Phase Monitoring Relays:

134 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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72Y1056

RoHS

Each
1+
$209.720
5+
$196.090
10+
$183.950
25+
$170.990
50+
$162.330
More Pricing...
Min: 1 / Mult: 1
K8AK Series
-
SPDT
5A
DIN Rail
Screw
-
-
240VAC
-
3 Phase
-
-
-
-
34AH3016

RoHS

Each
1+
$442.430
5+
$432.020
10+
$421.590
25+
$400.750
Min: 1 / Mult: 1
CM Series
-
DPDT
4A
DIN Rail
Screwless
-
230VAC
500VAC
-
3 Phase
-
300VAC
500VAC
-
66AH6832

RoHS

Each
1+
$243.900
Min: 1 / Mult: 1
Harmony RM22UA Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
240VAC
-
1 Phase
1.5W
50mV
5V
-
86K0440

RoHS

Each
1+
$151.270
Min: 1 / Mult: 1
MWS2 Series
-
DPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
1.8VA
183VAC
484VAC
-
66Y0844

RoHS

Each
1+
$566.420
5+
$552.260
10+
$538.100
25+
$509.770
Min: 1 / Mult: 1
CM Series
-
DPDT
4A
DIN Rail
Screw
-
24V
580VAC
-
3 Phase
-
350VAC
580VAC
CSA, IEC, UL
34AC8866

RoHS

Each
1+
$369.750
5+
$339.420
10+
$309.090
25+
$290.370
Min: 1 / Mult: 1
350 Series
-
SPDT
15A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
5W
380VAC
480VAC
CSA, UL
72Y1060

RoHS

Each
1+
$214.300
5+
$199.810
10+
$193.620
25+
$187.010
50+
$178.340
Min: 1 / Mult: 1
K8AK Series
-
SPDT
5A
DIN Rail
Screw
-
-
240VAC
-
3 Phase
-
-
-
-
66AH6835

RoHS

Each
1+
$216.480
Min: 1 / Mult: 1
Harmony RM22UA Series
-
DPDT
8A
DIN Rail
Screw
-
250VAC
415VAC
-
1 Phase
8VA
15V
500VAC
-
34AH3021

RoHS

Each
1+
$469.170
5+
$458.120
10+
$447.070
25+
$424.980
Min: 1 / Mult: 1
CM Series
-
DPDT
4A
DIN Rail
Screwless
-
230VAC
170VAC
-
3 Phase
-
90VAC
170VAC
-
72Y1061

RoHS

Each
1+
$214.300
5+
$199.810
10+
$193.620
25+
$187.010
50+
$178.340
Min: 1 / Mult: 1
K8AK Series
-
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
-
58T0811

RoHS

Each
1+
$219.080
Min: 1 / Mult: 1
M3US Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
1.8VA
-
-
-
16C3179

RoHS

Each
5+
$131.850
10+
$128.030
25+
$124.210
Min: 5 / Mult: 5
DPB01 Series
-
SPDT
8A
DIN Rail
Screw
-
250VAC
240VAC
-
3 Phase
13VA
177VAC
275VAC
-
16C3181

RoHS

Each
1+
$349.890
Min: 5 / Mult: 1
DPB02 Series
-
SPDT
8A
DIN Rail
Screw
-
250VAC
240VAC
-
3 Phase
13VA
177VAC
275VAC
-
28C3540
Each
1+
$154.590
Min: 5 / Mult: 5
WRA Series
-
SPDT
10A
Socket
Quick Connect
-
250VAC
220VAC
-
3 Phase
3VA
-
-
-
01J1748
Each
1+
$2,111.920
Min: 5 / Mult: 5
1800 Series
-
SPST-NO
5A
Panel Mount
Screw
-
120VAC
120VAC
-
3 Phase
-
-
-
CSA, UL
34AC8680

RoHS

Each
1+
$407.380
5+
$374.150
10+
$340.930
25+
$320.480
Min: 1 / Mult: 1
PumpSaver Series
-
SPST
-
Panel Mount
Screw
-
240VAC
230VAC
-
1 Phase
5W
-
230VAC
UL
34AC8867

RoHS

Each
1+
$369.750
5+
$339.420
10+
$309.090
25+
$290.370
Min: 1 / Mult: 1
350 Series
-
SPDT
15A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
5W
380VAC
480VAC
CSA, UL
72Y1058

RoHS

Each
1+
$205.730
5+
$191.820
10+
$185.880
25+
$179.530
50+
$171.200
Min: 1 / Mult: 1
K8AK Series
-
SPDT
5A
DIN Rail
Screw
-
-
240VAC
-
3 Phase
-
-
-
-
34AC8574

RoHS

Each
1+
$278.190
5+
$255.040
10+
$231.900
25+
$217.450
Min: 1 / Mult: 1
102A Series
-
SPDT
10A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
5W
190VAC
480VAC
CSA, UL
23AH3159

RoHS

Each
1+
$450.810
5+
$436.500
10+
$416.790
25+
$397.020
50+
$345.950
Min: 1 / Mult: 1
EMR6 Series
-
DPDT
4A
DIN Rail
Screw
-
250VAC
580VAC
-
3 Phase
41VA
350VAC
580VAC
-
58T0810

RoHS

Each
1+
$239.520
Min: 1 / Mult: 1
H3US Series
-
DPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
2.9VA
-
-
-
68W6979

RoHS

Each
1+
$126.220
10+
$120.290
25+
$114.350
50+
$108.430
100+
$102.500
Min: 1 / Mult: 1
70 Series
-
SPDT
10A
DIN Rail, Panel
Screw
-
250VAC
240VAC
-
1 Phase
2.6VA
220VAC
240VAC
-
34AC8902

RoHS

Each
1+
$170.060
5+
$155.620
10+
$141.170
25+
$131.990
50+
$125.930
Min: 1 / Mult: 1
460 Series
-
SPDT
10A
DIN Rail, Panel
Screw
-
240VAC
480VAC
-
3 Phase
6W
190VAC
480VAC
UL
55AC7355
Each
1+
$164.280
Min: 1 / Mult: 1
-
-
SPDT
5A
DIN Rail
Screw
-
250VAC
-
-
3 Phase
30VA
280VAC
520VAC
-
23AH3168

RoHS

Each
1+
$271.450
5+
$262.840
10+
$250.960
25+
$239.070
50+
$208.310
Min: 1 / Mult: 1
EMR6 Series
-
DPDT
4A
DIN Rail
Screw
-
250VAC
400VAC
-
3 Phase
18VA
360VAC
440VAC
-
101-125 of 134 items
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