Monitoring Relays:

465 Products Found

Farnell offers a comprehensive range of monitoring relays, ideal for safeguarding electrical systems and ensuring optimal performance. Our selection includes current, ground fault, insulation, phase and temperature monitoring relays from leading manufacturers. Designed to enhance safety and efficiency, these relays are available in various configurations for industrial and commercial applications.

Monitoring relays are protective devices that monitor key electrical parameters such as current, voltage, phase sequence, insulation resistance and temperature. They detect anomalies and trigger alerts or corrective actions to prevent equipment damage and system failure. These relays play a vital role in protecting motors, generators and other critical electrical equipment.

Current Monitoring Relays – Detect overcurrent, undercurrent and phase imbalance to protect motors and equipment. Ground Fault Monitoring Relays – Identify leakage currents to prevent electrical hazards and improve safety. Insulation Monitoring Relays – Measure insulation resistance to detect faults before they cause failure. Phase Monitoring Relays – Monitor phase sequence, loss and imbalance to ensure stable operation. Temperature Monitoring Relays – Detect overheating and activate cooling or shutdown systems.

Applications:

  • Industrial Automation – Protect motors and equipment from electrical faults.
  • HVAC Systems – Ensure efficient operation and prevent overheating.
  • Power Distribution – Maintain system stability and prevent blackouts.
  • Renewable Energy – Monitor electrical health in solar and wind systems.
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ComparePrice ForQuantity
4163403

RoHS

Each
1+
kr 339.140
5+
kr 325.550
10+
kr 319.120
20+
kr 313.070
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
4163411

RoHS

Each
1+
kr 510.130
5+
kr 489.740
10+
kr 480.100
20+
kr 470.910
Min: 1 / Mult: 1
MP Temperature Control Relays
DPDT
5A
DIN Rail
4163419

RoHS

Each
1+
kr 708.390
5+
kr 680.080
10+
kr 666.710
20+
kr 653.860
Min: 1 / Mult: 1
MP Temperature Control Relays
SPDT
10A
DIN Rail
4163398

RoHS

Each
1+
kr 503.850
5+
kr 483.700
10+
kr 474.220
20+
kr 465.040
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
4163402

RoHS

Each
1+
kr 320.540
5+
kr 307.690
10+
kr 301.640
20+
kr 295.890
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
4163410

RoHS

Each
1+
kr 510.130
5+
kr 489.740
10+
kr 480.100
20+
kr 470.910
Min: 1 / Mult: 1
MP Temperature Control Relays
DPDT
5A
DIN Rail
4163395

RoHS

Each
1+
kr 526.760
5+
kr 505.710
10+
kr 495.790
20+
kr 486.240
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
SPDT
5A
DIN Rail
4163407

RoHS

Each
1+
kr 459.860
5+
kr 441.410
10+
kr 432.820
20+
kr 424.450
Min: 1 / Mult: 1
MP Voltage Monitoring Relays
DPDT
5A
DIN Rail
4163413

RoHS

Each
1+
kr 496.540
5+
kr 476.670
10+
kr 467.330
20+
kr 458.290
Min: 1 / Mult: 1
MP Temperature Control Relays
SPST-NO, SPST-NO
5A
DIN Rail
4259624
Each
1+
kr 1,622.000
Min: 1 / Mult: 1
-
SPDT
10A
Socket
1824777

RoHS

Each
1+
kr 475.700
5+
kr 403.310
10+
kr 395.240
Min: 1 / Mult: 1
DIA53
SPST-NO
100mA
DIN Rail
2295793

RoHS

Each
1+
kr 913.740
5+
kr 895.440
10+
kr 877.210
Min: 1 / Mult: 1
70 Series
SPDT
10A
DIN Rail, Panel
4319898

RoHS

Each
1+
kr 1,723.000
Min: 1 / Mult: 1
SIRIUS 3UG4 Series
SPDT
3A
DIN Rail
2056305

RoHS

Each
1+
kr 1,483.150
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
2056304

RoHS

Each
1+
kr 672.960
5+
kr 659.520
10+
kr 646.070
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
1344233

RoHS

Each
1+
kr 520.890
5+
kr 510.510
10+
kr 500.050
Min: 1 / Mult: 1
70 Series
SPDT
6A
DIN Rail
2056347

RoHS

Each
1+
kr 1,027.000
Min: 1 / Mult: 1
Zelio
DPDT
5A
DIN Rail
1895998

RoHS

Each
1+
kr 781.160
5+
kr 765.540
10+
kr 749.920
Min: 1 / Mult: 1
CM-PFE
SPDT
4A
DIN Rail
9515399

RoHS

Each
1+
kr 1,126.000
5+
kr 954.860
10+
kr 935.760
Min: 1 / Mult: 1
MK 9056
DPDT
-
DIN Rail
2507225

RoHS

Each
1+
kr 544.830
5+
kr 533.940
10+
kr 523.050
Min: 1 / Mult: 1
K8DS
SPDT
5A
DIN Rail
2507215

RoHS

Each
1+
kr 1,252.000
Min: 1 / Mult: 1
K8AK
SPDT
5A
DIN Rail
2455513

RoHS

Each
1+
kr 652.790
5+
kr 639.720
10+
kr 626.650
Min: 1 / Mult: 1
Zelio
SPDT
5A
DIN Rail
2780443

RoHS

Each
1+
kr 1,438.430
Min: 1 / Mult: 1
Zelio RM35UB3
DPDT
5A
DIN Rail
2612119

RoHS

Each
1+
kr 940.790
Min: 1 / Mult: 1
K8AK-TH Series
SPDT
5A
DIN Rail
2835320

RoHS

Each
1+
kr 1,155.210
Min: 1 / Mult: 1
Zelio RM22UA
DPDT
8A
DIN Rail
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