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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

    946 Products showing for Signal Conditioners & Isolators

    1 / 48
    Weidmüller ACT20P Series Signal Converter, Current, Voltage Input, Current Output, 30V dc Supply, ATEX, IECEx
    • RS Stock No. 287-4694
    • Mfr. Part No. 2489730000
    Each
    MYR1,545.11
    Phoenix Contact MACX MCR-SL-RPSSI-I Series Signal Conditioner, Current Input, Current Output, 19.2 → 30V dc
    • RS Stock No. 801-6185
    • Mfr. Part No. 2865955
    Each
    MYR1,392.62
    PR Electronics 5100 Series Galvanic Barrier, Current, RTD, Thermocouple, Voltage Input, Current, Voltage, Relay Output,
    • RS Stock No. 796-6994
    • Mfr. Part No. 5116B
    Each
    MYR2,848.18
    Weidmüller ACT20P Series Limit Signal Transmitter, Temperature Input, Relay Output, 264V Supply
    • RS Stock No. 287-5425
    • Mfr. Part No. 1238910000
    Each
    MYR2,101.85
    Weidmuller ACT20P Series Signal Conditioner, Current Input, Current Output, 20 → 30V dc Supply, ATEX, IECEx
    • RS Stock No. 892-8984
    • Mfr. Part No. 7760054115
    Each
    MYR988.77
    WAGO 857 Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24V dc Supply, ATEX, IECEx
    • RS Stock No. 135-7389
    • Mfr. Part No. 857-400
    Each
    MYR2,048.52
    Weidmuller ACT20P Series Signal Transducer, Current Input, Current Output, 31.2V Supply
    • RS Stock No. 892-9000
    • Mfr. Part No. 1510440000
    Each
    MYR1,264.82
    Red Lion Controls IFM Series Frequency / Current Converter, Analogue, Relay Output, 21.6 → 25V ac Supply
    • RS Stock No. 287-8101
    • Mfr. Part No. IFM0001
    Each
    MYR2,393.66
    Weidmüller ACT20P Series Signal Converter, Current Input, Voltage Output, 30V dc Supply, ATEX, IECEx
    • RS Stock No. 287-5523
    • Mfr. Part No. 1540010000
    Each
    MYR902.05
    Phoenix Contact MINI MCR Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24V dc Supply, ATEX
    • RS Stock No. 134-8670
    • Mfr. Part No. 2905028
    Each
    MYR1,322.66
    Phoenix Contact MINI MCR Series Signal Conditioner, Current, Voltage Input, Current Output, 8 → 30V dc Supply,
    • RS Stock No. 134-8677
    • Mfr. Part No. 2902061
    Each
    MYR847.40
    Crouzet 3RS7005 Series Signal Conditioner, Current Input, Voltage Output, 24V Supply
    • RS Stock No. 413-588
    • Mfr. Part No. 88950108
    Each
    MYR632.92
    Phoenix Contact MACX MCR Series Signal Conditioner, Current, Voltage Input, Current Output, 8 → 30V dc Supply,
    • RS Stock No. 196-0434
    • Mfr. Part No. 2902063
    Each
    MYR920.03
    RS PRO Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 10 → 30V dc Supply
    • RS Stock No. 218-4469
    Each
    MYR1,260.75
    Pepperl + Fuchs S1SD Series Signal Conditioner, RTD, Potentiometer, Thermocouple, Voltage Input, Current, Voltage
    • RS Stock No. 134-8134
    • Mfr. Part No. S1SD-1TI-1U
    Each
    MYR1,296.45
    Weidmüller ACT20P Series Signal Transducer, Current Input, Analogue, Relay Output, 31.2V Supply, DNV GL
    • RS Stock No. 287-5518
    • Mfr. Part No. 1510320000
    Each
    MYR1,084.30
    Jumo ecoTRANS Series Signal Conditioner, Conductivity, Temperature Input, Current, Voltage Output, 24V dc Supply
    • RS Stock No. 185-435
    • Mfr. Part No. 202731/01-015/024,000
    Each
    MYR2,872.86
    RS PRO Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 24 → 240V ac/dc Supply
    • RS Stock No. 192-3390
    Each
    MYR1,166.62
    Phoenix Contact MINI MCR-SL-U-U-SP Series Signal Conditioner, Current, Voltage Output, 10 → 30V dc Supply
    • RS Stock No. 801-9043
    • Mfr. Part No. 2708083
    Each
    MYR3,082.35
    Weidmüller ACT20P Series Signal Transducer, Current Input, Analogue, Relay Output, 31.2V Supply, DNV GL
    • RS Stock No. 287-5520
    • Mfr. Part No. 1510330000
    Each
    MYR1,084.30
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