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

956 Products showing for Signal Conditioners & Isolators

44 of 48
In Stock
RS PRO Temperature Converter, RTD Input, Current, Voltage Output, 24 V ac/dc Supply
  • RS Stock No. 606-324
Subtotal (1 unit)
SGD185.47(exc. GST)
Temporarily out of stock
Penko SGM800 Series Amplifier, Voltage Input, Digital Output, 18/32 V dc Supply
  • RS Stock No. 250-7640
  • Mfr. Part No. 7600A10014-CHK
Subtotal (1 unit)
SGD1,497.78(exc. GST)
Temporarily out of stock
Endress+Hauser 2 Channel Galvanic Barrier, Zone 2
  • RS Stock No. 288-6004
  • Mfr. Part No. RN22-8L3B
Subtotal (1 unit)
SGD366.62(exc. GST)
In Stock
Endress+Hauser 1 Channel Galvanic Barrier, Zone 2
  • RS Stock No. 288-6567
  • Mfr. Part No. RN42-CB1AU
Subtotal (1 unit)
SGD307.10(exc. GST)
In Stock
RS PRO 1 Channel Zener Barrier, Digital, IECEx/ATEX
  • RS Stock No. 329-090
Subtotal (1 unit)
SGD213.28(exc. GST)
Temporarily out of stock
WAGO 857 Series Signal Conditioning
  • RS Stock No. 609-475
  • Mfr. Part No. 857-452
Subtotal (1 unit)
SGD463.96(exc. GST)
Temporarily out of stock
Endress+Hauser 2 Channel Galvanic Barrier, Zone 2
  • RS Stock No. 288-6001
  • Mfr. Part No. RN22-BE1A
Subtotal (1 unit)
SGD281.94(exc. GST)
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Current Output, 9.6/30 V dc Supply, ATEX
  • RS Stock No. 175-0488
  • Mfr. Part No. 2905629
Subtotal (1 unit)
SGD309.91(exc. GST)
Temporarily out of stock
Endress+Hauser 2 Channel Galvanic Barrier, Zone 2
  • RS Stock No. 288-6011
  • Mfr. Part No. RNO22-8M2A
Subtotal (1 unit)
SGD454.36(exc. GST)
In Stock
JM CONCEPT TELIS 9000 Series Universal Signal Converter, Current, Linear Resistance, RTD, Potentiometer, Thermocouple
  • RS Stock No. 232-8236
  • Mfr. Part No. TELIS9150U1
Subtotal (1 unit)
SGD497.61(exc. GST)
Temporarily out of stock
Siemens 3RS7005 Series Signal Conditioner, Current/Voltage Input, Frequency Output, 24 V ac/dc Supply
  • RS Stock No. 134-8050
  • Mfr. Part No. 3RS7005-2KE00
Subtotal (1 unit)
SGD443.51(exc. GST)
Temporarily out of stock
PR Electronics 3100 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 16.8/31.2 V dc Supply,
  • RS Stock No. 270-1729
  • Mfr. Part No. 3117-N
Subtotal (1 unit)
SGD309.92(exc. GST)
Temporarily out of stock
Phoenix Contact MACX MCR Series Signal Conditioner, Current/Voltage Input, Relay Output, 24 V dc Supply, IECEx, ATEX
  • RS Stock No. 191-4371
  • Mfr. Part No. 2906165
Subtotal (1 unit)
SGD437.94(exc. GST)
Temporarily out of stock
WAGO 857 Series Signal Conditioner, Current Input, Voltage Output, 24 V dc Supply, IECEx, ATEX
  • RS Stock No. 279-2525
  • Mfr. Part No. 857-415
Subtotal (1 unit)
SGD306.89(exc. GST)
Temporarily out of stock
Weidmüller ACT20XP Series Signal Converter, Universal Input, Universal Output, 264 V ac Supply
  • RS Stock No. 287-5524
  • Mfr. Part No. 1545720000
Subtotal (1 unit)
SGD468.62(exc. GST)
In Stock
Phoenix Contact 2 Channel Galvanic Barrier, Digital
  • RS Stock No. 709-9650
  • Mfr. Part No. 2924090
Subtotal (1 unit)
SGD380.86(exc. GST)
Temporarily out of stock
Siemens 3RS7025 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24/240 V ac/dc Supply
  • RS Stock No. 134-8059
  • Mfr. Part No. 3RS7025-1FW00
Subtotal (1 unit)
SGD760.53(exc. GST)
New product - Preorder today
Motrona DM Series Analogue Converter, Current/Voltage Input, Current/Voltage Output, 18/30 V dc Supply
  • RS Stock No. 309-359
  • Mfr. Part No. DM221
Subtotal (1 unit)
SGD541.20(exc. GST)
Temporarily out of stock
Weidmüller ACT20P Series Signal Conditioner
  • RS Stock No. 892-8987
  • Mfr. Part No. 7760054117
Subtotal (1 unit)
SGD689.03(exc. GST)
Temporarily out of stock
RS PRO Relay, Relay Output, 12 V Supply
  • RS Stock No. 325-336
Subtotal (1 unit)
SGD0.87(exc. GST)
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