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

986 Products showing for Signal Conditioners & Isolators

45 of 50
Stocked by manufacturer
Phoenix Contact 1291 Series Temperature Transducer, Voltage Input, Analogue Output, 24V Supply, IECEx, ATEX
  • RS Stock No. 483-949
  • Mfr. Part No. 1291955
Subtotal (1 unit)
SGD669.52(exc. GST)
SGD669.52/unit
Temporarily out of stock
Phoenix Contact MACX MCR Series Signal Conditioner, Thermocouple, Voltage, Potentiometer, RTD Input, Current Output,
  • RS Stock No. 195-4825
  • Mfr. Part No. 2908660
Subtotal (1 unit)
SGD717.24(exc. GST)
SGD717.24/unit
In Stock
Turck 2 Channel Galvanic Barrier, Analogue, IECEx/ATEX
  • RS Stock No. 808-6541
  • Mfr. Part No. IM35-22EX-HI/24VDC
Subtotal (1 unit)
SGD939.13(exc. GST)
SGD939.13/unit
Currently unavailable
Weidmüller WAZ5 Series Limit Signal Transmitter, Current Input, Relay Output, 24V dc Supply
  • RS Stock No. 287-5337
  • Mfr. Part No. 8543880000
Subtotal (1 unit)
SGD321.05(exc. GST)
SGD321.05/unit
In Stock
Phoenix Contact 3RS7005 Series Signal Conditioner, Current/Voltage Output, 18V dc, 30 V dc Supply, ATEX
  • RS Stock No. 653-6252
  • Mfr. Part No. 2708355
Subtotal (1 unit)
SGD861.42(exc. GST)
SGD861.42/unit
In Stock
Lumel P30H Series Signal Transducer, Current/Voltage Input, Analogue Output
  • RS Stock No. 173-532
  • Mfr. Part No. P30H 1021200M0
Subtotal (1 unit)
SGD816.05(exc. GST)
SGD816.05/unit
In Stock
JM CONCEPT ULCOS 600 Series Current Signal Converter, Voltage, Current Input, 0 to 10 V, 0 to 20 mA Output, 230 V ac, 90
  • RS Stock No. 232-8246
  • Mfr. Part No. ULCOS600I1
Subtotal (1 unit)
SGD331.12(exc. GST)
SGD331.12/unit
In Stock
GEORGIN 2 Channel Intrinsic Security Power Supply, 4 to 20 mA, ATEX
  • RS Stock No. 230-9447
  • Mfr. Part No. BXNT6002
Subtotal (1 box of 1 unit)
SGD546.65(exc. GST)
SGD546.65/box
Temporarily out of stock
Endress+Hauser Galvanic Barrier, Zone 2
  • RS Stock No. 288-6562
  • Mfr. Part No. RN42-8L1AO
Subtotal (1 unit)
SGD316.31(exc. GST)
SGD316.31/unit
In Stock
Siemens 3RS7000 Series Signal Conditioner, Voltage Input, Current Output, 24V ac/dc Supply
  • RS Stock No. 134-8030
  • Mfr. Part No. 3RS7000-2DE00
Subtotal (1 unit)
SGD422.51(exc. GST)
SGD422.51/unit
Temporarily out of stock
Weidmüller ACT20X Series Signal Conditioner, PNP Input, Relay Output, 19.2V, 31.2 V Supply, IECEx
  • RS Stock No. 902-8029
  • Mfr. Part No. 8965410000
Subtotal (1 unit)
SGD358.29(exc. GST)
SGD358.29/unit
In Stock
Turck 2 Channel Galvanic Barrier, Hart Communication, IECEx/ATEX
  • RS Stock No. 808-6538
  • Mfr. Part No. IM33-22EX-HI/24VDC
Subtotal (1 unit)
SGD1,198.41(exc. GST)
SGD1,198.41/unit
Temporarily out of stock
GEORGIN 2 Channel Intrinsic Security Power Supply, IECEx/ATEX
  • RS Stock No. 230-9436
  • Mfr. Part No. BXMT1002
Subtotal (1 box of 1 unit)
SGD785.98(exc. GST)
SGD785.98/box
In Stock
ZDAUTO AOA Series Signal Conditioner, Analogue Output, 5V Supply
  • RS Stock No. 667-756
  • Mfr. Part No. AOA05020D3Ab
Subtotal (1 bag of 25 units)
SGD394.40(exc. GST)
SGD394.40/bag
In Stock
ZDAUTO AI Series Signal Conditioner, 0V dc, 5 V dc Supply
  • RS Stock No. 667-751
  • Mfr. Part No. AIA05020B3
Subtotal (1 bag of 25 units)
SGD330.30(exc. GST)
SGD330.30/bag
In Stock
ZDAUTO AOA Series Signal Conditioner, Analogue Output, 3.3V Supply
  • RS Stock No. 666-100
  • Mfr. Part No. AOA03020D3Ab
Subtotal (1 bag of 25 units)
SGD394.40(exc. GST)
SGD394.40/bag
Stocked by manufacturer
Phoenix Contact 1191 Series Signal Conditioner, Current Input, Voltage Output, 24V Supply
  • RS Stock No. 509-820
  • Mfr. Part No. 1191986
Subtotal (1 unit)
SGD664.78(exc. GST)
SGD664.78/unit
In Stock
Motrona IO Series Signal Converter, PNP Open Collector Output, 18V dc, 30 V dc Supply
  • RS Stock No. 309-395
  • Mfr. Part No. IO223/CO
Subtotal (1 unit)
SGD517.92(exc. GST)
SGD517.92/unit
In Stock
Siemens 3RS7000 Series Signal Conditioner, Voltage Input, Voltage Output, 24V ac/dc Supply
  • RS Stock No. 134-8025
  • Mfr. Part No. 3RS7000-1AE00
Subtotal (1 unit)
SGD422.51(exc. GST)
SGD422.51/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Isolation Amplifier, 30V Supply, ATEX
  • RS Stock No. 212-7323
  • Mfr. Part No. 2924281
Subtotal (1 unit)
SGD331.01(exc. GST)
SGD331.01/unit
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