Phase Monitoring Relays:

179 Products Found

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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34AC8900

RoHS

Date/Lot Code

Each
1+
$179.490
5+
$164.310
10+
$149.120
25+
$139.520
50+
$133.190
Total:$179.49
Min: 1 / Mult: 1
460 Series
-
SPDT
10A
DIN Rail
Screw
-
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
CE, IEC, UL
34AC8897

RoHS

Date/Lot Code

Each
1+
$305.000
5+
$279.820
10+
$254.640
25+
$239.020
Total:$305.00
Min: 1 / Mult: 1
455 Series
-
SPDT
10A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
CSA, UL
66AH6834

RoHS

Each
1+
$193.260
Total:$193.26
Min: 1 / Mult: 1
Harmony RM22UA Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
1 Phase
1.5W
15V
500V
-
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
-
34AC8913

RoHS

Date/Lot Code

Each
1+
$183.200
5+
$167.710
10+
$152.230
25+
$142.450
50+
$136.000
Total:$183.20
Min: 1 / Mult: 1
460 Series
-
SPDT
10A
DIN Rail, Panel
Screw
-
240VAC
600VAC
-
3 Phase
6W
475VAC
600VAC
UL
55AJ2778

RoHS

Each
1+
$206.990
Total:$206.99
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
3 Phase
10VA
200VAC
240VAC
-
66AH6836

RoHS

Each
1+
$169.450
Total:$169.45
Min: 1 / Mult: 1
Harmony RM22UB Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
1 Phase
2W
80V
300V
-
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
240V
-
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
-
-
-
-
55AJ2777

RoHS

Each
1+
$202.500
Total:$202.50
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
576VAC
-
3 Phase
15VA
380VAC
480VAC
-
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
-
43W4762

RoHS

Date/Lot Code

Each
1+
$518.340
5+
$495.990
10+
$482.580
25+
$469.170
Total:$518.34
Min: 1 / Mult: 1
S142A Series
-
SPDT
8A
Socket
PC Pin
-
250VAC
24V
-
-
3.3VA
20.4VAC
27.6VAC
-
55T7542

RoHS

Each
1+
$139.460
10+
$133.150
25+
$126.840
50+
$120.530
100+
$114.220
Total:$139.46
Min: 1 / Mult: 1
CM-PFE Series
-
SPDT
4A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
15VA
208VAC
440VAC
-
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
528V
-
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
-
50AJ8750

RoHS

Each
1+
$110.610
Total:$110.61
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
15VA
183VAC
528V
-
23AH3169

RoHS

Each
1+
$329.980
5+
$319.890
10+
$305.980
25+
$292.040
50+
$256.020
Total:$329.98
Min: 1 / Mult: 1
EMR6 Series
-
DPDT
4A
DIN Rail
Screw
-
250VAC
500VAC
-
3 Phase
18VA
300VAC
500V
-
26AK3439

RoHS

Each
1+
$174.140
Total:$174.14
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT-CO
8A
DIN Rail
Screw
-
250VAC
576VAC
-
3 Phase
4VA
208VAC
480VAC
-
11R2673

RoHS

Each
1+
$182.640
10+
$158.250
25+
$152.430
50+
$146.100
100+
$134.650
More Pricing...
Total:$182.64
Min: 1 / Mult: 1
-
-
DPDT
-
DIN Rail
Screw
-
230V
500VAC
-
3 Phase
-
-
-
-
66AH6827

RoHS

Each
1+
$154.950
Total:$154.95
Min: 1 / Mult: 1
Harmony RM17 Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
-
-
-
24W8372

RoHS

Each
1+
$877.240
5+
$850.540
10+
$813.740
25+
$776.840
50+
$681.510
Total:$877.24
Min: 1 / Mult: 1
BD 9080 Series
-
DPDT
-
DIN Rail
Screw
-
230V
400VAC
-
3 Phase
2.4VA
-
-
-
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
-
27R1423

RoHS

Date/Lot Code

Each
1+
$518.340
5+
$495.990
10+
$482.580
25+
$469.170
Total:$518.34
Min: 1 / Mult: 1
S142A Series
-
SPDT
8A
Socket
PC Pin
-
250VAC
24V
-
-
3.3VA
20.4VAC
27.6VAC
-
67AH3181

RoHS

Each
1+
$168.790
Total:$168.79
Min: 1 / Mult: 1
Harmony RM17 Series
-
DPDT
5A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
22VA
183VAC
484V
-
06AC2593

RoHS

Date/Lot Code

Each
1+
$156.740
Total:$156.74
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
15VA
380VAC
480VAC
-
26-50 of 179 items
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