Phase Monitoring Relays:

129 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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34AC8866

RoHS

Each
1+
$407.100
5+
$380.290
10+
$353.470
25+
$333.830
Min: 1 / Mult: 1
350 Series
-
SPDT
15A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
5W
380VAC
480VAC
CSA, UL
66Y0844

RoHS

Each
1+
$566.420
5+
$552.260
10+
$538.100
25+
$509.770
Min: 1 / Mult: 1
-
-
DPDT
4A
DIN Rail
Screw
-
24V
580VAC
-
3 Phase
-
350VAC
580VAC
CSA, IEC, UL
66AH6835

RoHS

Each
1+
$217.900
Min: 1 / Mult: 1
Zelio RM22UA
-
DPDT
8A
DIN Rail
Screw
-
250VAC
415VAC
-
1 Phase
8VA
15V
500V
-
34AH3021

RoHS

Each
1+
$427.490
5+
$417.260
10+
$407.040
25+
$386.570
Min: 1 / Mult: 1
CM
-
DPDT
4A
DIN Rail
Screwless
-
230VAC
170VAC
-
3 Phase
-
90VAC
170VAC
-
58T0811

RoHS

Each
1+
$194.660
Min: 1 / Mult: 1
M3US Series
-
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
1.8VA
-
-
-
16C3179

RoHS

Each
5+
$120.970
10+
$117.150
25+
$113.330
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
-
-
-
34AC8680

RoHS

Each
1+
$450.660
5+
$420.960
10+
$391.260
25+
$369.530
Min: 1 / Mult: 1
PumpSaver Series
-
SPST
-
Panel Mount
Screw
-
240VAC
230VAC
-
1 Phase
5W
-
230VAC
UL
01J1748
Each
1+
$1,891.280
Min: 5 / Mult: 5
WILMAR 1800 Series
-
SPST-NO
5A
Panel Mount
Screw
-
120VAC
120VAC
-
3 Phase
-
-
-
CSA, UL
34AC8867

RoHS

Each
1+
$407.100
5+
$380.290
10+
$353.470
25+
$333.830
Min: 1 / Mult: 1
350 Series
-
SPDT
15A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
5W
380VAC
480VAC
CSA, UL
34AC8574

RoHS

Each
1+
$302.030
5+
$282.170
10+
$262.300
25+
$247.750
Min: 1 / Mult: 1
102A Series
-
SPDT
10A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
5W
190VAC
480VAC
CSA, UL
23AH3159

RoHS

Each
1+
$434.760
5+
$420.630
10+
$401.160
25+
$381.630
50+
$331.180
Min: 1 / Mult: 1
EMR6
-
DPDT
4A
DIN Rail
Screw
-
250VAC
580VAC
-
3 Phase
41VA
350VAC
580VAC
-
88F1055
Each
1+
$122.740
Min: 20 / Mult: 20
WRS Series
-
SPDT
10A
Socket
Quick Connect
-
250VAC
220VAC
-
3 Phase
3VA
-
-
-
58T0810

RoHS

Each
1+
$212.830
Min: 1 / Mult: 1
H3US Series
-
DPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
2.9VA
-
-
-
68W6979

RoHS

Each
1+
$118.420
10+
$112.750
25+
$107.090
50+
$101.430
100+
$95.760
Min: 1 / Mult: 1
70 Series
-
SPDT
10A
DIN Rail, Panel
Screw
-
250VAC
240VAC
-
1 Phase
2.6VA
220VAC
240VAC
-
34AC8902

RoHS

Each
1+
$180.140
5+
$168.330
10+
$156.510
25+
$147.860
50+
$141.570
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+
$261.790
5+
$253.290
10+
$241.560
25+
$229.800
50+
$199.420
Min: 1 / Mult: 1
EMR6
-
DPDT
4A
DIN Rail
Screw
-
250VAC
400VAC
-
3 Phase
18VA
360VAC
440VAC
-
34AH3017

RoHS

Each
1+
$183.640
10+
$174.830
25+
$166.010
50+
$157.200
100+
$148.380
Min: 1 / Mult: 1
CM
-
DPDT
4A
DIN Rail
Screwless
-
230VAC
500VAC
-
3 Phase
-
200VAC
500V
-
92AH2394

RoHS

Each
1+
$280.390
5+
$250.380
10+
$232.460
25+
$202.290
50+
$181.850
More Pricing...
Min: 2 / Mult: 1
-
-
SPDT
5A
DIN Rail
Screw
-
250VAC
-
-
3 Phase
1.5W
187VAC
528VAC
-
34AH3022

RoHS

Each
1+
$435.660
5+
$425.230
10+
$414.800
25+
$393.920
Min: 1 / Mult: 1
CM
-
DPDT
4A
DIN Rail
Screwless
-
230VAC
280VAC
-
3 Phase
-
180VAC
280VAC
-
44AC2546

RoHS

Each
1+
$54.330
5+
$49.290
10+
$47.850
25+
$46.900
50+
$44.630
More Pricing...
Min: 1 / Mult: 1
SM 301 Series
-
SPDT
5A
DIN Rail
Screw
250V
250VAC
415VAC
28V
3 Phase
15VA
-
415VAC
-
53R1959

RoHS

Each
1+
$113.250
10+
$103.370
25+
$101.960
50+
$99.450
100+
$92.960
More Pricing...
Min: 1 / Mult: 1
IK 9179
-
SPST-NC
-
DIN Rail
Screw
-
230VAC
400VAC
-
3 Phase
-
-
-
-
42M1919

RoHS

Each
1+
$118.640
10+
$108.290
25+
$106.810
50+
$104.190
100+
$97.390
More Pricing...
Min: 1 / Mult: 1
IK 9169
-
SPST-NC
-
DIN Rail
Screw
-
-
415VAC
-
3 Phase
-
-
-
-
101-125 of 129 items
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