Phase Monitoring Relays:

175 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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72Y1059

RoHS

Each
1+
$283.690
5+
$264.510
10+
$256.320
25+
$247.560
50+
$236.080
Min: 1 / Mult: 1
K8AK Series
-
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
-
66AH6834

RoHS

Each
1+
$268.400
Min: 1 / Mult: 1
Harmony RM22UA Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
1 Phase
1.5W
15V
500V
-
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+
$225.210
Min: 1 / Mult: 1
Harmony RM22UB Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
1 Phase
2W
80V
300V
-
55AJ2778

RoHS

Each
1+
$279.210
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240V
-
3 Phase
10VA
200VAC
240VAC
-
05M4096

RoHS

Each
1+
$223.310
5+
$213.020
10+
$206.850
25+
$200.680
Min: 1 / Mult: 1
DPA53 Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
240V
-
3 Phase
7VA
160VAC
240VAC
-
55AJ2777

RoHS

Each
1+
$271.860
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+
$692.170
5+
$661.100
10+
$642.460
25+
$623.820
Min: 1 / Mult: 1
S142A Series
-
SPDT
8A
Socket
PC Pin
-
250VAC
24VAC
-
-
3.3VA
20.4VAC
27.6VAC
-
55T7542

RoHS

Each
1+
$186.930
10+
$178.160
25+
$169.390
50+
$160.620
100+
$151.850
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+
$342.740
5+
$327.360
10+
$318.130
25+
$308.900
Min: 1 / Mult: 1
DPC01 Series
-
2 x SPDT
5A
DIN Rail
Screw
-
24VDC
690VAC
-
3 Phase
-
177VAC
793VAC
-
23AH3169

RoHS

Each
1+
$441.950
5+
$427.930
10+
$408.590
25+
$389.220
50+
$339.150
Min: 1 / Mult: 1
EMR6 Series
-
DPDT
4A
DIN Rail
Screw
-
250VAC
500VAC
-
3 Phase
18VA
300VAC
500V
-
50AJ8750

RoHS

Each
1+
$152.820
Min: 1 / Mult: 1
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
15VA
183VAC
528V
-
11R2673

RoHS

Each
1+
$242.500
10+
$208.960
25+
$200.970
50+
$192.250
100+
$176.520
More Pricing...
Min: 1 / Mult: 1
-
-
DPDT
-
DIN Rail
Screw
-
230V
500VAC
-
3 Phase
-
-
-
-
66AH6827

RoHS

Each
1+
$208.550
Min: 1 / Mult: 1
Harmony RM17 Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
-
-
-
24W8372

RoHS

Each
1+
$1,156.730
5+
$1,120.020
10+
$1,069.430
25+
$1,018.710
50+
$887.660
Min: 1 / Mult: 1
BD 9080 Series
-
DPDT
-
DIN Rail
Screw
-
230V
400VAC
-
3 Phase
2.4VA
-
-
-
27R0593
Each
1+
$354.610
5+
$338.690
10+
$329.140
25+
$319.590
Min: 1 / Mult: 1
DPC01 Series
-
2 x SPDT
5A
DIN Rail
Screw
-
24VDC
480VAC
-
3 Phase
-
374VAC
552VAC
-
67AH3181

RoHS

Each
1+
$231.670
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
Pricing is unavailable. Please contact customer services.
Harmony RM22 Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
15VA
380VAC
480VAC
-
53R1959

RoHS

Each
1+
$153.220
10+
$140.130
25+
$138.270
50+
$134.950
100+
$126.340
More Pricing...
Min: 1 / Mult: 1
-
-
SPST-NC
-
DIN Rail
Screw
-
230V
400VAC
-
3 Phase
-
-
-
-
06X0781
Each
1+
$218.930
Min: 1 / Mult: 1
SLU Series
-
SPDT
10A
Socket
Plug In
-
240VAC
550VAC
-
3 Phase
90VA
200VAC
500V
-
69AK8666

RoHS

Each
1+
$66.560
100+
$66.560
250+
$66.560
500+
$66.560
1000+
$66.560
Min: 1 / Mult: 1
-
-
DPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
10VA
-
415VAC
-
69AK8664

RoHS

Each
1+
$58.730
100+
$58.730
250+
$58.730
500+
$58.730
1000+
$58.730
Min: 1 / Mult: 1
-
-
DPDT
5A
DIN Rail
Screw
-
250VAC
240V
-
1 Phase, 3 Phase
5VA
-
240VAC
-
69AK8663

RoHS

Each
1+
$58.730
100+
$58.730
250+
$58.730
500+
$58.730
1000+
$58.730
Min: 1 / Mult: 1
-
-
DPDT
5A
DIN Rail
Screw
-
250VAC
240V
-
3 Phase
5VA
-
240VAC
-
26-50 of 175 items
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