Phase Monitoring Relays:

178 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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ComparePrice forQuantity
70Y5750

RoHS

Each
1+
$158.100
5+
$148.190
10+
$139.350
25+
$129.930
50+
$123.630
More Pricing...
Min: 1 / Mult: 1
K8AK Series
-
DPDT-NC
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
-
200VAC
480VAC
-
34AC8897

RoHS

Date/Lot Code

Each
1+
$411.610
5+
$377.630
10+
$343.640
25+
$322.570
Min: 1 / Mult: 1
455 Series
-
SPDT
10A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
CSA, UL
72Y1059

RoHS

Each
1+
$294.890
5+
$275.710
10+
$267.520
25+
$258.770
50+
$247.290
Min: 1 / Mult: 1
K8AK Series
-
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
-
23AH3161

RoHS

Each
1+
$465.450
5+
$451.210
10+
$431.600
25+
$411.930
50+
$361.130
Min: 1 / Mult: 1
EMR6 Series
-
DPDT
4A
DIN Rail
Screw
-
250VAC
500VAC
-
3 Phase
3VA
300VAC
500VAC
-
66AH6834

RoHS

Each
1+
$278.990
Min: 1 / Mult: 1
Harmony RM22UA Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
1 Phase
1.5W
15V
500VAC
-
84X8729

RoHS

Date/Lot Code

Each
1+
$382.370
5+
$357.430
10+
$337.480
25+
$315.870
50+
$299.240
More Pricing...
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+
$247.230
5+
$226.340
10+
$205.450
25+
$192.240
50+
$183.540
Min: 1 / Mult: 1
460 Series
-
SPDT
10A
DIN Rail, Panel
Screw
-
240VAC
600VAC
-
3 Phase
6W
475VAC
600VAC
UL
23AH3162

RoHS

Each
1+
$381.840
5+
$370.160
10+
$354.060
25+
$337.940
50+
$296.250
Min: 1 / Mult: 1
EMR6 Series
-
DPDT
4A
DIN Rail
Screw
-
500V
500VAC
-
3 Phase
15VA
300VAC
500VAC
-
66AH6836

RoHS

Each
1+
$235.540
Min: 1 / Mult: 1
Harmony RM22UB Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
1 Phase
2W
80V
300V
-
05M4096

RoHS

Each
1+
$232.690
5+
$222.400
10+
$216.230
25+
$210.060
Min: 1 / Mult: 1
DPA53 Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
240V
-
3 Phase
7VA
160VAC
240VAC
-
41Y4153

RoHS

Each
1+
$442.860
5+
$413.960
10+
$390.870
25+
$365.840
50+
$346.580
More Pricing...
Min: 1 / Mult: 1
K8AK-AS Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
24V
-
1 Phase
-
-
-
-
15AJ5694

RoHS

Date/Lot Code

Each
1+
$1,276.790
5+
$1,140.850
10+
$995.380
25+
$918.430
50+
$827.990
Min: 1 / Mult: 1
PC1 Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
-
-
3 Phase
3VA
190VAC
600VAC
-
43W4762

RoHS

Date/Lot Code

Each
1+
$720.500
5+
$689.430
10+
$670.790
25+
$652.150
Min: 1 / Mult: 1
S142A Series
-
SPDT
8A
Socket
PC Pin
-
250VAC
24V
-
-
3.3VA
20.4VAC
27.6VAC
-
55T7542

RoHS

Each
1+
$193.850
10+
$185.080
25+
$176.310
50+
$167.540
100+
$158.770
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
Pricing is unavailable. Please contact customer services.
Harmony RM35UB3 Series
-
DPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
2.9VA
194V
528V
-
12AH0513
Each
1+
$346.540
5+
$331.600
10+
$322.640
25+
$313.670
Min: 1 / Mult: 1
DPC01 Series
-
2 x SPDT
5A
DIN Rail
Screw
-
24VDC
690VAC
-
3 Phase
-
177VAC
793VAC
-
23AH3169

RoHS

Each
1+
$458.680
5+
$444.650
10+
$425.320
25+
$405.940
50+
$355.870
Min: 1 / Mult: 1
EMR6 Series
-
DPDT
4A
DIN Rail
Screw
-
250VAC
500VAC
-
3 Phase
18VA
300VAC
500VAC
-
50AJ8750

RoHS

Each
1+
$152.380
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
15VA
183VAC
528V
-
26AK3439

RoHS

Each
1+
$270.150
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT-CO
8A
DIN Rail
Screw
-
250VAC
576VAC
-
3 Phase
4VA
208VAC
480VAC
-
11R2673

RoHS

Each
1+
$253.260
10+
$219.440
25+
$211.380
50+
$202.600
100+
$186.720
More Pricing...
Min: 1 / Mult: 1
-
-
DPDT
-
DIN Rail
Screw
-
230V
500VAC
-
3 Phase
-
-
-
-
66AH6827

RoHS

Each
1+
$215.380
Min: 1 / Mult: 1
Harmony RM17 Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
-
-
-
24W8372

RoHS

Each
1+
$1,216.450
5+
$1,179.420
10+
$1,128.390
25+
$1,077.230
50+
$945.040
Min: 1 / Mult: 1
BD 9080 Series
-
DPDT
-
DIN Rail
Screw
-
230V
400VAC
-
3 Phase
2.4VA
-
-
-
27R0593
Each
1+
$369.120
5+
$353.200
10+
$343.650
25+
$334.100
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+
$720.500
5+
$689.430
10+
$670.790
25+
$652.150
Min: 1 / Mult: 1
S142A Series
-
SPDT
8A
Socket
PC Pin
-
250VAC
24V
-
-
3.3VA
20.4VAC
27.6VAC
-
67AH3181

RoHS

Each
1+
$241.540
Min: 1 / Mult: 1
Harmony RM17 Series
-
DPDT
5A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
22VA
183VAC
484V
-
26-50 of 178 items
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