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Relays & Signal Conditioning

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

Zener & Galvanic Barriers

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1017 Products showing for Signal Conditioners & Isolators

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Weidmüller ACT20P Series Signal Converter, Current Input, Current Output, 30V Supply, ATEX, IECEx

RS Stock No. 287-5326
Mfr. Part No. 7760054122

Brand Weidmüller
Module Type Signal Converter
Input Signal Type Current
Output Signal Type Current
Input Range 4 → 20mA

Each

$303.56(exc. GST)

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GEORGIN GN 25000 Series Isolation Amplifier, Current, Voltage Input, Analogue Output

RS Stock No. 230-9469
Mfr. Part No. GN25000S

Brand GEORGIN
Input Signal Type Current, Voltage
Output Signal Type Analogue
Input Range 0 → 10 V, 0 → 20mA
Series GN 25000

1 Box of 1

$383.15(exc. GST)

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PR Electronics Programming Display

RS Stock No. 238-0641
Mfr. Part No. 4510

Brand PR Electronics

Each

$196.06(exc. GST)

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Endress+Hauser 2 Channel Galvanic Barrier, Galvanic Barrier/Isolator, Current Input, 0/4 to 20 mA Output, SIL 2, Zone 2

RS Stock No. 288-6002
Mfr. Part No. RN22-BE1B

Brand Endress+Hauser
Number of Channels 2
Module Type Galvanic Barrier/Isolator
Barrier Type Galvanic Barrier
Output Signal Type 0/4 to 20 mA

Each

$409.79(exc. GST)

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Siemens 3RS7020 Series Signal Conditioner, Current Input, Current Output

RS Stock No. 134-8056
Mfr. Part No. 3RS7020-1ET00

Brand Siemens
Module Type Loop Powered Isolator
Input Signal Type Current
Output Signal Type Current
Input Range 4 → 20mA

Each

$274.00(exc. GST)

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Phoenix Contact MACX MCR-PTB-SP Series Signal Conditioner, Voltage Input, Relay Output, ATEX

RS Stock No. 207-3415
Mfr. Part No. 2924184

Brand Phoenix Contact
Module Type Fault Monitoring Module
Input Signal Type Voltage
Output Signal Type Relay
Input Range 19.2 → 30V dc

Each

$255.27(exc. GST)

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GEORGIN GC 52100 Series Power Supply Repeater, Current, Voltage Input, Analogue Output

RS Stock No. 230-9464
Mfr. Part No. GC52100S

Brand GEORGIN
Input Signal Type Current, Voltage
Output Signal Type Analogue
Input Range 0 → 10 V, 0 → 20mA
Series GC 52100

1 Box of 1

$363.98(exc. GST)

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GIC Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24V dc Supply

RS Stock No. 884-2458
Mfr. Part No. 2SC3D11CC3

Brand GIC
Module Type Signal Isolator
Input Signal Type Current, Voltage
Output Signal Type Current, Voltage
Input Range 0 → 10 V dc, 0 → 20 mA, 2 → 10 V dc, 4 → 20mA

Each

$126.26(exc. GST)

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Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Current Output, 9.6 → 30V dc Supply, ATEX

RS Stock No. 134-8671
Mfr. Part No. 2901994

Brand Phoenix Contact
Module Type Loop Powered Isolator
Input Signal Type Current
Output Signal Type Current
Input Range 0 → 20 mA, 4 → 20mA

Each

$257.44(exc. GST)

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Weidmüller ACT20P Series Limit Signal Transmitter, Voltage Input, Relay Output, 240V Supply

RS Stock No. 287-5330
Mfr. Part No. 7760054164

Brand Weidmüller
Module Type Limit Value Switch
Input Signal Type Voltage
Output Signal Type Relay
Input Range 110 / 240 / 400V ac/dc

Each

$340.04(exc. GST)

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Lumel P17G Series Passive Isolator, Current Input, Current Output

RS Stock No. 173-531
Mfr. Part No. P17G 000

Brand Lumel
Module Type Passive loop Isolator
Input Signal Type Current
Output Signal Type Current
Input Range 0 → 20mA

Each

$208.23(exc. GST)

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Endress+Hauser 1 Channel Galvanic Barrier, Isolating Amplifier, NAMUR Sensor, Switch Input

RS Stock No. 256-6200
Mfr. Part No. RLN22-AA1A

Brand Endress+Hauser
Number of Channels 1
Module Type Isolating Amplifier
Barrier Type Galvanic Barrier
Input Signal Type NAMUR Sensor, Switch

Each

$218.48(exc. GST)

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Eaton 1 Channel Zener Barrier, Solenoid Driver, Current Input, Current Output, ATEX

RS Stock No. 703-7059
Mfr. Part No. MTL5521/RS

Brand Eaton
Number of Channels 1
Module Type Solenoid Driver
Barrier Type Galvanic Barrier
Output Signal Type Current

Each

$402.42(exc. GST)

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Eaton 3 Channel Zener Barrier, Intrinsic Safety Barrier, RTD, Thermocouple Input, ATEX

RS Stock No. 612-5329
Mfr. Part No. MTL7756AC/RS

Brand Eaton
Number of Channels 3
Module Type Intrinsic Safety Barrier
Barrier Type Zener Barrier
Maximum Voltage 2.7V dc

Each

$665.49(exc. GST)

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Red Lion 3RS7003 Series Signal Conditioner, RS-232 Input, RS-422, RS-485 Output, 9 → 26V dc Supply

RS Stock No. 435-0753
Mfr. Part No. ICM50000

Brand Red Lion
Module Type Interface Converter
Input Signal Type RS-232
Output Signal Type RS-422, RS-485
Supply Voltage 9 → 26V dc

Each

$571.74(exc. GST)

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JM CONCEPT ULCOS 900 Series Universal Signal Converter, Current, Voltage, Potentiometer Signal, Resistance,

RS Stock No. 232-8253
Mfr. Part No. ULCOS900D1

Brand JM CONCEPT
Module Type Universal Signal Converter
Input Signal Type Current, Voltage, Potentiometer Signal, Resistance, Temperature, Thermocouple
Output Signal Type Current, Voltage
Input Range Mo, P, PT100, PT1000, TC-B, TC-E, TC-J, TC-K, TC-N, TC-R, TC-S, TC-T, W3/D, W5/C, 0 → 100kohm, 0 → 470ohm, 0-10V, 0-100mv, 0 → 22mA