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

3 of 49
In Stock
Endress+Hauser RN22 Series Signal Conditioner
  • RS Stock No. 267-9455
  • Mfr. Part No. RN22-AA3A
Subtotal (1 unit)
TWD8,961.00(exc. GST)
TWD8,961.00/unit
New product - Preorder today
Motrona FM Series Analogue Frequency Converter, Pulse Input, Digital, Relay Output, 30V dc, 9 V dc Supply
  • RS Stock No. 309-371
  • Mfr. Part No. FM210
Subtotal (1 unit)
TWD41,696.00(exc. GST)
TWD41,696.00/unit
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, RTD Input, Current Output, 30V dc Supply, ATEX
  • RS Stock No. 190-2099
  • Mfr. Part No. 2810308
Subtotal (1 unit)
TWD9,917.00(exc. GST)
TWD9,917.00/unit
In Stock
Phoenix Contact MINI MCR Series Frequency Transducer, Frequency Input, Transistor Output, 24V dc Supply
  • RS Stock No. 134-8681
  • Mfr. Part No. 2902058
Subtotal (1 unit)
TWD8,774.00(exc. GST)
TWD8,774.00/unit
Temporarily out of stock
Weidmüller ACT20M Series Signal Conditioner, Current Input, Analogue Current Output, 24V dc Supply, cULus, ATEX, FM Div2
  • RS Stock No. 892-8953
  • Mfr. Part No. 1176020000
Subtotal (1 unit)
TWD10,889.00(exc. GST)
TWD10,889.00/unit
In Stock
PR Electronics Loop Powered Isolator, PNP, Pulse, TTL, Frequency, Potentiometer, RTD, Linear Resistance, NPN Input, NPN,
  • RS Stock No. 796-6916
  • Mfr. Part No. 6185B
Subtotal (1 unit)
TWD13,253.00(exc. GST)
TWD13,253.00/unit
In Stock
Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
  • RS Stock No. 793-4297
  • Mfr. Part No. Z779
Subtotal (1 unit)
TWD4,684.00(exc. GST)
TWD4,684.00/unit
Temporarily out of stock
PR Electronics 3100 Series Isolated Universal Converter, Universal Input, Current/Voltage Output, 16.8V dc, 31.2 V dc
  • RS Stock No. 796-7095
  • Mfr. Part No. 3114
Subtotal (1 unit)
TWD9,217.00(exc. GST)
TWD9,217.00/unit
In Stock
Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
  • RS Stock No. 793-4272
  • Mfr. Part No. Z757
Subtotal (1 unit)
TWD5,004.00(exc. GST)
TWD5,004.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Signal Conditioner, Thermocouple, RTD Input, Relay Output, 230V ac/dc, 24 V ac/dc
  • RS Stock No. 196-0380
  • Mfr. Part No. 2811828
Subtotal (1 unit)
TWD17,401.00(exc. GST)
TWD17,401.00/unit
In Stock
GEORGIN GB 64000 Series Isolation Amplifier, Current, Voltage Input, Analogue Output, 24V dc Supply
  • RS Stock No. 230-9463
  • Mfr. Part No. GB64000S
Subtotal (1 box of 1 unit)
TWD8,216.00(exc. GST)
TWD8,216.00/box
Stocked by manufacturer
Siemens 3RS7025 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V ac/dc Supply
  • RS Stock No. 134-8058
  • Mfr. Part No. 3RS7025-1FE00
Subtotal (1 unit)
TWD16,809.00(exc. GST)
TWD16,809.00/unit
In Stock
PR Electronics 3100 Series Isolating Signal Converter, Current Input, Current Output, 16.8V dc, 31.2 V dc Supply, ATEX
  • RS Stock No. 796-7082
  • Mfr. Part No. 3108
Subtotal (1 unit)
TWD8,221.00(exc. GST)
TWD8,221.00/unit
In Stock
Kubler Signal Conditioner, RS422 Input, Analogue, RS485, RS232 Output, 18V dc, 36 V dc Supply
  • RS Stock No. 200-9779
  • Mfr. Part No. 8.SK.1S1D-1A2RS
Subtotal (1 unit)
TWD24,211.00(exc. GST)
TWD24,211.00/unit
In Stock
Idec 6 Channel Zener Barrier, ATEX
  • RS Stock No. 165-6897
  • Mfr. Part No. EB3C-R06AN
Subtotal (1 unit)
TWD14,290.00(exc. GST)
TWD14,290.00/unit
In Stock
Phoenix Contact Galvanic Barrier, Analogue, ATEX
  • RS Stock No. 709-9628
  • Mfr. Part No. 2865340
Subtotal (1 unit)
TWD7,485.00(exc. GST)
TWD7,485.00/unit
In Stock
PR Electronics 5114A Series Converter Module, Thermocouple, Current, Voltage, RTD Input, Current/Voltage Output, 21.6 V
  • RS Stock No. 796-6929
  • Mfr. Part No. 5114AB
Subtotal (1 unit)
TWD29,246.00(exc. GST)
TWD29,246.00/unit
In Stock
PR Electronics 3100 Series Isolating Signal Converter, Current/Voltage Input, Current/Voltage Output, 16.8V dc, 31.2 V
  • RS Stock No. 796-7086
  • Mfr. Part No. 3109
Subtotal (1 unit)
TWD9,168.00(exc. GST)
TWD9,168.00/unit
In Stock
PR Electronics 3 Series Signal Conditioner, Current Input, Current Output, 35V dc, 6 V dc Supply, IECEx/ATEX
  • RS Stock No. 136-8710
  • Mfr. Part No. 3186B2
Subtotal (1 unit)
TWD8,271.00(exc. GST)
TWD8,271.00/unit
In Stock
Weidmüller ACT20X Series Signal Conditioner, RTD Input, Current Output, 30V Supply
  • RS Stock No. 393-0235
  • Mfr. Part No. 8425720000
Subtotal (1 unit)
TWD3,463.00(exc. GST)
TWD3,463.00/unit
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