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

977 Products showing for Signal Conditioners & Isolators

4 of 49
In Stock
PR Electronics 3100 Series Loop Powered Isolator, Current Input, Current Output, ATEX
  • RS Stock No. 796-7105
  • Mfr. Part No. 3185A2
Subtotal (1 unit)
TWD7,025.00(exc. GST)
TWD7,025.00/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)
TWD20,041.00(exc. GST)
TWD20,041.00/box
In Stock
Phoenix Contact 3RS7003 Series Signal Conditioner, Current Input, Voltage Output, 24V dc Supply
  • RS Stock No. 622-3215
  • Mfr. Part No. 2813538
Subtotal (1 unit)
TWD8,192.00(exc. GST)
TWD8,192.00/unit
In Stock
PR Electronics 9100 Series Universal Converter, Universal Input, Current, Relay Output, 19.2V dc, 31.2 V dc Supply, ATEX
  • RS Stock No. 796-7042
  • Mfr. Part No. 9116B1
Subtotal (1 unit)
TWD19,630.00(exc. GST)
TWD19,630.00/unit
In Stock
Eaton Zener Barrier, ATEX
  • RS Stock No. 612-5307
  • Mfr. Part No. MTL7741/RS
Subtotal (1 unit)
TWD6,003.00(exc. GST)
TWD6,003.00/unit
In Stock
Weidmüller ACT20M Series Signal Conditioner, Thermocouple Input, Voltage, Current Output, 24V dc Supply, ATEX, FM Div2
  • RS Stock No. 892-8969
  • Mfr. Part No. 1375480000
Subtotal (1 unit)
TWD5,679.00(exc. GST)
TWD5,679.00/unit
Stocked by manufacturer
Phoenix Contact MACX Series Temperature Transducer, Temperature Input, Current Output, 11V dc, 36 V dc Supply
  • RS Stock No. 282-4662
  • Mfr. Part No. 1145192
Subtotal (1 unit)
TWD14,189.00(exc. GST)
TWD14,189.00/unit
Temporarily out of stock
Eaton MTL Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 18V dc, 32 V dc Supply
  • RS Stock No. 144-8693
  • Mfr. Part No. MTL1211
Subtotal (1 unit)
TWD6,417.00(exc. GST)
TWD6,417.00/unit
Temporarily out of stock
RS PRO 3100 Series Signal Conditioner, CE
  • RS Stock No. 794-8542
Subtotal (1 unit)
TWD8,151.00(exc. GST)
TWD8,151.00/unit
In Stock
PR Electronics 5 Series Signal Conditioner, Current Input, Voltage Output, 21.6V, 253 V Supply, ATEX
  • RS Stock No. 796-6904
  • Mfr. Part No. 5114AA
Subtotal (1 unit)
TWD16,741.00(exc. GST)
TWD16,741.00/unit
Temporarily out of stock
RS PRO BD Series Signal Conditioner, Current/Voltage Input, Relay Output, 230V ac Supply
  • RS Stock No. 466-2400
Subtotal (1 unit)
TWD7,062.00(exc. GST)
TWD7,062.00/unit
In Stock
WAGO 857 Series Signal Conditioner, Frequency Input, Current/Voltage Output, 24V dc Supply, IECEx, ATEX
  • RS Stock No. 279-2528
  • Mfr. Part No. 857-500
Subtotal (1 unit)
TWD11,013.00(exc. GST)
TWD11,013.00/unit
In Stock
Phoenix Contact MINI MCR-2-UI-REL-PT Series Limit Switch Signal Conditioner, Voltage Output, 24V Supply, ATEX
  • RS Stock No. 890-3875
  • Mfr. Part No. 2902035
Subtotal (1 unit)
TWD6,795.00(exc. GST)
TWD6,795.00/unit
Stocked by manufacturer
Phoenix Contact 2904931 Series Signal Conditioner, Current Input, Current Output, 24V dc Supply, ATEX
  • RS Stock No. 522-382
  • Mfr. Part No. 2904931
Subtotal (1 unit)
TWD15,264.00(exc. GST)
TWD15,264.00/unit
In Stock
Phoenix Contact MACX MCR Series Signal Conditioner, Current Input, Current Output, 30V dc, 9.6 V dc Supply, ATEX
  • RS Stock No. 174-3473
  • Mfr. Part No. 2905628
Subtotal (1 unit)
TWD6,696.00(exc. GST)
TWD6,696.00/unit
Temporarily out of stock
RS PRO Relay, Current/Voltage Input, 5V Supply
  • RS Stock No. 325-335
Subtotal (1 unit)
TWD22.00(exc. GST)
TWD22.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Isolation Amplifier, Voltage Input, Voltage Output, 8V dc Supply, ATEX
  • RS Stock No. 254-4812
  • Mfr. Part No. 2865052
Subtotal (1 unit)
TWD7,708.00(exc. GST)
TWD7,708.00/unit
Temporarily out of stock
Endress+Hauser 2 Channel Zener Barrier, ATEX
  • RS Stock No. 316-256
  • Mfr. Part No. RN22-8L2BPA
Subtotal (1 unit)
TWD11,130.00(exc. GST)
TWD11,130.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR-PTB-SP Series Signal Conditioner, Voltage Input, Relay Output, 24V dc Supply, ATEX
  • RS Stock No. 207-3415
  • Mfr. Part No. 2924184
Subtotal (1 unit)
TWD4,785.00(exc. GST)
TWD4,785.00/unit
Temporarily out of stock
Phoenix Contact ECM-UC Series Current Measuring Transducer, Current Input, Current/Voltage Output, 24V dc Supply
  • RS Stock No. 521-332
  • Mfr. Part No. 1136504
Subtotal (1 unit)
TWD13,375.00(exc. GST)
TWD13,375.00/unit
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