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

959 Products showing for Signal Conditioners & Isolators

1 of 48
In Stock
PR Electronics Communication Interface Signal Conditioner, Potentiometer, Pulse, Frequency, RTD, Linear Resistance
  • RS Stock No. 796-7039
  • Mfr. Part No. 4590
Subtotal (1 unit)
SGD431.93(exc. GST)
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 9.6/30 V dc Supply,
  • RS Stock No. 849-6367
  • Mfr. Part No. 2902040
Subtotal (1 unit)
SGD378.56(exc. GST)
Temporarily out of stock
Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
  • RS Stock No. 793-4272
  • Mfr. Part No. Z757
Subtotal (1 unit)
SGD220.23(exc. GST)
In Stock
Phoenix Contact PSM Series Interface Converter, RS232, RS422, RS485 Input, RS485, RS422 Output, 24 V ac/dc Supply, Ex nA
  • RS Stock No. 370-7675
  • Mfr. Part No. 2744416
Subtotal (1 unit)
SGD786.20(exc. GST)
Temporarily out of stock
Eaton MTL Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 18/32 V dc Supply
  • RS Stock No. 144-8694
  • Mfr. Part No. MTL1249
Subtotal (1 unit)
SGD281.77(exc. GST)
Temporarily out of stock
Lumel P17G Series Passive Isolator, Current Input, Current Output, 50 V Supply
  • RS Stock No. 173-531
  • Mfr. Part No. P17G 000
Subtotal (1 unit)
SGD149.46(exc. GST)
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Resistance Input, Current/Voltage Output, 24 V dc Supply, ATEX
  • RS Stock No. 616-8944
  • Mfr. Part No. 2864095
Subtotal (1 unit)
SGD414.38(exc. GST)
In Stock
Advantech ADAM Series Serial Converter, RS232 Input, RS485, RS422 Output, 10/30 V dc Supply
  • RS Stock No. 283-8001
  • Mfr. Part No. ADAM-4520
Subtotal (1 unit)
SGD160.37(exc. GST)
In Stock
PR Electronics Universal f/I-f/f converter Series Frequency/Current Converter, Current, Frequency Input, Analogue, Relay
  • RS Stock No. 236-3271
  • Mfr. Part No. 4225A
Subtotal (1 unit)
SGD350.42(exc. GST)
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24 V dc Supply, ATEX
  • RS Stock No. 134-8669
  • Mfr. Part No. 2905026
Subtotal (1 unit)
SGD406.76(exc. GST)
Temporarily out of stock
Phoenix Contact MINI MCR Series Signal Conditioner, Voltage Input, Voltage Output, 30 V dc Supply
  • RS Stock No. 489-2926
  • Mfr. Part No. 2864134
Subtotal (1 unit)
SGD126.59(exc. GST)
In Stock
PR Electronics Signal Conditioner, Zone, EAC, UL, FM, Zone 2, Hardware Assessment, EU RO marine, IECEx, ATEX, DNV GL
  • RS Stock No. 827-5498
  • Mfr. Part No. 5104AA
Subtotal (1 unit)
SGD536.55(exc. GST)
In Stock
Endress+Hauser 1 Channel Galvanic Barrier, Relay, ATEX
  • RS Stock No. 256-6200
  • Mfr. Part No. RLN22-AA1A
Subtotal (1 unit)
SGD182.39(exc. GST)
In Stock
Phoenix Contact 3RS7002 Series Signal Conditioner, Current Input, Current Output, 19.2/30 V dc Supply, ATEX
  • RS Stock No. 532-9946
  • Mfr. Part No. 2864406
Subtotal (1 unit)
SGD360.62(exc. GST)
Temporarily out of stock
WAGO 857 Series Signal Conditioner, Current Input, Current/Voltage Output, 24 V dc Supply, ATEX, IECEx
  • RS Stock No. 279-2527
  • Mfr. Part No. 857-420
Subtotal (1 unit)
SGD436.24(exc. GST)
Temporarily out of stock
Weidmüller ACT20M Series Signal Conditioner, Current Input, Analogue Current Output, 24 V dc Supply, cULus, ATEX, FM
  • RS Stock No. 892-8953
  • Mfr. Part No. 1176020000
Subtotal (1 unit)
SGD527.80(exc. GST)
In Stock
Phoenix Contact MACX MCR Series Signal Conditioner, Current Input, Current Output, 9.6/30 V dc Supply, ATEX
  • RS Stock No. 174-3473
  • Mfr. Part No. 2905628
Subtotal (1 unit)
SGD295.56(exc. GST)
Temporarily out of stock
Weidmüller MCZ Series Signal Conditioner
  • RS Stock No. 577-539
  • Mfr. Part No. 8411190000
Subtotal (1 unit)
SGD161.05(exc. GST)
In Stock
Phoenix Contact MACX MCR Series Signal Conditioner, Voltage Input, Current/Voltage Output, 24 V dc Supply
  • RS Stock No. 171-7041
  • Mfr. Part No. 2906239
Subtotal (1 unit)
SGD649.27(exc. GST)
Temporarily out of stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Profinet Output, 12/24 V Supply
  • RS Stock No. 240-7307
  • Mfr. Part No. 2905637
Subtotal (1 unit)
SGD682.28(exc. GST)
1
2
3
48
Results per page

Related links