Phase Monitoring Relays:

97 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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2780443

RoHS

Each
1+
$530.330
($609.8795)
Min: 1 / Mult: 1
Harmony RM35UB3 Series
DPDT
5A
DIN Rail
Screw
-
250V
277VAC
-
3 Phase
3.9VA
114VAC
329VAC
2507215

RoHS

Each
1+
$408.230
($469.4645)
Min: 1 / Mult: 1
K8AK Series
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
2504231

RoHS

Each
1+
$129.140
($148.511)
Min: 1 / Mult: 1
K8AK Series
DPDT-NC
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
-
200VAC
480VAC
2507225

RoHS

Each
1+
$191.270
($219.9605)
5+
$187.440
($215.556)
10+
$183.610
($211.1515)
Min: 1 / Mult: 1
K8DS Series
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
3111269

RoHS

Each
1+
$305.050
($350.8075)
Min: 1 / Mult: 1
Harmony RM22 Series
DPDT
8A
DIN Rail
Screw
-
250V
240VAC
-
3 Phase
10VA
200VAC
240VAC
9514430

RoHS

Each
1+
$1,322.920
($1,521.358)
Min: 1 / Mult: 1
BD 9080 Series
DPDT
-
DIN Rail
Screw
-
230VAC
400VAC
-
3 Phase
2.4VA
-
-
9515399

RoHS

Each
1+
$272.130
($312.9495)
5+
$263.800
($303.370)
10+
$258.810
($297.6315)
Min: 1 / Mult: 1
-
DPDT
-
DIN Rail
Screw
-
230VAC
500VAC
-
3 Phase
-
-
-
3214139

RoHS

Each
1+
$826.920
($950.958)
Min: 1 / Mult: 1
EMR6 Series
DPDT
4A
DIN Rail
Screw
-
250V
500VAC
-
3 Phase
18VA
300VAC
500VAC
205630401

RoHS

Each
1+
$245.900
($282.785)
Min: 1 / Mult: 1
Harmony RM17 Series
DPDT
5A
DIN Rail
Screw
-
250V
440VAC
-
3 Phase
22VA
183V
484V
189599801

RoHS

Each
1+
$209.080
($240.442)
Min: 1 / Mult: 1
CM-PFE Series
SPDT
4A
DIN Rail
Screw
-
250V
440VAC
-
3 Phase
15VA
208VAC
440VAC
9515046

RoHS

Each
1+
$200.300
($230.345)
5+
$196.300
($225.745)
10+
$192.290
($221.1335)
Min: 1 / Mult: 1
-
SPST-NC
-
DIN Rail
Screw
-
230VAC
400VAC
-
3 Phase
-
-
-
4377819

RoHS

Each
1+
$229.200
($263.580)
5+
$200.550
($230.6325)
10+
$186.000
($213.900)
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
Screw
-
24VDC
480VAC
-
3 Phase
13VA
177VAC
552VAC
4236649

RoHS

Each
1+
$208.680
($239.982)
5+
$204.510
($235.1865)
10+
$200.330
($230.3795)
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
22VA
183V
528V
4300430

RoHS

Each
1+
$326.580
($375.567)
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
Plug In
-
250V
-
-
3 Phase
2.5VA
380VAC
480VAC
4300429

RoHS

Each
1+
$249.670
($287.1205)
5+
$231.180
($265.857)
10+
$226.560
($260.544)
Min: 1 / Mult: 1
DPB51 Series
SPDT
5A
DIN Rail, Panel
Screw
-
250V
-
-
3 Phase
13VA
208VAC
480VAC
437781901

RoHS

Each
1+
$174.330
($200.4795)
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
4259621
Each
1+
$221.770
($255.0355)
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250V
230VAC
-
3 Phase
8VA
170VAC
290VAC
4259625
Each
1+
$276.170
($317.5955)
Min: 1 / Mult: 1
SLU Series
SPDT
10A
Socket
Plug In
-
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
1390500

RoHS

Each
1+
$500.770
($575.8855)
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
SPST-NC
-
DIN Rail
Screw
-
-
500VAC
-
3 Phase
2W
320VAC
500VAC
2811545

RoHS

Each
1+
$126.740
($145.751)
5+
$125.900
($144.785)
10+
$125.050
($143.8075)
20+
$122.550
($140.9325)
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
250V
250V
415VAC
28V
3 Phase
15VA
-
415VAC
2780436

RoHS

Each
1+
$311.540
($358.271)
5+
$285.380
($328.187)
10+
$259.200
($298.080)
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
Screw
-
250V
48V
-
1 Phase
3.9VA
20V
80V
2295791

RoHS

Each
1+
$205.770
($236.6355)
5+
$181.220
($208.403)
10+
$177.600
($204.240)
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
Screw
-
250V
240VAC
-
1 Phase
2.6VA
220VAC
240VAC
3050817

RoHS

Each
1+
$186.330
($214.2795)
5+
$182.620
($210.013)
10+
$178.890
($205.7235)
Min: 1 / Mult: 1
70 Series
DPDT
8A
DIN Rail, Panel
Screw
-
400VAC
480VAC
-
3 Phase
800mW
170VAC
520VAC
2102326

RoHS

Each
1+
$293.370
($337.3755)
5+
$287.520
($330.648)
10+
$281.650
($323.8975)
Min: 1 / Mult: 1
CM Series
SPDT
-
DIN Rail
Screw
-
24VDC
500VAC
-
3 Phase
-
200VAC
500VAC
2780435

RoHS

Each
1+
$395.520
($454.848)
Min: 1 / Mult: 1
Harmony RM17 Series
SPDT
5A
DIN Rail
Screw
-
250V
480VAC
-
3 Phase
22VA
183V
528V
26-50 of 97 items
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