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

8 of 49
In Stock
Red Lion MINI MCR-SL-2CP-I-I-SP Series Signal Conditioner, RS232 Input, RS422, RS485 Output, 32V dc, 9 V dc Supply
  • RS Stock No. 309-6206
  • Mfr. Part No. ICM40030
Subtotal (1 unit)
TWD9,043.00(exc. GST)
TWD9,043.00/unit
Stocked by manufacturer
Phoenix Contact MINI MCR-SL-U-I-O Series Signal Conditioner, Current/Voltage Output, 18V dc, 30 V dc Supply, Canada
  • RS Stock No. 801-8951
  • Mfr. Part No. 2708614
Subtotal (1 unit)
TWD44,774.00(exc. GST)
TWD44,774.00/unit
In Stock
Endress+Hauser RN22 Series Signal Conditioner
  • RS Stock No. 267-9452
  • Mfr. Part No. RN22-8L1A
Subtotal (1 unit)
TWD7,322.00(exc. GST)
TWD7,322.00/unit
In Stock
PR Electronics Communication Interface Signal Conditioner, RTD, Pulse, Potentiometer, Frequency, Linear Resistance
  • RS Stock No. 796-7014
  • Mfr. Part No. 4511
Subtotal (1 unit)
TWD4,840.00(exc. GST)
TWD4,840.00/unit
Stocked by manufacturer
Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Voltage Output, 24V dc Supply, Class I, B, Div 2,
  • RS Stock No. 622-3221
  • Mfr. Part No. 2813541
Subtotal (1 unit)
TWD9,285.00(exc. GST)
TWD9,285.00/unit
Stocked by manufacturer
Siemens 3RS7005 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V ac/dc Supply
  • RS Stock No. 134-8048
  • Mfr. Part No. 3RS7005-2FE00
Subtotal (1 unit)
TWD14,889.00(exc. GST)
TWD14,889.00/unit
In Stock
Better World
Schneider Electric Harmony Analog Series Analogue Converter, Current/Voltage Input, Current/Voltage Output, 24V Supply,
  • RS Stock No. 221-2855
  • Mfr. Part No. RMCV60BD
Subtotal (1 unit)
TWD8,906.00(exc. GST)
TWD8,906.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Solenoid Driver, Digital Input, Digital Output
  • RS Stock No. 493-355
  • Mfr. Part No. 1291176
Subtotal (1 unit)
TWD11,320.00(exc. GST)
TWD11,320.00/unit
Stocked by manufacturer
Phoenix Contact MACX Series Signal Conditioner, Current Input, Current Output, 320V Supply, ATEX
  • RS Stock No. 240-1169
  • Mfr. Part No. 2908060
Subtotal (1 unit)
TWD8,813.00(exc. GST)
TWD8,813.00/unit
In Stock
Vega VEGATRENN 141 Series Galvanic Isolator, Current Input, 230 V, 65V ac Supply
  • RS Stock No. 227-0464
  • Mfr. Part No. TRENN141.ACXXKBX
Subtotal (1 unit)
TWD8,204.00(exc. GST)
TWD8,204.00/unit
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, RTD Input, Current/Voltage Output, 30V dc, 9.6 V dc Supply, ATEX
  • RS Stock No. 849-6392
  • Mfr. Part No. 2902052
Subtotal (1 unit)
TWD6,765.00(exc. GST)
TWD6,765.00/unit
Temporarily out of stock
Weidmüller ACT20C Series Signal Transducer, Current Input, Relay, Analogue Output, 10V Supply, DNV GL
  • RS Stock No. 287-5521
  • Mfr. Part No. 1510420000
Subtotal (1 unit)
TWD11,384.00(exc. GST)
TWD11,384.00/unit
In Stock
ZDAUTO BOT Series Signal Conditioner, Digital Output, 5V Supply
  • RS Stock No. 666-092
  • Mfr. Part No. BOT05750D1b
Subtotal (1 bag of 25 units)
TWD4,644.00(exc. GST)
TWD4,644.00/bag
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Voltage Input, Current Output, 24V dc Supply, Groups A, Div 2, GL,
  • RS Stock No. 622-3192
  • Mfr. Part No. 2813512
Subtotal (1 unit)
TWD9,285.00(exc. GST)
TWD9,285.00/unit
Stocked by manufacturer
Turck Galvanic Barrier, Analogue, IECEx/ATEX
  • RS Stock No. 808-6544
  • Mfr. Part No. IM31-12EX-I
Subtotal (1 unit)
TWD16,048.00(exc. GST)
TWD16,048.00/unit
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Resistance Input, Current/Voltage Output, 24V dc Supply, ATEX
  • RS Stock No. 616-8944
  • Mfr. Part No. 2864095
Subtotal (1 unit)
TWD9,243.00(exc. GST)
TWD9,243.00/unit
Stocked by manufacturer
Endress+Hauser Galvanic Barrier, Zone 2
  • RS Stock No. 288-6007
  • Mfr. Part No. RN42-BE1AU
Subtotal (1 unit)
TWD8,740.00(exc. GST)
TWD8,740.00/unit
Stocked by manufacturer
Phoenix Contact Zener Barrier, NAMUR, ATEX
  • RS Stock No. 785-7806
  • Mfr. Part No. 2866006
Subtotal (1 unit)
TWD8,159.00(exc. GST)
TWD8,159.00/unit
In Stock
PR Electronics 5200 Series Universal Transmitter, Frequency Input, Relay, Current, Voltage Output, 19.2V dc, 28.8 V dc
  • RS Stock No. 796-6985
  • Mfr. Part No. 5225A2
Subtotal (1 unit)
TWD17,189.00(exc. GST)
TWD17,189.00/unit
In Stock
Turck 2 Channel Galvanic Barrier, IECEx/ATEX
  • RS Stock No. 808-6548
  • Mfr. Part No. IM31-22EX-I
Subtotal (1 unit)
TWD16,251.00(exc. GST)
TWD16,251.00/unit
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