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

963 Products showing for Signal Conditioners & Isolators

44 of 49
In Stock
PR Electronics 9200 Series Pulse Isolator, Switch Input, Relay Output, 19.2V dc, 31.2 V dc Supply, UL, Zone, DNV GL,
  • RS Stock No. 827-5366
  • Mfr. Part No. 9202B3A
Subtotal (1 unit)
TWD7,754.00(exc. GST)
TWD7,754.00/unit
In Stock
Weidmüller ACT20P Series Limit Signal Transmitter, Temperature Input, Relay Output, 24V dc Supply
  • RS Stock No. 287-4672
  • Mfr. Part No. 2456840000
Subtotal (1 unit)
TWD17,124.00(exc. GST)
TWD17,124.00/unit
In Stock
PR Electronics 9100 Series Signal Conditioner, Current/Voltage Input, Current Output, 19.2V dc, 31.2 V dc Supply,
  • RS Stock No. 270-1742
  • Mfr. Part No. 9106A1A
Subtotal (1 unit)
TWD12,862.00(exc. GST)
TWD12,862.00/unit
Temporarily out of stock
WAGO 857 Series Signal Conditioner, Temperature Input, Current/Voltage Output, 24V dc Supply, IECEx, ATEX
  • RS Stock No. 279-2540
  • Mfr. Part No. 857-801
Subtotal (1 unit)
TWD10,989.00(exc. GST)
TWD10,989.00/unit
In Stock
ZDAUTO BID Series Signal Conditioner, Digital Input, 5V Supply
  • RS Stock No. 667-747
  • Mfr. Part No. BID0524A1
Subtotal (1 bag of 25 units)
TWD2,690.00(exc. GST)
TWD2,690.00/bag
In Stock
P.M.A 3RS7020 Series Signal Conditioner, Digital, Signal Input, Universal Output, 18 V ac, 30 V ac, 18V dc, 31 V dc
  • RS Stock No. 736-4752
  • Mfr. Part No. SG45-115-00000-000
Subtotal (1 unit)
TWD25,734.00(exc. GST)
TWD25,734.00/unit
In Stock
WAGO 857 Series Signal Conditioner, Current Input, Voltage Output, 24V dc Supply, ATEX, IECEx
  • RS Stock No. 279-2526
  • Mfr. Part No. 857-416
Subtotal (1 unit)
TWD7,131.00(exc. GST)
TWD7,131.00/unit
In Stock
GEORGIN Double Zener Barrier, ATEX
  • RS Stock No. 230-9461
  • Mfr. Part No. BZG788PLUS
Subtotal (1 box of 1 unit)
TWD6,433.00(exc. GST)
TWD6,433.00/box
In Stock
RS PRO BD Series Signal Conditioner, Current Input, Relay Output, 115V ac Supply
  • RS Stock No. 466-2270
Subtotal (1 unit)
TWD5,262.00(exc. GST)
TWD5,262.00/unit
In Stock
RS PRO 9100 Series Signal Conditioner, Current Input, Relay Output, 10V dc, 30 V dc Supply
  • RS Stock No. 218-4447
Subtotal (1 unit)
TWD5,357.00(exc. GST)
TWD5,357.00/unit
In Stock
Phoenix Contact ECM-UC Series Current Measuring Transducer, Current Input, Current/Voltage Output, 24V dc Supply
  • RS Stock No. 498-152
  • Mfr. Part No. 1136513
Subtotal (1 unit)
TWD14,558.00(exc. GST)
TWD14,558.00/unit
In Stock
Idec 3 Channel Zener Barrier, ATEX
  • RS Stock No. 165-6896
  • Mfr. Part No. EB3C-R03AN
Subtotal (1 unit)
TWD8,161.00(exc. GST)
TWD8,161.00/unit
In Stock
GEORGIN Intrinsic Security Power Supply, IECEx/ATEX
  • RS Stock No. 230-9445
  • Mfr. Part No. BXNE412002
Subtotal (1 box of 1 unit)
TWD11,995.00(exc. GST)
TWD11,995.00/box
In Stock
Pepperl + Fuchs S1SD Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 16.8V dc, 31.2 V dc
  • RS Stock No. 134-8132
  • Mfr. Part No. S1SD-1AI-1U.2
Subtotal (1 unit)
TWD8,670.00(exc. GST)
TWD8,670.00/unit
In Stock
Weidmüller ACT20X Series Signal Converter, Voltage Input, Current Output, 31.2V dc Supply, IECEx, ATEX
  • RS Stock No. 287-4668
  • Mfr. Part No. 2456130000
Subtotal (1 unit)
TWD12,969.00(exc. GST)
TWD12,969.00/unit
In Stock
PR Electronics 9100 Series Signal Conditioner, RTD, Thermocouple, Current Input, Current Output, 19.2V dc, 31.2 V dc
  • RS Stock No. 270-1747
  • Mfr. Part No. 9113AB
Subtotal (1 unit)
TWD25,117.00(exc. GST)
TWD25,117.00/unit
In Stock
RS PRO Relay, Current/Voltage Input, 24V Supply
  • RS Stock No. 325-329
Subtotal (1 unit)
TWD18.00(exc. GST)
TWD18.00/unit
Stocked by manufacturer
Phoenix Contact 1329 Series Signal Conditioner, 48V Supply
  • RS Stock No. 497-813
  • Mfr. Part No. 1329817
Subtotal (1 unit)
TWD7,055.00(exc. GST)
TWD7,055.00/unit
In Stock
WAGO Jumpflex Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V dc Supply
  • RS Stock No. 180-3045
  • Mfr. Part No. 857-569
Subtotal (1 unit)
TWD16,500.00(exc. GST)
TWD16,500.00/unit
In Stock
ZDAUTO AOV Series Signal Conditioner, Analogue Output, 3.3V Supply
  • RS Stock No. 666-101
  • Mfr. Part No. AOV03010D3Ab
Subtotal (1 bag of 25 units)
TWD10,516.00(exc. GST)
TWD10,516.00/bag
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