Phase Monitoring Relays:

176 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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70Y5750

RoHS

Each
1+
$140.870
5+
$134.720
10+
$131.640
25+
$117.450
50+
$108.740
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+
$340.850
5+
$340.850
10+
$340.840
25+
$340.840
Min: 1 / Mult: 1
455 Series
-
SPDT
10A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
CSA, UL
72Y1059

RoHS

Each
1+
$281.760
5+
$263.270
10+
$246.800
25+
$229.230
50+
$217.500
More Pricing...
Min: 1 / Mult: 1
K8AK Series
-
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
-
66AH6834

RoHS

Each
1+
$265.840
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+
$364.070
5+
$339.140
10+
$319.190
25+
$297.580
50+
$280.950
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+
$242.280
5+
$221.810
10+
$201.330
25+
$188.390
50+
$179.870
Min: 1 / Mult: 1
460 Series
-
SPDT
10A
DIN Rail, Panel
Screw
-
240VAC
600VAC
-
3 Phase
6W
475VAC
600VAC
UL
66AH6836

RoHS

Each
1+
$225.980
Min: 1 / Mult: 1
Harmony RM22UB Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
1 Phase
2W
80V
300V
-
55AJ2778

RoHS

Each
1+
$277.300
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
3 Phase
10VA
200VAC
240VAC
-
05M4096

RoHS

Each
1+
$220.970
5+
$210.690
10+
$204.510
25+
$198.340
Min: 1 / Mult: 1
DPA53 Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
240V
-
3 Phase
7VA
160VAC
240VAC
-
41Y4153

RoHS

Each
1+
$421.660
5+
$392.780
10+
$369.690
25+
$344.650
50+
$325.400
More Pricing...
Min: 1 / Mult: 1
K8AK-AS Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
24V
-
1 Phase
-
-
-
-
55AJ2777

RoHS

Each
1+
$272.820
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+
$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+
$688.620
5+
$657.560
10+
$638.920
25+
$620.280
Min: 1 / Mult: 1
S142A Series
-
SPDT
8A
Socket
PC Pin
-
250VAC
24V
-
-
3.3VA
20.4VAC
27.6VAC
-
55T7542

RoHS

Each
1+
$185.540
10+
$176.770
25+
$168.000
50+
$159.230
100+
$150.460
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+
$340.980
5+
$325.600
10+
$316.370
25+
$307.140
Min: 1 / Mult: 1
DPC01 Series
-
2 x SPDT
5A
DIN Rail
Screw
-
24VDC
690VAC
-
3 Phase
-
177VAC
793VAC
-
23AH3169

RoHS

Each
1+
$435.640
5+
$421.690
10+
$402.450
25+
$383.170
50+
$333.340
Min: 1 / Mult: 1
EMR6 Series
-
DPDT
4A
DIN Rail
Screw
-
250VAC
500VAC
-
3 Phase
18VA
300VAC
500V
-
50AJ8750

RoHS

Each
1+
$151.900
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
15VA
183VAC
528V
-
26AK3439

RoHS

Each
1+
$231.310
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT-CO
8A
DIN Rail
Screw
-
250VAC
576VAC
-
3 Phase
4VA
208VAC
480VAC
-
11R2673

RoHS

Each
1+
$242.410
10+
$208.630
25+
$200.570
50+
$191.800
100+
$175.940
More Pricing...
Min: 1 / Mult: 1
-
-
DPDT
-
DIN Rail
Screw
-
230V
500VAC
-
3 Phase
-
-
-
-
66AH6827

RoHS

Each
1+
$230.370
Min: 1 / Mult: 1
Harmony RM17 Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
-
-
-
24W8372

RoHS

Each
1+
$1,154.400
5+
$1,117.410
10+
$1,066.450
25+
$1,015.340
50+
$883.310
Min: 1 / Mult: 1
BD 9080 Series
-
DPDT
-
DIN Rail
Screw
-
230V
400VAC
-
3 Phase
2.4VA
-
-
-
27R0593
Each
1+
$352.790
5+
$336.870
10+
$327.320
25+
$317.770
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+
$416.660
5+
$416.660
10+
$416.660
25+
$416.660
Min: 1 / Mult: 1
S142A Series
-
SPDT
8A
Socket
PC Pin
-
250VAC
24V
-
-
3.3VA
20.4VAC
27.6VAC
-
67AH3181

RoHS

Each
1+
$242.190
10+
$229.740
25+
$209.430
Min: 1 / Mult: 1
Harmony RM17 Series
-
DPDT
5A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
22VA
183VAC
484V
-
26-50 of 176 items
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