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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

    898 Products showing for Signal Conditioners & Isolators

    1 of 45
    Lumel P17G Series Passive Isolator, Current Input, Current Output
    • RS Stock No. 173-531
    • Mfr. Part No. P17G 000
    Each
    $217.79
    Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
    • RS Stock No. 793-4310
    • Mfr. Part No. 261549
    Each
    $354.87
    PR Electronics 9200 Series Signal Conditioner, NAMUR Sensor, Switch Input, NPN, Relay Output, 19.2 → 31.2V dc
    • RS Stock No. 270-1750
    • Mfr. Part No. 9202A1A
    Each
    $409.78
    PR Electronics Signal Conditioner
    • RS Stock No. 796-7111
    • Mfr. Part No. 3405
    Each
    $197.95
    RS PRO Signal Conditioner, Current Input, Current Output
    • RS Stock No. 192-3391
    Each
    $236.93
    PR Electronics 9200 Series Pulse Isolator, NAMUR Sensor, Switch Input, Relay Output, 19.2 → 31.2V dc Supply, ATEX
    • RS Stock No. 796-7051
    • Mfr. Part No. 9202B1A
    Each
    $386.25
    Turck Module
    • RS Stock No. 808-6594
    • Mfr. Part No. WM1
    Each
    $31.83
    Pepperl + Fuchs Signal Conditioner
    • RS Stock No. 134-8140
    • Mfr. Part No. S-ADP-USB
    Each
    $308.92
    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
    $214.90
    PR Electronics MINI MCR-SL-IDS-I-I Series Signal Conditioner, Current Input, Current Output, ATEX
    • RS Stock No. 796-7102
    • Mfr. Part No. 3185A1
    Each
    $280.17
    Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
    • RS Stock No. 793-4304
    • Mfr. Part No. 261551
    Each
    $319.32
    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
    $308.55
    PR Electronics Signal Conditioner
    • RS Stock No. 796-7014
    • Mfr. Part No. 4511
    Each
    $280.14
    RS PRO Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24 → 240V ac/dc Supply
    • RS Stock No. 192-3397
    Each
    $399.51
    Weidmuller ACT20P Series Signal Transducer, Current Input, Current Output, 31.2V Supply
    • RS Stock No. 892-9000
    • Mfr. Part No. 1510440000
    Each
    $316.08
    RS PRO Signal Conditioner, Current Input, Current Output
    • RS Stock No. 794-8577
    Each
    $122.21
    PR Electronics Signal Conditioner
    • RS Stock No. 827-5378
    • Mfr. Part No. 9410
    Each
    $462.80
    Eaton 2 Channel Zener Barrier, Intrinsic Safety Barrier, ATEX
    • RS Stock No. 783-4033
    • Mfr. Part No. MTL7761AC/RS
    Each
    $297.18
    Murrelektronik Limited Signal Conditioner, Current, Voltage Input, Voltage Output, 20 → 30V dc Supply
    • RS Stock No. 137-0325
    • Mfr. Part No. 3000-62004-8200010
    Each
    $195.68
    Vega Galvanic Isolator, Current Input
    • RS Stock No. 227-0464
    • Mfr. Part No. TRENN141.ACXXKBX
    Each
    $346.38
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