Phase Monitoring Relays:

171 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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34AC3146

RoHS

Each
1+
$386.350
5+
$360.950
10+
$335.540
25+
$316.910
Min: 1 / Mult: 1
HLMU Series
-
DPDT
10A
Panel Mount
Screw
-
240VAC
480VAC
-
3 Phase
-
200VAC
480VAC
UL
34AC8664

RoHS

Each
1+
$258.630
5+
$241.660
10+
$224.700
25+
$212.240
50+
$203.240
Min: 1 / Mult: 1
201A Series
-
SPDT
10A
Socket
Quick Connect
-
240VAC
480VAC
-
3 Phase
5W
190VAC
480VAC
UL
66AH6828

RoHS

Each
1+
$286.960
Min: 1 / Mult: 1
Zelio RM17UBE
-
SPDT
5A
DIN Rail
Screw
-
250V
48V
-
1 Phase
3.9VA
20V
80V
-
70AH0684

RoHS

Each
1+
$137.450
10+
$125.450
25+
$123.740
50+
$120.680
100+
$112.820
More Pricing...
Min: 1 / Mult: 1
70 Series
-
DPDT
8A
DIN Rail, Panel
Screw
-
400VAC
480VAC
-
3 Phase
800mW
170VAC
520VAC
-
09P6658

RoHS

Each
Pricing is unavailable. Please contact customer services.
Zelio Series
-
SPDT
5A
DIN Rail
Screw
-
250V
528VAC
-
3 Phase
22VA
208VAC
480VAC
-
20J6493

RoHS

Each
1+
$360.180
5+
$337.250
10+
$314.840
25+
$285.860
50+
$259.500
More Pricing...
Min: 1 / Mult: 1
PAP Series
-
SPDT
10A
Socket
Quick Connect
-
277VAC
208VAC
-
3 Phase
40VA
156VAC
198VAC
-
34AC8670

RoHS

Each
1+
$216.800
5+
$202.580
10+
$188.380
25+
$177.950
50+
$170.390
Min: 1 / Mult: 1
202 Series
-
SPDT
10A
Socket
Quick Connect / Screw
-
240VAC
480VAC
-
3 Phase
5W
190VAC
480VAC
IEC, UL
69AC7486

RoHS

Each
1+
$141.290
5+
$128.680
10+
$119.390
25+
$112.090
50+
$105.470
More Pricing...
Min: 1 / Mult: 1
EMD
-
SPDT
5A
DIN Rail
Quick Connect
-
250V
480VAC
-
3 Phase
1.5W
187VAC
519VAC
-
12AH0513
Each
5+
$292.290
10+
$283.060
25+
$273.830
Min: 5 / Mult: 5
DPC01 Series
-
2 x SPDT
5A
DIN Rail
Screw
-
24VDC
690VAC
-
3 Phase
-
177VAC
793VAC
-
66AH6831

RoHS

Each
1+
$242.860
Min: 1 / Mult: 1
Zelio RM22TU
-
DPDT
8A
DIN Rail
Screw
-
250V
240VAC
-
3 Phase
10VA
200VAC
240VAC
-
32X6356
Each
Pricing is unavailable. Please contact customer services.
PLL/D Series
-
DPDT
8A
DIN Rail
Screw
-
30VDC
240VAC
-
1 Phase, 3 Phase (4 Wire)
1.7W
100V
139V
EN
34AC8681

RoHS

Each
1+
$691.950
5+
$646.300
10+
$600.650
Min: 1 / Mult: 1
PumpSaver Series
-
SPST
-
Panel Mount
Screw
-
240VAC
230VAC
-
1 Phase
5W
-
230VAC
UL
22AJ2357

RoHS

Date/Lot Code

Each
Pricing is unavailable. Please contact customer services.
Zelio Series
-
DPDT
8A
DIN Rail
Screw
-
250V
288VAC
-
3 Phase
10VA
200VAC
240VAC
-
40T1796

RoHS

Date/Lot Code

Each
1+
$339.590
5+
$303.250
10+
$281.530
25+
$245.010
50+
$220.240
More Pricing...
Min: 1 / Mult: 1
PMPU-FA8 Series
-
SPDT
10A
-
Quick Connect
-
277VAC
-
-
3 Phase
40VA
156VAC
550VAC
CE, UL
80K7042
Each
1+
$2,917.950
Min: 5 / Mult: 5
D101X Series
-
SPST-NO
5A
Panel Mount
Screw
-
120VAC
120VAC
-
3 Phase
2VA
-
-
CSA, UL
30C3079

RoHS

Date/Lot Code

Each
1+
$159.450
5+
$155.460
10+
$151.490
25+
$143.510
50+
$135.530
More Pricing...
Min: 1 / Mult: 1
PAP Series
-
SPDT
10A
Socket
Quick Connect
-
277VAC
240VAC
-
3 Phase
40VA
180VAC
230VAC
-
09P6662

RoHS

Each
Pricing is unavailable. Please contact customer services.
Zelio Series
-
SPDT
5A
DIN Rail
Screw
-
250V
528VAC
-
3 Phase
5W
208VAC
480VAC
-
34AH3016

RoHS

Each
1+
$533.720
5+
$520.950
10+
$508.170
25+
$482.630
Min: 1 / Mult: 1
CM
-
DPDT
4A
DIN Rail
Screwless
-
230VAC
500VAC
-
3 Phase
-
300VAC
500VAC
-
66AH6832

RoHS

Each
1+
$309.840
5+
$294.800
10+
$283.710
25+
$272.500
50+
$251.600
Min: 1 / Mult: 1
Zelio RM22UA
-
DPDT
8A
DIN Rail
Screw
-
250V
240VAC
-
1 Phase
1.5W
50mV
5V
-
16C5108

RoHS

Each
1+
$566.400
5+
$549.640
10+
$526.190
25+
$509.430
Min: 3 / Mult: 1
PPC01 Series
-
SPDT
8A
Socket
Quick Connect
-
250V
415VAC
-
3 Phase
13VA
323VAC
475VAC
-
86K0440

RoHS

Each
1+
$177.940
Min: 1 / Mult: 1
MWS2 Series
-
DPDT
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
1.8VA
183VAC
484VAC
-
47X2116

RoHS

Each
1+
$192.690
Min: 1 / Mult: 1
EWS2 Series
-
DPDT
8A
DIN Rail
Screw
-
250V
484VAC
-
-
28VA
200VAC
484VAC
-
34AC8866

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
66Y0844

RoHS

Each
1+
$735.810
5+
$717.420
10+
$699.020
25+
$662.230
Min: 1 / Mult: 1
-
-
DPDT
4A
DIN Rail
Screw
-
24VDC
580VAC
-
3 Phase
-
350VAC
580VAC
CSA, IEC, UL
66AH6835

RoHS

Each
1+
$283.470
Min: 1 / Mult: 1
Zelio RM22UA
-
DPDT
8A
DIN Rail
Screw
-
250V
415VAC
-
1 Phase
8VA
15V
500VAC
-
101-125 of 171 items
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