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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

    894 Products showing for Signal Conditioners & Isolators

    1 of 45
    WAGO Signal Conditioner, RTD, Potentiometer Input, Digital, Relay Output
    • RS Stock No. 135-7399
    • Mfr. Part No. 2857-533
    Each
    PHP16,641.56
    Weidmüller ACT20P Series Signal Converter, Universal Input, Universal Output, 230V Supply, ATEX, IECEx
    • RS Stock No. 287-5511
    • Mfr. Part No. 1481960000
    Each
    PHP19,339.11
    PR Electronics Signal Conditioner
    • RS Stock No. 796-7020
    • Mfr. Part No. 5909
    Each
    PHP18,965.07
    GEORGIN GN 21000 Series Repeater, Current, Voltage Input, Analogue Output
    • RS Stock No. 230-9468
    • Mfr. Part No. GN21000S
    1 Box of 1
    PHP15,864.55
    Phoenix Contact MINI MCR Series Signal Conditioner, RTD Input, Current, Voltage Output, 24V dc Supply
    • RS Stock No. 489-2875
    • Mfr. Part No. 2864273
    Each
    PHP17,945.60
    Motrona ET Series Module, Pulse Input, Analogue Output, 10 → 30V dc Supply
    • RS Stock No. 309-368
    • Mfr. Part No. ET228
    Each
    PHP53,810.20
    PR Electronics Programming Display
    • RS Stock No. 238-0641
    • Mfr. Part No. 4510
    Each
    PHP5,934.95
    Motrona DM Series Analogue Converter, Current, Voltage Input, Current, Voltage Output, 18 → 30V dc Supply
    • RS Stock No. 309-359
    • Mfr. Part No. DM221
    Each
    PHP24,779.08
    Phoenix Contact MINI MCR Series Signal Conditioner, Current, Voltage Input, Frequency Output, 20 → 30V dc Supply
    • RS Stock No. 616-8950
    • Mfr. Part No. 2864082
    Each
    PHP10,371.12
    Phoenix Contact MINI MCR Series Signal Conditioner, Voltage Input, Current, Voltage Output, 24V dc Supply
    • RS Stock No. 616-8938
    • Mfr. Part No. 2865007
    Each
    PHP21,621.60
    Eaton 2 Channel Zener Barrier, Intrinsic Safety Barrier, ATEX
    • RS Stock No. 783-4033
    • Mfr. Part No. MTL7761AC/RS
    Each
    PHP15,485.34
    Weidmüller WAZ5 Series Limit Signal Transmitter, Current Input, Relay Output, 24V dc Supply
    • RS Stock No. 287-5337
    • Mfr. Part No. 8543880000
    Each
    PHP14,786.07
    GEORGIN 1 Channel Intrinsic Security Relay, ATEX
    • RS Stock No. 230-9473
    • Mfr. Part No. RDN100000
    1 Box of 1
    PHP14,192.84
    PR Electronics 3100 Series Isolating Signal Converter, Current, Voltage Input, Current, Voltage Output, 16.8 →
    • RS Stock No. 796-7086
    • Mfr. Part No. 3109
    Each
    PHP18,887.85
    Phoenix Contact MACX MCR Series Signal Conditioner, Current Input, Current Output, 19.2 → 30V dc Supply, ATEX
    • RS Stock No. 195-4826
    • Mfr. Part No. 2924825
    Each
    PHP25,831.54
    Eaton 1 Channel Zener Barrier, Intrinsic Safety Barrier, Analogue Output, ATEX
    • RS Stock No. 612-5335
    • Mfr. Part No. MTL7787+/RS
    Each
    PHP8,796.98
    PR Electronics Signal Conditioner
    • RS Stock No. 827-5378
    • Mfr. Part No. 9410
    Each
    PHP15,978.30
    SICK HN Series Signal Converter, SSI Input, Analogue Output
    • RS Stock No. 285-1754
    • Mfr. Part No. HN.SK20.2
    Each
    PHP59,150.34
    Weidmuller ACT20P Series Signal Conditioner
    • RS Stock No. 892-9003
    • Mfr. Part No. 1510390000
    Each
    PHP7,916.00
    Better World
    Schneider Electric Harmony Analog Series Analogue Converter, Current, Voltage Input, 24V Supply, IECEx
    • RS Stock No. 221-2854
    • Mfr. Part No. RMCN22BD
    Each
    PHP7,525.19
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