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

1016 Products showing for Signal Conditioners & Isolators

46 of 51
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)
SGD2,993.00(exc. GST)
SGD2,993.00/unit
In Stock
RS PRO Analogue Converter, Current, Voltage Output, 24V ac/dc Supply
  • RS Stock No. 606-325
Subtotal (1 unit)
SGD195.00(exc. GST)
SGD195.00/unit
Currently unavailable
Murrelektronik Limited MTW 12.4 Series Signal Conditioner, 8 Bit Input, Current Output, 0V dc, 30 V dc Supply
  • RS Stock No. 137-0327
  • Mfr. Part No. 44073
Subtotal (1 unit)
SGD348.66(exc. GST)
SGD348.66/unit
Temporarily out of stock
Weidmüller ACT20P Series Signal Converter, Universal Input, Universal Output, 24V dc Supply, IECEx, ATEX
  • RS Stock No. 287-5308
  • Mfr. Part No. 2816690000
Subtotal (1 unit)
SGD515.29(exc. GST)
SGD515.29/unit
Temporarily out of stock
RS PRO Relay, Current/Voltage Input, 5V Supply
  • RS Stock No. 325-335
Subtotal (1 unit)
SGD0.87(exc. GST)
SGD0.87/unit
In Stock
BALLUFF BAE Series Signal Conditioner, PNP Input, PNP Output, 10V dc, 30 V dc Supply
  • RS Stock No. 284-5932
  • Mfr. Part No. BAE012U
Subtotal (1 unit)
SGD164.23(exc. GST)
SGD164.23/unit
In Stock
Murrelektronik Limited Signal Conditioner, Voltage Input, Current/Voltage Output, 18V dc, 32 V dc Supply
  • RS Stock No. 137-0321
  • Mfr. Part No. 7000-31271-0000000
Subtotal (1 unit)
SGD328.34(exc. GST)
SGD328.34/unit
Stocked by manufacturer
Phoenix Contact Galvanic Barrier, ATEX
  • RS Stock No. 751-1383
  • Mfr. Part No. 2865654
Subtotal (1 unit)
SGD914.16(exc. GST)
SGD914.16/unit
In Stock
Endress+Hauser 2 Channel Galvanic Barrier, Zone 2
  • RS Stock No. 288-6547
  • Mfr. Part No. RLN22-8M1A
Subtotal (1 unit)
SGD185.32(exc. GST)
SGD185.32/unit
New product - Preorder today
Motrona DM Series Analogue Converter, Current/Voltage Input, Current/Voltage Output, 18V dc, 30 V dc Supply
  • RS Stock No. 309-359
  • Mfr. Part No. DM221
Subtotal (1 unit)
SGD557.44(exc. GST)
SGD557.44/unit
Stocked by manufacturer
GEORGIN Intrinsic Security Power Supply, ATEX
  • RS Stock No. 230-9449
  • Mfr. Part No. BXNTI6002
Subtotal (1 box of 1 unit)
SGD615.73(exc. GST)
SGD615.73/box
Temporarily out of stock
PR Electronics 3100 Series Signal Conditioner, Current Input, Current Output, 16.8V dc, 31.2 V dc Supply, IECEx, ATEX
  • RS Stock No. 270-1719
  • Mfr. Part No. 3103-N
Subtotal (1 unit)
SGD287.73(exc. GST)
SGD287.73/unit
Temporarily out of stock
RS PRO Relay, Current/Voltage Input, 5V Supply
  • RS Stock No. 325-339
Subtotal (1 unit)
SGD0.87(exc. GST)
SGD0.87/unit
Temporarily out of stock
Weidmüller ACT20X Series Signal Conditioner
  • RS Stock No. 902-8057
  • Mfr. Part No. 1160650000
Subtotal (1 unit)
SGD35.75(exc. GST)
SGD35.75/unit
Stocked by manufacturer
Phoenix Contact MACX MCR Series Signal Conditioner, Voltage, Thermocouple, Potentiometer, RTD Input, Current Output,
  • RS Stock No. 217-6415
  • Mfr. Part No. 2924689
Subtotal (1 unit)
SGD923.39(exc. GST)
SGD923.39/unit
In Stock
RS PRO MACX MCR-VDC Series Signal Conditioner, Current Input, Current Output, Groups A, C, B, Div 2, D, Class I
  • RS Stock No. 794-8580
Subtotal (1 unit)
SGD265.21(exc. GST)
SGD265.21/unit
In Stock
EYC EYC DPT02 Series Signal Conditioner, Universal Input, 253V ac, 85 V ac Supply
  • RS Stock No. 144-1339
  • Mfr. Part No. DPT02-C
Subtotal (1 unit)
SGD322.66(exc. GST)
SGD322.66/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)
SGD324.45(exc. GST)
SGD324.45/unit
Temporarily out of stock
RS PRO Relay, Relay Output, 24V Supply
  • RS Stock No. 325-338
Subtotal (1 unit)
SGD0.87(exc. GST)
SGD0.87/unit
In Stock
Motrona GV Series Signal Conditioner, Pulse Input, Push Pull Output, 10V dc, 30 V dc Supply
  • RS Stock No. 309-381
  • Mfr. Part No. GV228
Subtotal (1 unit)
SGD965.55(exc. GST)
SGD965.55/unit
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