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

977 Products showing for Signal Conditioners & Isolators

5 of 49
Stocked by manufacturer
Phoenix Contact PACT Series Repeater, 12.3V Supply
  • RS Stock No. 131-587
  • Mfr. Part No. 2906230
Subtotal (1 unit)
TWD11,605.00(exc. GST)
TWD11,605.00/unit
In Stock
Phoenix Contact MACX Series Passive Isolator, Current Input, Analogue Output, 30V dc, 6 V dc Supply, ATEX
  • RS Stock No. 535-885
  • Mfr. Part No. 2905281
Subtotal (1 unit)
TWD18,102.00(exc. GST)
TWD18,102.00/unit
In Stock
Phoenix Contact MACX MCR Series Signal Conditioner, Voltage Input, Current/Voltage Output, 24V dc Supply
  • RS Stock No. 171-7043
  • Mfr. Part No. 2906243
Subtotal (1 unit)
TWD14,346.00(exc. GST)
TWD14,346.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Signal Conditioner, Voltage Input, Resistance, Voltage Output, ATEX
  • RS Stock No. 217-6414
  • Mfr. Part No. 2924113
Subtotal (1 unit)
TWD7,327.00(exc. GST)
TWD7,327.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Signal Conditioner, Current Input, Current Output, 30.5V Supply, ATEX
  • RS Stock No. 122-9818
  • Mfr. Part No. 2905279
Subtotal (1 unit)
TWD9,326.00(exc. GST)
TWD9,326.00/unit
In Stock
Weidmüller ACT20M Series Signal Conditioner, Current Input, Current Output, 24V dc Supply, FM Div2, ATEX, UL
  • RS Stock No. 892-8947
  • Mfr. Part No. 1175990000
Subtotal (1 unit)
TWD8,229.00(exc. GST)
TWD8,229.00/unit
Stocked by manufacturer
Phoenix Contact 2924 Series Solenoid Driver, Voltage Output, 24V Supply, ATEX
  • RS Stock No. 518-344
  • Mfr. Part No. 2924870
Subtotal (1 unit)
TWD9,963.00(exc. GST)
TWD9,963.00/unit
Stocked by manufacturer
Phoenix Contact 2905 Series Solenoid Driver, Voltage Input, Transistor Output, 24V Supply, IECEx/ATEX
  • RS Stock No. 518-332
  • Mfr. Part No. 2905669
Subtotal (1 unit)
TWD9,963.00(exc. GST)
TWD9,963.00/unit
Stocked by manufacturer
Phoenix Contact 2865421 Series Signal Conditioner, Current Input, Current Output, 24V dc Supply, ATEX
  • RS Stock No. 522-050
  • Mfr. Part No. 2865421
Subtotal (1 unit)
TWD15,264.00(exc. GST)
TWD15,264.00/unit
In Stock
Phoenix Contact Galvanic Barrier, ATEX
  • RS Stock No. 751-1355
  • Mfr. Part No. 2865515
Subtotal (1 unit)
TWD7,100.00(exc. GST)
TWD7,100.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Isolation Amplifier, Current/Voltage Input, Current/Voltage Output, 24V dc Supply, UKCA
  • RS Stock No. 522-398
  • Mfr. Part No. 2924883
Subtotal (1 unit)
TWD7,070.00(exc. GST)
TWD7,070.00/unit
Temporarily out of stock
Weidmüller ACT20P Series Signal Converter, Universal Input, Universal Output, 24V dc Supply
  • RS Stock No. 287-5510
  • Mfr. Part No. 1477420000
Subtotal (1 unit)
TWD12,120.00(exc. GST)
TWD12,120.00/unit
In Stock
PR Electronics 4 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 300V dc Supply, Zone, EAC,
  • RS Stock No. 180-9470
  • Mfr. Part No. 4184
Subtotal (1 unit)
TWD9,865.00(exc. GST)
TWD9,865.00/unit
In Stock
Trumeter SC Series Signal Conditioner, Current/Voltage Input, Analogue, Digital Output
  • RS Stock No. 759-690
  • Mfr. Part No. SC-TEMP-DIN
Subtotal (1 unit)
TWD6,760.00(exc. GST)
TWD6,760.00/unit
In Stock
Pepperl + Fuchs 3 Channel Zener Barrier, ATEX
  • RS Stock No. 280-6614
  • Mfr. Part No. Z954
Subtotal (1 unit)
TWD7,395.00(exc. GST)
TWD7,395.00/unit
New product - Preorder today
Motrona DM Series Analogue Converter, Current/Voltage Input, Current/Voltage Output, 18V dc, 30 V dc Supply
  • RS Stock No. 309-359
  • Mfr. Part No. DM221
Subtotal (1 unit)
TWD16,060.00(exc. GST)
TWD16,060.00/unit
Temporarily out of stock
Weidmüller ACT20P Series Signal Converter, Resistance Input, Analogue Output, 60V dc Supply
  • RS Stock No. 287-4671
  • Mfr. Part No. 2456820000
Subtotal (1 unit)
TWD15,556.00(exc. GST)
TWD15,556.00/unit
In Stock
Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
  • RS Stock No. 793-4310
  • Mfr. Part No. Z966.H
Subtotal (1 unit)
TWD5,206.00(exc. GST)
TWD5,206.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Signal Conditioner, Switch Input, Relay Output, 30V Supply, ATEX
  • RS Stock No. 217-6412
  • Mfr. Part No. 2924061
Subtotal (1 unit)
TWD6,698.00(exc. GST)
TWD6,698.00/unit
In Stock
Crouzet PLCs-Programmable Logic Controller, 24V dc Supply
  • RS Stock No. 509-1067
  • Mfr. Part No. 88950154
Subtotal (1 unit)
TWD4,143.00(exc. GST)
TWD4,143.00/unit
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