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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

    900 Products showing for Signal Conditioners & Isolators

    1 of 45
    RS PRO Signal Conditioner, Current Input, Current Output
    • RS Stock No. 794-8577
    Each
    $123.04
    RS PRO Signal Conditioner, Current Input, Current Output
    • RS Stock No. 192-3391
    Each
    $219.70
    RS PRO Signal Conditioner, Current Input, Current, Voltage Output, 24V ac/dc Supply
    • RS Stock No. 192-3394
    Each
    $427.99
    RS PRO Signal Conditioner, Current Input, Current, Voltage Output, 24V ac/dc Supply
    • RS Stock No. 192-3395
    Each
    $281.57
    RS PRO Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24V ac/dc Supply
    • RS Stock No. 192-3396
    Each
    $384.54
    RS PRO Signal Conditioner, Current Input, Voltage Output, 24V dc Supply
    • RS Stock No. 466-2258
    Each
    $294.26
    RS PRO Signal Conditioner, Current Input, Current Output, 9 → 30V dc Supply
    • RS Stock No. 466-2264
    Each
    $572.21
    Eaton 1 Channel Zener Barrier, Intrinsic Safety Barrier, Digital Input, ATEX
    • RS Stock No. 612-5307
    • Mfr. Part No. MTL7741/RS
    Each
    $347.53
    GIC Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24V dc Supply
    • RS Stock No. 884-2458
    • Mfr. Part No. 2SC3D11CC3
    Each
    $218.64
    Eaton 1 Channel Zener Barrier, Repeater power supply, Current Input, Current Output, ATEX
    • RS Stock No. 703-7056
    • Mfr. Part No. MTL5541/RS
    Each
    $886.69
    Idec 3 Channel Zener Barrier, Intrinsic Safety Barrier, Relay Output, ATEX
    • RS Stock No. 165-6896
    • Mfr. Part No. EB3C-R03AN
    Each
    $421.57
    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
    Each
    $239.46
    PR Electronics 4100 Series Universal Transmitter, Universal Input, Current, Voltage Output, 19.2 → 300 V dc,
    • RS Stock No. 796-6887
    • Mfr. Part No. 4114
    Each
    $514.61
    RS PRO Signal Conditioner, Current Input, Current Output
    • RS Stock No. 794-8580
    Each
    $316.19
    Weidmuller ACT20X Series Signal Conditioner, RTD Input, Current Output, 9 → 30V dc Supply
    • RS Stock No. 393-0184
    • Mfr. Part No. 8473010000
    Each
    $184.76
    Phoenix Contact MCR-S10 Series Current Measuring Transducer, Current Input, Current Output, 20 → 30V dc Supply
    • RS Stock No. 337-2746
    • Mfr. Part No. 2814728
    Each
    $911.48
    Phoenix Contact MINI MCR Series Signal Conditioner, Voltage Input, Voltage Output, 30V dc Supply
    • RS Stock No. 489-2926
    • Mfr. Part No. 2864134
    Each
    $79.97
    RS PRO Signal Conditioner, Voltage Input, Voltage Output, 24V dc Supply
    • RS Stock No. 466-2236
    Each
    $224.96
    Weidmuller ACT20X Series Signal Conditioner, Current, RTD, Thermocouple Input, Current Output, 19.2 → 31.2V
    • RS Stock No. 902-8041
    • Mfr. Part No. 8965470000
    Each
    $605.68
    RS PRO Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 16.8 → 30V Supply
    • RS Stock No. 794-8574
    Each
    $576.61
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