Phase Monitoring Relays:

169 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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34AH3021

RoHS

Each
1+
$609.770
5+
$595.150
10+
$580.520
25+
$551.280
Min: 1 / Mult: 1
CM
-
DPDT
4A
DIN Rail
Screwless
-
230VAC
170VAC
-
3 Phase
-
90VAC
170VAC
-
09P6659

RoHS

Each
Pricing is unavailable. Please contact customer services.
-
-
SPDT
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
22VA
183VAC
528VAC
-
91Y2600

RoHS

Each
1+
$403.830
5+
$375.800
10+
$353.360
25+
$329.050
50+
$310.360
More Pricing...
Min: 1 / Mult: 1
K8DT-PM Series
-
SPDT
-
DIN Rail
Screw
-
-
480VAC
-
3 Phase
2.7VA
-
-
UL
09P6661

RoHS

Each
Pricing is unavailable. Please contact customer services.
Zelio RM17UB3 Series
-
SPDT
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
22VA
183VAC
528VAC
-
58T0811

RoHS

Each
1+
$257.700
Min: 1 / Mult: 1
M3US Series
-
SPDT
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
1.8VA
-
-
-
16C3179

RoHS

Each
5+
$157.140
10+
$152.180
25+
$147.220
Min: 5 / Mult: 5
DPB01 Series
-
SPDT
8A
DIN Rail
Screw
-
250V
240VAC
-
3 Phase
13VA
177VAC
275VAC
-
91Y2601

RoHS

Each
1+
$389.780
5+
$362.710
10+
$341.050
25+
$317.600
50+
$299.560
More Pricing...
Min: 1 / Mult: 1
K8DT-PM Series
-
SPST-NO
-
DIN Rail
Screw
-
-
480VAC
-
3 Phase
2.7VA
-
-
UL
16C3181

RoHS

Each
1+
$454.530
Min: 5 / Mult: 1
DPB02 Series
-
SPDT
8A
DIN Rail
Screw
-
250V
240VAC
-
3 Phase
13VA
177VAC
275VAC
-
28C3540
Each
1+
$204.640
Min: 5 / Mult: 5
WRA Series
-
SPDT
10A
Socket
Quick Connect
-
250V
220VAC
-
3 Phase
3VA
-
-
-
34AC8680

RoHS

Each
1+
$586.270
5+
$547.630
10+
$509.000
25+
$480.720
Min: 1 / Mult: 1
PumpSaver Series
-
SPST
-
Panel Mount
Screw
-
240VAC
230VAC
-
1 Phase
5W
-
230VAC
UL
01J1748
Each
1+
$2,653.140
Min: 5 / Mult: 5
WILMAR 1800 Series
-
SPST-NO
5A
Panel Mount
Screw
-
120VAC
120VAC
-
3 Phase
-
-
-
CSA, UL
91Y2599

RoHS

Each
1+
$403.830
5+
$375.800
10+
$353.360
25+
$329.050
50+
$310.360
More Pricing...
Min: 1 / Mult: 1
K8DT-PM Series
-
SPST-NO
5A
DIN Rail
Screw
-
250V
240VAC
-
3 Phase
1.7VA
200VAC
240VAC
UL
91Y2596

RoHS

Each
1+
$165.890
5+
$158.210
10+
$154.360
25+
$138.240
50+
$127.490
More Pricing...
Min: 1 / Mult: 1
K8DT-PH Series
-
SPDT
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
2.6VA
200VAC
480VAC
UL
34AC8867

RoHS

Each
1+
$529.600
5+
$494.720
10+
$459.830
25+
$434.280
Min: 1 / Mult: 1
350 Series
-
SPDT
15A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
5W
380VAC
480VAC
CSA, UL
34AC8574

RoHS

Each
1+
$392.910
5+
$367.070
10+
$341.230
25+
$322.290
Min: 1 / Mult: 1
102A Series
-
SPDT
10A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
5W
190VAC
480VAC
CSA, UL
23AH3159

RoHS

Each
1+
$577.420
5+
$558.660
10+
$532.790
25+
$506.850
50+
$439.860
Min: 1 / Mult: 1
EMR6
-
DPDT
4A
DIN Rail
Screw
-
250V
580VAC
-
3 Phase
41VA
350VAC
580VAC
-
88F1055
Each
1+
$162.480
Min: 20 / Mult: 20
WRS Series
-
SPDT
10A
Socket
Quick Connect
-
250V
220VAC
-
3 Phase
3VA
-
-
-
86K0447

RoHS

Each
1+
$289.810
Min: 1 / Mult: 1
H3USN Series
-
DPDT
5A
DIN Rail
Screw
-
250V
277VAC
-
3 Phase
3.9VA
-
-
-
27R0590

RoHS

Each
1+
$244.800
10+
$233.070
50+
$230.130
100+
$222.810
Min: 5 / Mult: 5
DPA55 Series
-
SPDT
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
18VA
177VAC
550VAC
-
27R0593
Each
1+
$330.230
10+
$306.640
25+
$295.750
50+
$284.870
100+
$272.170
Min: 3 / Mult: 3
DPC01 Series
-
2 x SPDT
5A
DIN Rail
Screw
-
24VDC
480VAC
-
3 Phase
-
374VAC
552VAC
-
27R0594

RoHS

Each
5+
$267.540
10+
$256.120
25+
$247.970
Min: 5 / Mult: 5
DPC71 Series
-
SPDT
5A
DIN Rail
Screw
-
250V
240VAC
-
3 Phase
6VA
177VAC
275VAC
-
71K2995

RoHS

Each
1+
$303.010
10+
$288.500
50+
$284.870
100+
$275.790
Min: 3 / Mult: 3
DPC01 Series
-
2 x SPDT
8A
DIN Rail
Screw
-
250V
240VAC
-
3 Phase
2.5VA
177VAC
276V
-
16C5107

RoHS

Each
1+
$587.970
Min: 3 / Mult: 1
PPC01 Series
-
SPDT
8A
Socket
Quick Connect
-
250V
240VAC
-
3 Phase
9VA
177VAC
275VAC
-
58T0810

RoHS

Each
1+
$281.740
Min: 1 / Mult: 1
H3US Series
-
DPDT
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
2.9VA
-
-
-
08X7279

RoHS

Each
1+
$130.690
5+
$118.540
10+
$117.320
25+
$114.290
50+
$106.380
More Pricing...
Min: 1 / Mult: 1
70 Series
-
SPDT
6A
DIN Rail
Screw
-
480V
480VAC
-
3 Phase
1W
208VAC
480VAC
-
126-150 of 169 items
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