Signal Conditioners & Isolators

We offer three types of control relays from a range of brands including Phoenix Contact, ABB, Siemens and Omron.

If you're looking to control temperature, voltage, current or frequency, you'll find the products within monitoring relays. For all of your signal conditioning and conversion requirements, visit our signal conditioning range.

What is a control relay?

A control relay is basically an electrically operated switch.

How does a control relay work?

They work by opening and closing a switch to allow power to flow through a coil to conduct electricity. The coil does not actually come into contact with the switch during this process.

What types of control relays are available?

The three types of control relay are as follows:

  • Impulse relay - a type of latching relay that transfers the contacts with each pulse.
  • Monitoring relay - a protective control device for monitoring and receiving input signals, and outputting an alarm signal if a threshold is reached.
  • Signal conditioning - a device that converts one type of electronic signal into another type of signal.

What are the uses of a control relay panel?

Control relay panels are used for the control and monitoring of electrical equipment such as transformers, generators and circuit breakers in industrial systems and environments.

What is the function of an undervoltage control relay?

A relay will trip the breaker circuit if it detects an abnormality. An undervoltage (UV) relay will activate if the voltage is lower than a prescribed value, and stay like that until it reaches the necessary voltage.

Signal Conditioners
Signal Conditioners
Zener & Galvanic Barriers
Zener & Galvanic Barriers

979 Products showing for Signal Conditioners & Isolators

42 of 49
In Stock
Endress+Hauser 1 Channel Galvanic Barrier, Zone 2
  • RS Stock No. 288-6565
  • Mfr. Part No. RN42-8L1BO
Subtotal (1 unit)
SGD307.10(exc. GST)
In Stock
Endress+Hauser Signal Conditioner, 24V dc Supply
  • RS Stock No. 256-6212
  • Mfr. Part No. RNF22-8KB
Subtotal (1 unit)
SGD200.92(exc. GST)
Temporarily out of stock
Endress+Hauser RN22 Series Signal Conditioner
  • RS Stock No. 256-6205
  • Mfr. Part No. RN22-8L1B
Subtotal (1 unit)
SGD336.42(exc. GST)
In Stock
ZDAUTO AI Series Signal Conditioner, 3.3V Supply
  • RS Stock No. 667-752
  • Mfr. Part No. AIP03600B3
Subtotal (1 bag of 25 units)
SGD545.98(exc. GST)
Stocked by manufacturer
Siemens 3RS7002 Series Signal Conditioner, Current Input, Voltage Output, 24V ac/dc Supply
  • RS Stock No. 134-8034
  • Mfr. Part No. 3RS7002-2AE00
Subtotal (1 unit)
SGD325.01(exc. GST)
Temporarily out of stock
Weidmüller ACT20M Series Temperature Converter, Temperature Input, Current Output, 35V Supply, ATEX, IECEx
  • RS Stock No. 287-5506
  • Mfr. Part No. 1435590000
Subtotal (1 unit)
SGD297.95(exc. GST)
Temporarily out of stock
Phoenix Contact MACX MCR Series Signal Conditioner, Current/Voltage Input, Relay Output, 24V dc Supply, ATEX
  • RS Stock No. 189-2315
  • Mfr. Part No. 2906164
Subtotal (1 unit)
SGD437.94(exc. GST)
Stocked by manufacturer
GEORGIN 2 Channel Double Zener Barrier, ATEX
  • RS Stock No. 230-9452
  • Mfr. Part No. BZG2728PLUS
Subtotal (1 box of 1 unit)
SGD316.27(exc. GST)
In Stock
Siemens 3RS7003 Series Signal Conditioner, Current Input, Voltage Output, 24V ac/dc Supply
  • RS Stock No. 134-8037
  • Mfr. Part No. 3RS7003-1AE00
Subtotal (1 unit)
SGD417.55(exc. GST)
In Stock
RS PRO 750 Series Signal Conditioner, RTD, Thermocouple Input, Current/Voltage Output, 16.8V, 30 V Supply, Class I,
  • RS Stock No. 794-8533
Subtotal (1 unit)
SGD521.66(exc. GST)
Stocked by manufacturer
Phoenix Contact 1291 Series Temperature Transducer, Voltage Input, Analogue Output, 24V Supply, IECEx, ATEX
  • RS Stock No. 483-949
  • Mfr. Part No. 1291955
Subtotal (1 unit)
SGD669.52(exc. GST)
Stocked by manufacturer
Phoenix Contact MACX MCR Series Isolation Amplifier, Voltage Input, Voltage Output, 8V dc Supply, ATEX
  • RS Stock No. 254-4812
  • Mfr. Part No. 2865052
Subtotal (1 unit)
SGD341.12(exc. GST)
Temporarily out of stock
Phoenix Contact MACX MCR Series Signal Conditioner, Thermocouple, Voltage, Potentiometer, RTD Input, Current Output,
  • RS Stock No. 195-4825
  • Mfr. Part No. 2908660
Subtotal (1 unit)
SGD629.63(exc. GST)
Stocked by manufacturer
Phoenix Contact MINI MCR Series Solenoid Driver, Voltage Input, Voltage Output, ATEX
  • RS Stock No. 519-909
  • Mfr. Part No. 1277114
Subtotal (1 unit)
SGD427.60(exc. GST)
In Stock
Turck 2 Channel Galvanic Barrier, Analogue, IECEx/ATEX
  • RS Stock No. 808-6541
  • Mfr. Part No. IM35-22EX-HI/24VDC
Subtotal (1 unit)
SGD911.78(exc. GST)
Currently unavailable
Weidmüller WAZ5 Series Limit Signal Transmitter, Current Input, Relay Output, 24V dc Supply
  • RS Stock No. 287-5337
  • Mfr. Part No. 8543880000
Subtotal (1 unit)
SGD321.05(exc. GST)
In Stock
Phoenix Contact 3RS7005 Series Signal Conditioner, Current/Voltage Output, 18V dc, 30 V dc Supply, ATEX
  • RS Stock No. 653-6252
  • Mfr. Part No. 2708355
Subtotal (1 unit)
SGD829.04(exc. GST)
In Stock
Turck 1 Channel Galvanic Barrier, IECEx, ATEX
  • RS Stock No. 808-6566
  • Mfr. Part No. IM34-14EX-CDRI
Subtotal (1 unit)
SGD1,078.84(exc. GST)
In Stock
Weidmüller MCZ Series Signal Conditioner
  • RS Stock No. 577-498
  • Mfr. Part No. 8604420000
Subtotal (1 unit)
SGD132.02(exc. GST)
In Stock
Siemens 3RS7000 Series Signal Conditioner, Voltage Input, Current Output, 24V ac/dc Supply
  • RS Stock No. 134-8030
  • Mfr. Part No. 3RS7000-2DE00
Subtotal (1 unit)
SGD422.51(exc. GST)
1
42
49
Results per page

Related links