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

6 of 49
Temporarily out of 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)
TWD16,468.00(exc. GST)
TWD16,468.00/unit
In Stock
Eaton MTL Series Signal Conditioner, Voltage Input, Voltage Output, 20V dc, 35 V dc Supply, Zone 0, IIC, T4 to 6, Group
  • RS Stock No. 174-7908
  • Mfr. Part No. MTL5525
Subtotal (1 unit)
TWD10,436.00(exc. GST)
TWD10,436.00/unit
Stocked by manufacturer
Phoenix Contact PSI Series Fibre Optic Converter, 24V dc Supply, ATEX
  • RS Stock No. 131-116
  • Mfr. Part No. 2708575
Subtotal (1 unit)
TWD66,567.00(exc. GST)
TWD66,567.00/unit
In Stock
CEWE Instruments DPT723 Series Signal Conditioning, 276V Supply
  • RS Stock No. 559-618
  • Mfr. Part No. DPT723-12F
Subtotal (1 unit)
TWD16,134.00(exc. GST)
TWD16,134.00/unit
In Stock
Eaton 2 Channel Zener Barrier, ATEX
  • RS Stock No. 783-4030
  • Mfr. Part No. MTL7789PLUS/RS
Subtotal (1 unit)
TWD9,045.00(exc. GST)
TWD9,045.00/unit
Stocked by manufacturer
Siemens 3RS7006 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V ac/dc, 240 V ac/dc Supply
  • RS Stock No. 134-8055
  • Mfr. Part No. 3RS7006-2FW00
Subtotal (1 unit)
TWD25,146.00(exc. GST)
TWD25,146.00/unit
In Stock
PR Electronics 4100 Series Universal Transmitter, Universal Input, Relay Output, 21.6 V ac, 253 V ac, 19.2V dc, 300 V dc
  • RS Stock No. 796-6913
  • Mfr. Part No. 4131
Subtotal (1 unit)
TWD8,830.00(exc. GST)
TWD8,830.00/unit
Temporarily out of stock
Red Lion IAMS Series Signal Conditioner, Voltage, Current, Thermocouple, RTD, Linear Resistance, Potentiometer Input,
  • RS Stock No. 276-9859
  • Mfr. Part No. IAMS0002
Subtotal (1 unit)
TWD13,644.00(exc. GST)
TWD13,644.00/unit
In Stock
Phoenix Contact MACX MCR Series Signal Conditioner, Voltage Input, Current/Voltage Output, 24V dc Supply
  • RS Stock No. 171-7044
  • Mfr. Part No. 2906244
Subtotal (1 unit)
TWD14,799.00(exc. GST)
TWD14,799.00/unit
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Current Output, 24V dc Supply, Class I, B, D T5, Div
  • RS Stock No. 532-9974
  • Mfr. Part No. 2864422
Subtotal (1 unit)
TWD9,180.00(exc. GST)
TWD9,180.00/unit
In Stock
Phoenix Contact 3RS7025 Series Signal Conditioner, Voltage Input, Voltage Output, 30V dc, 9.6 V dc Supply
  • RS Stock No. 764-9637
  • Mfr. Part No. 2902822
Subtotal (1 unit)
TWD5,458.00(exc. GST)
TWD5,458.00/unit
In Stock
Phoenix Contact MACX MCR Series Signal Conditioner, Voltage Input, Current/Voltage Output, 24V dc Supply
  • RS Stock No. 171-7041
  • Mfr. Part No. 2906239
Subtotal (1 unit)
TWD14,346.00(exc. GST)
TWD14,346.00/unit
Stocked by manufacturer
Phoenix Contact MACX MCR-EX-SL-SD-21-25-LFD-SP Series Signal Conditioner, Transistor Output, 30V Supply, ATEX
  • RS Stock No. 207-3315
  • Mfr. Part No. 2905674
Subtotal (1 unit)
TWD10,216.00(exc. GST)
TWD10,216.00/unit
Stocked by manufacturer
ifm electronic DP2 Series Pulse Module, Digital Input, PNP Output, 24V dc Supply
  • RS Stock No. 723-143
  • Mfr. Part No. DP2402
Subtotal (1 unit)
TWD7,232.00(exc. GST)
TWD7,232.00/unit
Stocked by manufacturer
Phoenix Contact 2908065 Series Signal Conditioner, Current Input, Current Output, 24V dc Supply, ATEX
  • RS Stock No. 518-333
  • Mfr. Part No. 2908066
Subtotal (1 unit)
TWD15,264.00(exc. GST)
TWD15,264.00/unit
Stocked by manufacturer
Phoenix Contact Galvanic Barrier, ATEX
  • RS Stock No. 751-1364
  • Mfr. Part No. 2924139
Subtotal (1 unit)
TWD7,236.00(exc. GST)
TWD7,236.00/unit
Stocked by manufacturer
Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Current Output, 30V dc, 9.6 V dc Supply, ATEX
  • RS Stock No. 175-0487
  • Mfr. Part No. 2906447
Subtotal (1 unit)
TWD6,063.00(exc. GST)
TWD6,063.00/unit
In Stock
RS PRO 2 Channel Zener Barrier, Digital, IECEx/ATEX
  • RS Stock No. 329-088
Subtotal (1 unit)
TWD8,353.00(exc. GST)
TWD8,353.00/unit
In Stock
Eaton Galvanic Barrier, Analogue, ATEX
  • RS Stock No. 174-7911
  • Mfr. Part No. MTL5532
Subtotal (1 unit)
TWD18,234.00(exc. GST)
TWD18,234.00/unit
In Stock
Weidmüller ACT20M Series Temperature Converter, Temperature Input, Current Output, 24V dc Supply, FM, IECEx, ATEX
  • RS Stock No. 287-5477
  • Mfr. Part No. 1375510000
Subtotal (1 unit)
TWD4,906.00(exc. GST)
TWD4,906.00/unit
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