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

1008 Products showing for Signal Conditioners & Isolators

1 of 51
In Stock
GIC 225 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V dc Supply
  • RS Stock No. 884-2458
  • Mfr. Part No. 2SC3D11CC3
Subtotal (1 unit)
$126.26(exc. GST)
$126.26/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)
$2,450.68(exc. GST)
$2,450.68/unit
In Stock
Red Lion 3RS7003 Series Signal Conditioner, RS232 Input, RS485, RS422 Output, 26V dc, 9 V dc Supply
  • RS Stock No. 435-0753
  • Mfr. Part No. ICM50000
Subtotal (1 unit)
$667.69(exc. GST)
$667.69/unit
Temporarily out of stock
Weidmüller ACT20M Series Signal Converter, Voltage Input, Current Output, 24V dc Supply, IECEx, ATEX
  • RS Stock No. 287-5475
  • Mfr. Part No. 1375470000
Subtotal (1 unit)
$758.66(exc. GST)
$758.66/unit
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current/Voltage Input, Relay Output, 24V dc Supply, ATEX
  • RS Stock No. 134-8685
  • Mfr. Part No. 2902033
Subtotal (1 unit)
$475.37(exc. GST)
$475.37/unit
In Stock
Eaton 3 Channel Zener Barrier, ATEX
  • RS Stock No. 612-5329
  • Mfr. Part No. MTL7756AC/RS
Subtotal (1 unit)
$871.17(exc. GST)
$871.17/unit
Stocked by manufacturer
Phoenix Contact Zener Barrier, NAMUR, ATEX
  • RS Stock No. 785-7806
  • Mfr. Part No. 2866006
Subtotal (1 unit)
$480.49(exc. GST)
$480.49/unit
Temporarily out of stock
RS PRO Relay, Current/Voltage Input, 12V Supply
  • RS Stock No. 325-327
Subtotal (1 unit)
$1.13(exc. GST)
$1.13/unit
Currently unavailable
Motrona DM Series Analogue Converter, Current/Voltage Input, Current/Voltage Output, 18V dc, 30 V dc Supply
  • RS Stock No. 309-361
  • Mfr. Part No. DM222
Subtotal (1 unit)
$1,069.46(exc. GST)
$1,069.46/unit
In Stock
Lumel P20 Series Temperature Transducer, Current Input, Analogue Output
  • RS Stock No. 173-520
  • Mfr. Part No. P20 2201008
Subtotal (1 unit)
$593.12(exc. GST)
$593.12/unit
Stocked by manufacturer
Phoenix Contact MACX MCR-PTB-SP Series Signal Conditioner, Voltage Input, Relay Output, 24V dc Supply, ATEX
  • RS Stock No. 207-3415
  • Mfr. Part No. 2924184
Subtotal (1 unit)
$315.20(exc. GST)
$315.20/unit
Temporarily out of stock
Motrona IX Series Indicator, 30V Supply, EN IEC 63000
  • RS Stock No. 719-390
  • Mfr. Part No. IX355
Subtotal (1 unit)
$1,198.86(exc. GST)
$1,198.86/unit
Temporarily out of stock
RS PRO Relay, Current/Voltage Input, 12V Supply
  • RS Stock No. 325-332
Subtotal (1 unit)
$1.80(exc. GST)
$1.80/unit
In Stock
Phoenix Contact 3RS7002 Series Signal Conditioner, Voltage Input, Voltage Output, 19.2V dc, 30 V dc Supply, D T5, B, C,
  • RS Stock No. 532-9968
  • Mfr. Part No. 2864684
Subtotal (1 unit)
$611.49(exc. GST)
$611.49/unit
Temporarily out of stock
RS PRO Relay, Current/Voltage Input, 12V Supply
  • RS Stock No. 325-341
Subtotal (1 unit)
$1.39(exc. GST)
$1.39/unit
In Stock
Eaton Zener Barrier, ATEX
  • RS Stock No. 612-5335
  • Mfr. Part No. MTL7787+/RS
Subtotal (1 unit)
$259.09(exc. GST)
$259.09/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)
$899.50(exc. GST)
$899.50/unit
In Stock
Motrona UZ Series Signal Converter, Current/Voltage Input, Frequency Output, 12V dc, 30 V dc Supply
  • RS Stock No. 309-397
  • Mfr. Part No. UZ210
Subtotal (1 unit)
$1,341.31(exc. GST)
$1,341.31/unit
In Stock
Red Lion IAMS Series Signal Conditioner, RTD, Linear Resistance, Potentiometer, Voltage, Thermocouple, Current Input,
  • RS Stock No. 276-9860
  • Mfr. Part No. IAMS0020
Subtotal (1 unit)
$879.38(exc. GST)
$879.38/unit
In Stock
Eaton MTL Series Signal Conditioner, Voltage Input, Voltage Output, 20V dc, 35 V dc Supply, Zone 0, IIC, T4 to 6, Group
  • RS Stock No. 174-7908
  • Mfr. Part No. MTL5525
Subtotal (1 unit)
$448.14(exc. GST)
$448.14/unit
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