Phase Monitoring Relays:

101 Products Found

Element14 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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3922060

RoHS

Each
1+
$260.790
($299.9085)
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT-CO
8A
DIN Rail
Screw
-
250VAC
576VAC
-
3 Phase
4VA
208VAC
480VAC
2507215

RoHS

Each
1+
$397.290
($456.8835)
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
2504231

RoHS

Each
1+
$128.760
($148.074)
Min: 1 / Mult: 1
K8AK Series
DPDT-NC
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
-
200VAC
480VAC
2507225

RoHS

Each
1+
$206.830
($237.8545)
5+
$202.700
($233.105)
10+
$198.550
($228.3325)
Min: 1 / Mult: 1
K8DS Series
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
3111269

RoHS

Each
1+
$296.880
($341.412)
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
Screw
-
250VAC
240VAC
-
3 Phase
10VA
200VAC
240VAC
9514430

RoHS

Each
1+
$1,479.000
($1,700.850)
Min: 1 / Mult: 1
BD 9080 Series
DPDT
-
DIN Rail
Screw
-
230VAC
400VAC
-
3 Phase
2.4VA
-
-
9515399

RoHS

Each
1+
$274.640
($315.836)
5+
$274.390
($315.5485)
10+
$265.180
($304.957)
Min: 1 / Mult: 1
-
DPDT
-
DIN Rail
Screw
-
230VAC
500VAC
-
3 Phase
-
-
-
3214139

RoHS

Each
1+
$804.770
($925.4855)
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
Screw
-
250VAC
500VAC
-
3 Phase
18VA
300VAC
500VAC
205630402

RoHS

Each
1+
$205.120
($235.888)
Min: 1 / Mult: 1
Harmony RM17 Series
DPDT
5A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
22VA
183V
484V
205630401

RoHS

Each
1+
$239.310
($275.2065)
Min: 1 / Mult: 1
Harmony RM17 Series
DPDT
5A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
22VA
183V
484V
189599801

RoHS

Each
1+
$203.480
($234.002)
Min: 1 / Mult: 1
CM-PFE Series
SPDT
4A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
15VA
208VAC
440VAC
9515046

RoHS

Each
1+
$214.560
($246.744)
5+
$210.270
($241.8105)
10+
$205.980
($236.877)
Min: 1 / Mult: 1
-
SPST-NC
-
DIN Rail
Screw
-
230VAC
400VAC
-
3 Phase
-
-
-
437781901

RoHS

Each
1+
$169.660
($195.109)
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
437781902

RoHS

Each
1+
$169.400
($194.810)
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
4377819

RoHS

Each
1+
$178.310
($205.0565)
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
Screw
-
24VDC
480VAC
-
3 Phase
13VA
177VAC
552VAC
4236649

RoHS

Each
1+
$203.090
($233.5535)
5+
$199.030
($228.8845)
10+
$194.970
($224.2155)
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
183V
528V
4300430

RoHS

Each
1+
$317.830
($365.5045)
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
Plug In
-
250VAC
-
-
3 Phase
2.5VA
380VAC
480VAC
430043002

RoHS

Each
1+
$268.250
($308.4875)
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
4300429

RoHS

Each
1+
$242.980
($279.427)
5+
$224.990
($258.7385)
10+
$220.500
($253.575)
Min: 1 / Mult: 1
DPB51 Series
SPDT
5A
DIN Rail, Panel
Screw
-
250VAC
-
-
3 Phase
13VA
208VAC
480VAC
229579302

RoHS

Each
1+
$179.220
($206.103)
Min: 1 / Mult: 1
-
-
10A
-
-
-
250VAC
415VAC
-
-
11VA
380VAC
415VAC
134423302

RoHS

Date/Lot Code

Each
Hazardous Item: There maybe additional transit time on this item. Delivery of other items on your order will be unaffected.
1+
$108.850
($125.1775)
Min: 1 / Mult: 1
70 Series
SPDT
6A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
1W
208VAC
480VAC
4259621
Each
1+
$215.830
($248.2045)
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
230VAC
-
3 Phase
8VA
170VAC
290VAC
4259625
Each
1+
$275.370
($316.6755)
Min: 1 / Mult: 1
SLU Series
SPDT
10A
Socket
Plug In
-
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
1390500

RoHS

Each
1+
$458.800
($527.620)
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
SPST-NC
-
DIN Rail
Screw
-
-
500VAC
-
3 Phase
2W
320VAC
500VAC
2811545

RoHS

Each
1+
$123.340
($141.841)
5+
$122.530
($140.9095)
10+
$121.700
($139.955)
20+
$119.270
($137.1605)
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
250V
250VAC
415VAC
28V
3 Phase
15VA
-
415VAC
26-50 of 101 items
of 5 page(s)

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