Pricing...
Total:$101.20
Min: 1 / Mult: 1
K8DS Series
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
-
38Y7644

RoHS

Date/Lot Code

Each
1+
$104.650
5+
$100.100
10+
$97.830
25+
$88.270
50+
$81.900
More Pricing...
Total:$104.65
Min: 1 / Mult: 1
K8AK Series
DPDT-NC
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
4.1VA
200VAC
480VAC
-
70Y5750

RoHS

Each
1+
$115.450
5+
$108.210
10+
$101.760
25+
$94.880
50+
$90.290
More Pricing...
Total:$115.45
Min: 1 / Mult: 1
K8AK Series
DPDT-NC
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
-
200VAC
480VAC
-
72Y1059

RoHS

Each
1+
$215.340
5+
$201.330
10+
$195.360
25+
$188.960
50+
$180.570
Total:$215.34
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
-
45AC6247

RoHS

Each
1+
$156.880
5+
$149.980
10+
$145.840
25+
$141.700
Total:$156.88
Min: 1 / Mult: 1
DPA52 Series
SPDT
5A
DIN Rail
-
-
480VAC
208VAC
-
3 Phase
2VA
480VAC
208VAC
CE, CSA, UL
84X8729

RoHS

Date/Lot Code

Each
1+
$275.080
5+
$257.140
10+
$242.790
25+
$227.240
50+
$215.280
More Pricing...
Total:$275.08
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
4.4VA
380VAC
480VAC
-
05M4096

RoHS

Each
1+
$167.400
5+
$160.000
10+
$155.560
25+
$151.120
Total:$167.40
Min: 1 / Mult: 1
DPA53 Series
SPDT
5A
DIN Rail
Screw
-
250VAC
240VAC
-
3 Phase
7VA
160VAC
240VAC
-
41Y4153

RoHS

Each
1+
$309.470
5+
$289.280
10+
$273.140
25+
$255.650
50+
$242.190
More Pricing...
Total:$309.47
Min: 1 / Mult: 1
K8AK-AS Series
SPDT
5A
DIN Rail
Screw
-
250VAC
24V
-
1 Phase
-
-
-
-
15AJ5694

RoHS

Date/Lot Code

Each
1+
$946.110
5+
$845.370
10+
$737.580
25+
$680.560
50+
$613.540
Total:$946.11
Min: 1 / Mult: 1
PC1 Series
SPDT
5A
DIN Rail
Screw
-
250VAC
-
-
3 Phase
3VA
190VAC
600VAC
-
09P6672

RoHS

Date/Lot Code

Each
1+
$272.370
Total:$272.37
Min: 1 / Mult: 1
Harmony RM35UB3 Series
DPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
2.9VA
194V
528VAC
-
12AH0513

RoHS

Each
1+
$249.310
5+
$238.560
10+
$232.110
25+
$225.660
Total:$249.31
Min: 1 / Mult: 1
DPC01 Series
2 x SPDT
5A
DIN Rail
Screw
-
24VDC
690VAC
-
3 Phase
-
177VAC
793VAC
-
66AH6827

RoHS

Each
1+
$155.530
Total:$155.53
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
-
-
-
27R0593

RoHS

Each
1+
$265.550
5+
$254.100
10+
$247.230
25+
$240.360
Total:$265.55
Min: 1 / Mult: 1
DPC01 Series
2 x SPDT
5A
DIN Rail
Screw
-
24VDC
480VAC
-
3 Phase
-
374VAC
552VAC
-
67AH3181

RoHS

Each
1+
$169.050
Total:$169.05
Min: 1 / Mult: 1
Harmony RM17 Series
DPDT
5A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
22VA
183VAC
484V
-
69AK8663

RoHS

Each
1+
$133.950
100+
$112.900
250+
$103.720
500+
$99.510
1000+
$94.530
Total:$133.95
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
250VAC
240VAC
-
3 Phase
5VA
-
240VAC
-
69AK8664

RoHS

Each
1+
$133.950
100+
$112.900
250+
$103.720
500+
$99.510
1000+
$94.530
Total:$133.95
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
250VAC
240VAC
-
1 Phase, 3 Phase
5VA
-
240VAC
-
69AK8666

RoHS

Each
1+
$151.810
100+
$127.960
250+
$117.550
500+
$112.780
1000+
$107.140
Total:$151.81
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
69AK8657

RoHS

Each
1+
$197.560
100+
$166.510
250+
$152.970
500+
$146.760
1000+
$139.420
Total:$197.56
Min: 1 / Mult: 1
-
DPDT
5A
DIN Rail
Screw
-
240VAC
300V
-
3 Phase
5VA
85V
300V
-
69AK8658

RoHS

Each
1+
$163.720
100+
$137.990
250+
$126.770
500+
$121.620
1000+
$115.540
Total:$163.72
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
16VA
208VAC
480VAC
-
69AK8655

RoHS

Each
1+
$143.980
100+
$117.590
250+
$106.070
500+
$100.790
1000+
$94.550
Total:$143.98
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
-
69AK8662

RoHS

Each
1+
$111.980
100+
$94.380
250+
$86.700
500+
$83.180
1000+
$79.020
Total:$111.98
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
69AK8661

RoHS

Each
1+
$105.820
100+
$89.190
250+
$81.940
500+
$78.610
1000+
$74.680
Total:$105.82
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
-
1-25 of 65 items
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