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    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

    921 Products showing for Signal Conditioners & Isolators

    1 of 47
    Phoenix Contact 3RS7003 Series Signal Conditioner, Current, Voltage Input, Current Output, 24V dc Supply, ATEX
    • RS Stock No. 489-2881
    • Mfr. Part No. 2864176
    Each
    HK$3,069.40
    GEORGIN 1 Channel Intrinsic Security Power Supply, ATEX
    • RS Stock No. 229-9237
    • Mfr. Part No. BXNE3710EE
    1 Box of 1
    HK$2,468.83
    Phoenix Contact MACX MCR Series Signal Conditioner, Current Input, Current Output, <30.5V Supply, ATEX
    • RS Stock No. 122-9817
    • Mfr. Part No. 2905278
    Each
    HK$1,669.00
    Eaton MTL5000/5500 Series Connecting Cable, ATEX
    • RS Stock No. 612-5357
    • Mfr. Part No. PCL45-USB/RS
    Each
    HK$3,737.10
    Eaton 1 Channel Zener Barrier, Switch/Proximity Detector Interface, NAMUR Sensor, Switch Input, Relay Output, ATEX
    • RS Stock No. 703-7043
    • Mfr. Part No. MTL5511/RS
    Each
    HK$2,974.70
    PR Electronics 4 Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 19.2 → 300 V dc,
    • RS Stock No. 136-8711
    • Mfr. Part No. 4104
    Each
    HK$1,950.50
    Eaton 1 Channel Zener Barrier, Isolated Driver, Current Input, Current Output, ATEX
    • RS Stock No. 703-7068
    • Mfr. Part No. MTL5546/RS
    Each
    HK$3,798.90
    PR Electronics 9100 Series Temperature Converter, Current, RTD, Thermocouple Input, Current, Relay Output, 19.2
    • RS Stock No. 796-7048
    • Mfr. Part No. 9113BB
    Each
    HK$5,040.60
    Phoenix Contact 1 Channel Galvanic Barrier, Repeater power supply, Current Input, Current Output, ATEX
    • RS Stock No. 751-1314
    • Mfr. Part No. 2865793
    Each
    HK$2,658.70
    PR Electronics 6185 Series Loop Powered Isolator, Current Input, Current Output
    • RS Stock No. 796-6948
    • Mfr. Part No. 6185D
    Each
    HK$4,104.28
    Phoenix Contact PSM-ME Series Signal Conditioner, RS-485 Input, RS-485 Output, 24V ac/dc Supply, ATEX
    • RS Stock No. 370-7669
    • Mfr. Part No. 2744429
    Each
    HK$3,432.90
    PR Electronics 4100 Series Universal Transmitter, Universal Input, Current, Voltage, Relay Output, 19.2 → 300 V
    • RS Stock No. 796-6884
    • Mfr. Part No. 4116
    Each
    HK$2,947.80
    Phoenix Contact MINI MCR Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24V dc Supply, ATEX
    • RS Stock No. 134-8669
    • Mfr. Part No. 2905026
    Each
    HK$2,051.00
    Eaton 1 Channel Galvanic Barrier, Current, Pluse, Voltage Input, ATEX
    • RS Stock No. 174-7911
    • Mfr. Part No. MTL5532
    Each
    HK$4,278.10
    Siemens 3RS7000 Series Signal Conditioner, Voltage Input, Current Output, 24V ac/dc Supply
    • RS Stock No. 134-8027
    • Mfr. Part No. 3RS7000-1DE00
    Each
    HK$2,190.20
    Eaton MTL Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 18 → 32V dc Supply
    • RS Stock No. 144-8694
    • Mfr. Part No. MTL1249
    Each
    HK$2,015.80
    Siemens 3RS7000 Series Signal Conditioner, Voltage Input, Current Output, 24V ac/dc Supply
    • RS Stock No. 134-8030
    • Mfr. Part No. 3RS7000-2DE00
    Each
    HK$2,136.10
    Siemens 3RS7006 Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24V ac/dc Supply
    • RS Stock No. 134-8054
    • Mfr. Part No. 3RS7006-2FE00
    Each
    HK$3,839.00
    Siemens 3RS7006 Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24V ac/dc Supply
    • RS Stock No. 134-8052
    • Mfr. Part No. 3RS7006-1FE00
    Each
    HK$3,899.90
    Phoenix Contact 3RS7025 Series Signal Conditioner, Voltage Input, Voltage Output, 9.6 → 30V dc Supply
    • RS Stock No. 764-9637
    • Mfr. Part No. 2902822
    Each
    HK$1,272.70
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