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

11 of 49
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current/Voltage Input, Relay Output, 24V dc Supply, ATEX
  • RS Stock No. 489-2831
  • Mfr. Part No. 2864480
Subtotal (1 unit)
TWD9,701.00(exc. GST)
TWD9,701.00/unit
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Voltage Input, Current/Voltage Output, 24V dc Supply, Div 2, Groups
  • RS Stock No. 616-8938
  • Mfr. Part No. 2865007
Subtotal (1 unit)
TWD12,036.00(exc. GST)
TWD12,036.00/unit
In Stock
Motrona FP Series Signal Converter, Universal Input, RS422 Output, 30V Supply, EN IEC 63000
  • RS Stock No. 719-382
  • Mfr. Part No. FP210
Subtotal (1 unit)
TWD14,927.00(exc. GST)
TWD14,927.00/unit
In Stock
Endress+Hauser 2 Channel Galvanic Barrier, Relay, Ex
  • RS Stock No. 256-6199
  • Mfr. Part No. RLN22-8M2A+LA
Subtotal (1 unit)
TWD6,478.00(exc. GST)
TWD6,478.00/unit
In Stock
Phoenix Contact 3RS7025 Series Signal Conditioner, Thermocouple Input, Current/Voltage Output, 30V dc, 9.6 V dc Supply,
  • RS Stock No. 785-7783
  • Mfr. Part No. 2902851
Subtotal (1 unit)
TWD9,846.00(exc. GST)
TWD9,846.00/unit
Stocked by manufacturer
Phoenix Contact Signal Conditioner, ATEX, IECEx
  • RS Stock No. 196-0435
  • Mfr. Part No. 2924236
Subtotal (1 unit)
TWD17,860.00(exc. GST)
TWD17,860.00/unit
In Stock
Siemens 3RS7003 Series Signal Conditioner, Current Input, Current Output, 24V ac/dc Supply
  • RS Stock No. 134-8040
  • Mfr. Part No. 3RS7003-1DE00
Subtotal (1 unit)
TWD11,713.00(exc. GST)
TWD11,713.00/unit
In Stock
Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
  • RS Stock No. 280-6608
  • Mfr. Part No. Z 960
Subtotal (1 unit)
TWD5,140.00(exc. GST)
TWD5,140.00/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
In Stock
Endress+Hauser 2 Channel Galvanic Barrier, Zone 2
  • RS Stock No. 288-6003
  • Mfr. Part No. RN22-CB2B
Subtotal (1 unit)
TWD10,832.00(exc. GST)
TWD10,832.00/unit
Stocked by manufacturer
Phoenix Contact SCK Series Monitoring Relay
  • RS Stock No. 181-2033
  • Mfr. Part No. 2903242
Subtotal (1 unit)
TWD9,666.00(exc. GST)
TWD9,666.00/unit
In Stock
Murrelektronik Limited MTW 12.4 Series Signal Conditioner, Frequency Input, Current/Voltage Output, 10V dc, 30 V dc
  • RS Stock No. 137-0331
  • Mfr. Part No. 44275
Subtotal (1 unit)
TWD8,205.00(exc. GST)
TWD8,205.00/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
Lumel P30H Series Signal Transducer, Current/Voltage Input, Analogue Output
  • RS Stock No. 173-532
  • Mfr. Part No. P30H 1021200M0
Subtotal (1 unit)
TWD19,176.00(exc. GST)
TWD19,176.00/unit
In Stock
Weidmüller ACT20X Series Signal Converter, Voltage Input, Current Output, 24V dc Supply, ATEX, IECEx
  • RS Stock No. 287-4666
  • Mfr. Part No. 2456120000
Subtotal (1 unit)
TWD9,137.00(exc. GST)
TWD9,137.00/unit
In Stock
RS PRO Relay, Current/Voltage Input, 12V Supply
  • RS Stock No. 325-327
Subtotal (1 unit)
TWD17.00(exc. GST)
TWD17.00/unit
In Stock
Turck Galvanic Barrier, IECEx/ATEX
  • RS Stock No. 808-6550
  • Mfr. Part No. IM21-14EX-CDTRI
Subtotal (1 unit)
TWD27,465.00(exc. GST)
TWD27,465.00/unit
Stocked by manufacturer
Siemens 3RS7003 Series Signal Conditioner, Current Input, Current Output, 24V ac/dc Supply
  • RS Stock No. 134-8042
  • Mfr. Part No. 3RS7003-2CE00
Subtotal (1 unit)
TWD12,265.00(exc. GST)
TWD12,265.00/unit
In Stock
PR Electronics 4100 Series Universal Transmitter, Universal Input, Current/Voltage Output, 21.6 V ac, 253 V ac, 19.2V
  • RS Stock No. 796-6887
  • Mfr. Part No. 4114
Subtotal (1 unit)
TWD9,456.00(exc. GST)
TWD9,456.00/unit
In Stock
Idec 6 Channel Zener Barrier, ATEX
  • RS Stock No. 165-6897
  • Mfr. Part No. EB3C-R06AN
Subtotal (1 unit)
TWD14,290.00(exc. GST)
TWD14,290.00/unit
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