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

14 of 49
In Stock
PR Electronics 3100 Series Signal Conditioner, Temperature Input, Current/Voltage Output, 16.8V dc, 31.2 V dc Supply,
  • RS Stock No. 270-1724
  • Mfr. Part No. 3111-N
Subtotal (1 unit)
TWD7,126.00(exc. GST)
TWD7,126.00/unit
Temporarily out of stock
PR Electronics 3100 Series Signal Conditioner, Temperature Input, Current Output, 16.8V dc, 31.2 V dc Supply, IECEx,
  • RS Stock No. 270-1726
  • Mfr. Part No. 3113-N
Subtotal (1 unit)
TWD10,622.00(exc. GST)
TWD10,622.00/unit
In Stock
PR Electronics 9200 Series Signal Conditioner, Switch Input, Relay, NPN Output, 19.2V dc, 31.2 V dc Supply, IECEx/ATEX
  • RS Stock No. 270-1750
  • Mfr. Part No. 9202A1A
Subtotal (1 unit)
TWD6,812.00(exc. GST)
TWD6,812.00/unit
Temporarily out of stock
PR Electronics 3100 Series Signal Conditioner, Current Input, Current Output, 16.8V dc, 31.2 V dc Supply, ATEX, IECEx
  • RS Stock No. 270-1721
  • Mfr. Part No. 3105-N
Subtotal (1 unit)
TWD6,856.00(exc. GST)
TWD6,856.00/unit
In Stock
CEWE Instruments DPT643 Series Signal Conditioning, 276V Supply
  • RS Stock No. 559-620
  • Mfr. Part No. DPT643-12F
Subtotal (1 unit)
TWD14,924.00(exc. GST)
TWD14,924.00/unit
Temporarily out of stock
Eaton MTL Series Signal Conditioner, Voltage Input, Voltage Output, 20V dc, 35 V dc Supply, Zone 0, IIC, Group A, Div 1,
  • RS Stock No. 174-7910
  • Mfr. Part No. MTL5524
Subtotal (1 unit)
TWD12,850.00(exc. GST)
TWD12,850.00/unit
Stocked by manufacturer
Phoenix Contact MINI MCR Series Signal Conditioner, Voltage Input, Current/Voltage Output, 30V dc, 9.6 V dc Supply, ATEX
  • RS Stock No. 134-8691
  • Mfr. Part No. 2902064
Subtotal (1 unit)
TWD5,445.00(exc. GST)
TWD5,445.00/unit
In Stock
ZDAUTO AOV Series Signal Conditioner, Analogue Output, 5V Supply
  • RS Stock No. 666-086
  • Mfr. Part No. AOV05010D3Ab
Subtotal (1 bag of 25 units)
TWD10,516.00(exc. GST)
TWD10,516.00/bag
In Stock
Weidmüller ACT20P Series Signal Converter, Current Input, Voltage Output, 30V dc Supply, ATEX, IECEx
  • RS Stock No. 287-4696
  • Mfr. Part No. 2489740000
Subtotal (1 unit)
TWD8,704.00(exc. GST)
TWD8,704.00/unit
Stocked by manufacturer
Siemens 3RS7002 Series Signal Conditioner, Current Input, Current Output, 24V ac/dc Supply
  • RS Stock No. 134-8035
  • Mfr. Part No. 3RS7002-2CE00
Subtotal (1 unit)
TWD12,434.00(exc. GST)
TWD12,434.00/unit
Temporarily out of stock
Weidmüller ACT20P Series Signal Converter, Voltage Input, Voltage Output, 24V dc Supply
  • RS Stock No. 287-5329
  • Mfr. Part No. 7760054131
Subtotal (1 unit)
TWD6,987.00(exc. GST)
TWD6,987.00/unit
Stocked by manufacturer
Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Current Output, 30V dc, 6 V dc Supply, II 3 G Ex ec
  • RS Stock No. 134-8675
  • Mfr. Part No. 2906446
Subtotal (1 unit)
TWD6,282.00(exc. GST)
TWD6,282.00/unit
Stocked by manufacturer
P.M.A CI45 Series Signal Conditioner, Universal Input, Universal Output, 260V ac, 90 V ac Supply
  • RS Stock No. 736-5045
  • Mfr. Part No. CI45-114-01000-000
Subtotal (1 unit)
TWD28,982.00(exc. GST)
TWD28,982.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR-SL-RPSS-2I-2I-SP Series Signal Conditioner, Current Input, Current Output, 30V Supply, ATEX
  • RS Stock No. 207-3305
  • Mfr. Part No. 2904090
Subtotal (1 unit)
TWD14,033.00(exc. GST)
TWD14,033.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Signal Conditioner, Voltage Input, Voltage, Resistance Output, IECEx/ATEX
  • RS Stock No. 201-5440
  • Mfr. Part No. 2924100
Subtotal (1 unit)
TWD7,900.00(exc. GST)
TWD7,900.00/unit
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Voltage Input, Current Output, 30V dc, 9.6 V dc Supply, cUL, cULus,
  • RS Stock No. 849-6323
  • Mfr. Part No. 2902022
Subtotal (1 unit)
TWD6,197.00(exc. GST)
TWD6,197.00/unit
In Stock
Endress+Hauser RN22 Series Signal Conditioner
  • RS Stock No. 256-6208
  • Mfr. Part No. RN42-AA1AO
Subtotal (1 unit)
TWD7,526.00(exc. GST)
TWD7,526.00/unit
In Stock
PR Electronics 3200 Series Signal Conditioner, Switch Input, NPN, Relay Output, 16.8V dc, 31.2 V dc Supply, IECEx/ATEX
  • RS Stock No. 270-1735
  • Mfr. Part No. 3202A2-N
Subtotal (1 unit)
TWD6,722.00(exc. GST)
TWD6,722.00/unit
In Stock
ZDAUTO AI Series Signal Conditioner, 5V Supply
  • RS Stock No. 667-755
  • Mfr. Part No. AIV05010B3
Subtotal (1 bag of 25 units)
TWD9,492.00(exc. GST)
TWD9,492.00/bag
Stocked by manufacturer
Phoenix Contact MINI MCR Series Signal Conditioner, Thermocouple, RTD Input, Transistor Output, 24V dc Supply, ATEX
  • RS Stock No. 134-8688
  • Mfr. Part No. 2906876
Subtotal (1 unit)
TWD7,028.00(exc. GST)
TWD7,028.00/unit
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