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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

    896 Products showing for Signal Conditioners & Isolators

    1 of 45
    Weidmuller ACT20X Series Signal Conditioner, RTD Input, Current Output, 9 → 30V dc Supply
    • RS Stock No. 390-8165
    • Mfr. Part No. 8473000000
    Each
    $189.07
    Phoenix Contact 3118 Series Signal Conditioner, NPN, PNP Input, Current Output, 24V Supply
    • RS Stock No. 249-5309
    • Mfr. Part No. 2943437
    Each
    $113.82
    Phoenix Contact MACX MCR-SL-CAC-5-I-UP Series Current Measuring Transducer, Current Input, Current Output, 19.2
    • RS Stock No. 801-6296
    • Mfr. Part No. 2810625
    Each
    $675.07
    Eaton 1 Channel Galvanic Barrier, Current, Pluse, Voltage Input, ATEX
    • RS Stock No. 174-7911
    • Mfr. Part No. MTL5532
    Each
    $1,221.73
    Eaton 1 Channel Zener Barrier, Intrinsic Safety Barrier, Digital Output, ATEX
    • RS Stock No. 612-5313
    • Mfr. Part No. MTL7728+/RS
    Each
    $182.57
    Pepperl + Fuchs 2 Channel Zener Barrier, ATEX
    • RS Stock No. 793-4304
    • Mfr. Part No. 261551
    Each
    $319.32
    PR Electronics 9 Series Signal Conditioner, Current Input, Current, Relay Output, 19.2 → 31.2V dc Supply
    • RS Stock No. 827-5369
    • Mfr. Part No. 9106B1B
    Each
    $690.22
    Eaton 2 Channel Zener Barrier, Fire & Smoke Detector Interface, ATEX
    • RS Stock No. 783-4046
    • Mfr. Part No. MTL5561/RS
    Each
    $997.19
    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
    $450.32
    PR Electronics 5 Series Signal Conditioner, Frequency Input
    • RS Stock No. 796-6950
    • Mfr. Part No. 5223A2
    Each
    $1,483.10
    Phoenix Contact MINI MCR Series Signal Conditioner, Voltage Input, Voltage Output, 30V dc Supply
    • RS Stock No. 489-2926
    • Mfr. Part No. 2864134
    Each
    $142.14
    JM CONCEPT EOLIS 6000 Series Isolating Signal Converter, DC Voltage Input, Current, Voltage Output, 22 → 240 V
    • RS Stock No. 232-5970
    • Mfr. Part No. EOLIS6000P2
    Each
    $1,035.85
    Weidmuller ACT20M Series Signal Conditioner
    • RS Stock No. 892-8947
    • Mfr. Part No. 1175990000
    Each
    $605.28
    Omron MINI MCR-2-RPSS-I-2I Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 100 →
    • RS Stock No. 795-0817
    • Mfr. Part No. G3PW-A220EU-S
    Each
    $974.11
    Eaton 2 Channel Zener Barrier, Repeater power supply, Current Input, Current Output, ATEX
    • RS Stock No. 703-7065
    • Mfr. Part No. MTL5544/RS
    Each
    $967.11
    Eaton MTL Series Signal Conditioner, Current Input, Current, Voltage Output, 10 → 32V dc Supply
    • RS Stock No. 144-8690
    • Mfr. Part No. MTL1145
    Each
    $359.72
    WAGO JUMPFLEX Series Signal Conditioner, Current, Voltage Input, Current Output, 24V dc Supply, ATEX, IECEx
    • RS Stock No. 180-3042
    • Mfr. Part No. 857-423
    Each
    $714.23
    Phoenix Contact 1 Channel Galvanic Barrier, Isolating Amplifier, NAMUR Sensor, Switch Input, Transistor Output, ATEX
    • RS Stock No. 751-1324
    • Mfr. Part No. 2865463
    Each
    $232.63
    Murrelektronik Limited Signal Conditioner, Voltage Input, Current, Voltage Output, 18 → 32V dc Supply
    • RS Stock No. 137-0320
    • Mfr. Part No. 7000-31261-0000000
    Each
    $373.79
    Weidmüller ACT20P Series Signal Converter, Current Input, Voltage Output, 30V dc Supply, ATEX, IECEx
    • RS Stock No. 287-5523
    • Mfr. Part No. 1540010000
    Each
    $370.27
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