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

9 of 49
Temporarily out of stock
Pepperl + Fuchs Zener Barrier, ATEX
  • RS Stock No. 793-4278
  • Mfr. Part No. Z728
Subtotal (1 unit)
TWD5,294.00(exc. GST)
TWD5,294.00/unit
Stocked by manufacturer
Phoenix Contact 2905625 Series Signal Conditioner, Current Input, Current Output, 24V dc Supply, ATEX
  • RS Stock No. 518-331
  • Mfr. Part No. 2905625
Subtotal (1 unit)
TWD15,194.00(exc. GST)
TWD15,194.00/unit
Stocked by manufacturer
Phoenix Contact 2908065 Series Signal Conditioner, Current Input, Current Output, 24V dc Supply, ATEX
  • RS Stock No. 497-969
  • Mfr. Part No. 2908065
Subtotal (1 unit)
TWD15,264.00(exc. GST)
TWD15,264.00/unit
Temporarily out of stock
PR Electronics 9100 Series Signal Conditioner, Current/Voltage Input, Current Output, 19.2V dc, 31.2 V dc Supply,
  • RS Stock No. 270-1744
  • Mfr. Part No. 9107AA
Subtotal (1 unit)
TWD11,608.00(exc. GST)
TWD11,608.00/unit
In Stock
PR Electronics 9200 Series Signal Conditioner, PNP Input, Relay Output, 19.2V dc, 31.2 V dc Supply, IECEx/ATEX
  • RS Stock No. 270-1758
  • Mfr. Part No. 9203A1B
Subtotal (1 unit)
TWD11,698.00(exc. GST)
TWD11,698.00/unit
In Stock
Phoenix Contact EMG Series Signal Conditioning, Potentiometer Input
  • RS Stock No. 410-4718
  • Mfr. Part No. 2940252
Subtotal (1 unit)
TWD4,406.00(exc. GST)
TWD4,406.00/unit
In Stock
GEORGIN 2 Channel Intrinsic Security Power Supply, 4 to 20 mA, ATEX
  • RS Stock No. 230-9448
  • Mfr. Part No. BXNT600E
Subtotal (1 box of 1 unit)
TWD14,104.00(exc. GST)
TWD14,104.00/box
In Stock
Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
  • RS Stock No. 280-6585
  • Mfr. Part No. Z 787.H
Subtotal (1 unit)
TWD5,555.00(exc. GST)
TWD5,555.00/unit
In Stock
Phoenix Contact MACX MCR-SL-2NAM-R-UP-SP Series Isolation Amplifier, 230V ac/dc, 24 V ac/dc Supply, ATEX
  • RS Stock No. 212-7325
  • Mfr. Part No. 2924304
Subtotal (1 unit)
TWD7,474.00(exc. GST)
TWD7,474.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Signal Conditioner, Thermocouple, Potentiometer, Voltage, RTD Input, Current Output,
  • RS Stock No. 175-0484
  • Mfr. Part No. 2908664
Subtotal (1 unit)
TWD16,694.00(exc. GST)
TWD16,694.00/unit
In Stock
Red Lion IAMA Series Isolated Universal Converter, Linear Resistance, Voltage, Current, Potentiometer, RTD, Thermocouple
  • RS Stock No. 276-9858
  • Mfr. Part No. IAMA0001
Subtotal (1 unit)
TWD13,516.00(exc. GST)
TWD13,516.00/unit
In Stock
Pepperl + Fuchs S1SD Series Signal Conditioner, Current Input, Current Output, 16.8V dc, 31.2 V dc Supply, DEMKO 16 ATEX
  • RS Stock No. 134-8126
  • Mfr. Part No. S1SD-1Ai-1C.H
Subtotal (1 unit)
TWD5,555.00(exc. GST)
TWD5,555.00/unit
Temporarily out of stock
WAGO 857 Series Signal Conditioner, Voltage Input, Current Output, 24V dc Supply, IECEx, ATEX
  • RS Stock No. 279-2524
  • Mfr. Part No. 857-414
Subtotal (1 unit)
TWD7,131.00(exc. GST)
TWD7,131.00/unit
Temporarily out of stock
Weidmüller ACT20P Series Signal Transducer, Current Input, Relay, Analogue Output, 31.2V Supply, DNV GL
  • RS Stock No. 287-5520
  • Mfr. Part No. 1510330000
Subtotal (1 unit)
TWD8,424.00(exc. GST)
TWD8,424.00/unit
In Stock
WAGO Jumpflex Series Current Measuring Transducer, Current Input, Digital, Relay Output, 24V dc Supply
  • RS Stock No. 135-7398
  • Mfr. Part No. 2857-550
Subtotal (1 unit)
TWD21,019.00(exc. GST)
TWD21,019.00/unit
In Stock
Endress+Hauser 2 Channel Galvanic Barrier, Relay, Ex
  • RS Stock No. 256-6199
  • Mfr. Part No. RLN22-8M2A+LA
Subtotal (1 unit)
TWD6,478.00(exc. GST)
TWD6,478.00/unit
In Stock
RS PRO LCIS-WP-WAA Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V ac/dc Supply
  • RS Stock No. 192-3396
Subtotal (1 unit)
TWD6,397.00(exc. GST)
TWD6,397.00/unit
In Stock
Phoenix Contact PSI-MOS-PROFIB/FO 850 E Series Fibre Optic Converter, Voltage Input, Digital Output, 24V Supply, ATEX
  • RS Stock No. 241-6045
  • Mfr. Part No. 2708274
Subtotal (1 unit)
TWD30,111.00(exc. GST)
TWD30,111.00/unit
In Stock
Murrelektronik Limited MTW 12.4 Series Signal Conditioner, Frequency Input, Current/Voltage Output, 10V dc, 30 V dc
  • RS Stock No. 137-0331
  • Mfr. Part No. 44275
Subtotal (1 unit)
TWD8,205.00(exc. GST)
TWD8,205.00/unit
In Stock
PR Electronics 6185 Series Loop Powered Isolator, Current Input, Current Output, UL, ATEX, EAC, DNV GL, IECEx, EU RO
  • RS Stock No. 796-6948
  • Mfr. Part No. 6185D
Subtotal (1 unit)
TWD17,040.00(exc. GST)
TWD17,040.00/unit
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