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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

    979 Products showing for Signal Conditioners & Isolators

    1 / 49
    Pepperl + Fuchs Signal Conditioner
    • RS Stock No. 134-8140
    • Mfr. Part No. S-ADP-USB
    Each
    MYR761.32
    Pepperl + Fuchs S1SD Series Signal Conditioner, Current Input, Current Output, 16.8 → 31.2V dc Supply
    • RS Stock No. 134-8127
    • Mfr. Part No. S1SD-1Ai-2C
    Each
    MYR1,631.74
    Kubler Signal Conditioner, HTL, RS-422, SSI, TTL Input, Analogue, RS-232, RS-485 Output, 18 → 36V dc Supply
    • RS Stock No. 200-9779
    • Mfr. Part No. 8.SK.1S1D-1A2RS
    Each
    MYR3,386.22
    Passive isolator, 2-chann
    • RS Stock No. 609-475
    • Mfr. Part No. 857-452
    Each
    MYR136,344.64
    Motrona GV Series Signal Converter, HTL, RS-422, TTL Input, HTL, RS-422, TTL Output, 12 → 30V dc Supply
    • RS Stock No. 283-7433
    • Mfr. Part No. GV210
    Each
    MYR1,626.27
    Phoenix Contact Signal Conditioner, Voltage Input, Current Output
    • RS Stock No. 622-3209
    • Mfr. Part No. 2813525
    Each
    MYR1,444.27
    Motrona PU Series Signal Converter, HTL, RS-422, TTL Input, HTL, RS-422, TTL Output, 5 → 30V dc Supply
    • RS Stock No. 283-6473
    • Mfr. Part No. PU210
    Each
    MYR1,649.11
    RS PRO Signal Conditioner, Frequency Input, Current, Voltage Output, 16.8 → 30 V dc, 19.2 → 28.8V ac
    • RS Stock No. 794-8524
    Each
    MYR1,708.52
    Phoenix Contact Signal Transducer, RTD, Thermocouple, Voltage Input, Current Output
    • RS Stock No. 249-2985
    • Mfr. Part No. 1105515
    Each
    MYR2,699.08
    Phoenix Contact MACX Series Signal Conditioner, Current Input, Current Output
    • RS Stock No. 240-1170
    • Mfr. Part No. 2908062
    Each
    MYR1,157.15
    Pepperl + Fuchs S1SD Series Signal Conditioner, Current, Voltage Input, Current, Voltage Output, 16.8 → 31.2V dc
    • RS Stock No. 134-8130
    • Mfr. Part No. S1SD-1AI-1U.1
    Each
    MYR1,091.59
    Motrona IT Series Signal Converter, HTL, RS-422, TTL Input, 9 → 30V dc Supply
    • RS Stock No. 283-7534
    • Mfr. Part No. IT210
    Each
    MYR2,487.81
    Lumel P21Z Series Signal Transducer, AC Voltage Input, Current Output, 20 → 40 V ac V, 20 → 60 V dc V
    • RS Stock No. 173-523
    • Mfr. Part No. P21Z 32200E0
    Each
    MYR1,620.41
    Lumel P21Z Series Signal Transducer, AC Voltage Input, Current Output, 20 → 40 V ac V, 20 → 60 V dc V
    • RS Stock No. 173-526
    • Mfr. Part No. P21Z 62200E0
    Each
    MYR1,620.41
    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
    MYR957.20
    Lumel P20H Series Signal Transducer, DC Voltage Input, Analogue Output, 20 → 40 V ac V, 20 → 60 V dc V
    • RS Stock No. 173-528
    • Mfr. Part No. P20H 32200E0
    Each
    MYR1,620.41
    Murrelektronik Limited Signal Conditioner, RTD Input, Current, Voltage Output
    • RS Stock No. 137-0326
    • Mfr. Part No. 6644334
    Each
    MYR1,142.16
    Murrelektronik Limited Signal Conditioner, RTD Input, Current, Voltage Output
    • RS Stock No. 137-0328
    • Mfr. Part No. 44331
    Each
    MYR1,147.93
    Murrelektronik Limited Signal Conditioner, RTD Input, Current, Voltage Output
    • RS Stock No. 137-0323
    • Mfr. Part No. 44332
    Each
    MYR1,153.00
    Phoenix Contact Signal Transducer, Current Input, Current Output, 18 → 31.2V Supply, ATEX, IECEx
    • RS Stock No. 497-756
    • Mfr. Part No. 1290774
    Each
    MYR2,560.39
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