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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4163403

RoHS

Each
1+
$88.000
($101.200)
5+
$84.490
($97.1635)
10+
$82.840
($95.266)
20+
$81.230
($93.4145)
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
4163398

RoHS

Each
1+
$128.690
($147.9935)
5+
$123.540
($142.071)
10+
$121.110
($139.2765)
20+
$118.800
($136.620)
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
16VA
208VAC
480VAC
4163402

RoHS

Each
1+
$83.190
($95.6685)
5+
$79.870
($91.8505)
10+
$78.300
($90.045)
20+
$76.800
($88.320)
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
Screw
-
250VAC
415VAC
-
3 Phase
15VA
-
415VAC
4163395

RoHS

Each
1+
$134.550
($154.7325)
5+
$129.170
($148.5455)
10+
$126.650
($145.6475)
20+
$124.200
($142.830)
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
Screw
-
240VAC
500VAC
-
3 Phase
5VA
145VAC
500VAC
1344233

RoHS

Each
1+
$158.040
($181.746)
5+
$144.410
($166.0715)
10+
$130.770
($150.3855)
Min: 1 / Mult: 1
70 Series
SPDT
6A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
1W
208VAC
480VAC
2455513

RoHS

Each
1+
$264.880
($304.612)
5+
$259.590
($298.5285)
10+
$254.290
($292.4335)
Min: 1 / Mult: 1
Zelio
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
-
-
2295793

RoHS

Each
1+
$242.680
($279.082)
5+
$234.400
($269.560)
10+
$229.720
($264.178)
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
Screw
-
250VAC
415VAC
-
3 Phase
11VA
380VAC
415VAC
1895998

RoHS

Each
1+
$288.030
($331.2345)
5+
$282.270
($324.6105)
10+
$276.510
($317.9865)
Min: 1 / Mult: 1
CM-PFE
SPDT
4A
DIN Rail
Screw
-
250VAC
440VAC
-
3 Phase
15VA
208VAC
440VAC
4259624
Each
1+
$313.110
($360.0765)
Min: 1 / Mult: 1
-
SPDT
10A
Socket
Plug In
-
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
2507215

RoHS

Each
1+
$393.650
($452.6975)
Min: 1 / Mult: 1
K8AK
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
2507225

RoHS

Each
1+
$195.150
($224.4225)
5+
$191.250
($219.9375)
10+
$187.350
($215.4525)
Min: 1 / Mult: 1
K8DS
SPDT
5A
DIN Rail
Screw
-
-
480VAC
-
3 Phase
-
-
-
4163401

RoHS

Each
1+
$109.000
($125.350)
5+
$94.200
($108.330)
10+
$92.360
($106.214)
20+
$90.570
($104.1555)
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
3VA
208VAC
480VAC
4377819

RoHS

Each
1+
$177.520
($204.148)
Min: 1 / Mult: 1
DPA51 Series
SPDT
5A
DIN Rail
Screw
-
24VDC
480VAC
-
3 Phase
13VA
177VAC
552VAC
4236649

RoHS

Each
1+
$201.230
($231.4145)
5+
$197.210
($226.7915)
10+
$193.180
($222.157)
Min: 1 / Mult: 1
MWS Series
SPDT
8A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
183V
528V
4300430

RoHS

Each
1+
$332.230
($382.0645)
Min: 1 / Mult: 1
PPB01 Series
SPDT
8A
Socket
Plug In
-
250VAC
-
-
3 Phase
2.5VA
380VAC
480VAC
4300429

RoHS

Each
1+
$240.750
($276.8625)
5+
$222.920
($256.358)
10+
$218.470
($251.2405)
Min: 1 / Mult: 1
DPB51 Series
SPDT
5A
DIN Rail, Panel
Screw
-
250VAC
-
-
3 Phase
13VA
208VAC
480VAC
4163399

RoHS

Each
1+
$97.190
($111.7685)
5+
$83.990
($96.5885)
10+
$82.330
($94.6795)
20+
$80.740
($92.851)
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
3.5VA
208VAC
480VAC
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+
$107.850
($124.0275)
Min: 1 / Mult: 1
70 Series
SPDT
6A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
1W
208VAC
480VAC
4259621
Each
1+
$213.850
($245.9275)
Min: 1 / Mult: 1
-
SPDT
5A
DIN Rail
Screw
-
250VAC
230VAC
-
3 Phase
8VA
170VAC
290VAC
4259625
Each
1+
$274.140
($315.261)
Min: 1 / Mult: 1
-
SPDT
10A
Socket
Plug In
-
240VAC
-
-
3 Phase
90VA
200VAC
430VAC
2811545

RoHS

Each
1+
$122.210
($140.5415)
5+
$121.400
($139.610)
10+
$120.580
($138.667)
20+
$118.170
($135.8955)
Min: 1 / Mult: 1
SM 301 Series
SPDT
5A
DIN Rail
Screw
250V
250VAC
415VAC
28V
3 Phase
15VA
-
415VAC
2780436

RoHS

Each
1+
$291.150
($334.8225)
5+
$280.970
($323.1155)
10+
$275.360
($316.664)
Min: 1 / Mult: 1
Zelio RM17UBE
SPDT
5A
DIN Rail
Screw
-
250VAC
48V
-
1 Phase
3.9VA
20V
80V
2295791

RoHS

Each
1+
$192.250
($221.0875)
5+
$175.880
($202.262)
10+
$172.370
($198.2255)
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
Screw
-
250VAC
240VAC
-
1 Phase
2.6VA
220VAC
240VAC
2102326

RoHS

Each
1+
$282.900
($325.335)
5+
$277.250
($318.8375)
10+
$271.590
($312.3285)
Min: 1 / Mult: 1
CM-PFS.S
SPDT
-
DIN Rail
Screw
-
24VDC
500VAC
-
3 Phase
-
200VAC
500VAC
2780435

RoHS

Each
1+
$391.980
($450.777)
Min: 1 / Mult: 1
Zelio RM17UB3
SPDT
5A
DIN Rail
Screw
-
250VAC
480VAC
-
3 Phase
22VA
183V
528V
1-25 of 39 items
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