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Rayleigh Instruments - Earth Leakage Relays

DIN Rail and Panel mounted Earth Leakage Relays and Core Balanced current transformers for protection from residual current in a single-phase or three-phase circuit.

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  1. Earth Leakage Relay with LCD Display RI-ELR80

    Rayleigh Instruments RI-ELR80 Earth Leakage Relay with LCD Display

    • Two module DIN rail mounted
    • True RMS Earth leakage monitoring
    • Type A leakage detection
    • Digital indication of leakage current
    • Separate test and reset function
    • Single or three-phase network compatible
    • Transformer error detection Read More »
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  2. Earth Leakage Relays with Fixed Trip Levels

    Rayleigh Instruments RI-ELR20 Earth Leakage Relays with Fixed Trip Levels

    • 2 Module width DIN rail mounted
    • True RMS Earth Leakage monitoring
    • Type A leakage detection
    • LED bargraph indication of leakage current
    • Fixed trip presets (30mA, 100mA or 300mA)
    • Test and reset function
    • Single-phase (2 wire) or 3 pha...
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  3. Earth Leakage Relay with Integral Transformer

    Rayleigh Instruments RI-ELR00 Earth Leakage Relay with Integral Transformer

    • Single or three-phase network compatible
    • DIN Rail or Surface mount
    • Integral 35mm transformer
    • Monitor and detect true RMS earth leakage currents
    • Nuisance tripping protected
    • Microprocessor controlled
    • 30mA, 100mA or 300mA Versions Read More »
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  4. RI-CBCT Series Core Balanced Transformers

    RI-CBCT Series Toroid Circular Core Balanced Current Transformers

    • Compact design
    • 5 aperture sizes from 35 to 310mm
    • Single and Three Phase compatible
    • Integral fixing feet
    • For residual leakage current detection
    • High sensitivity and accuracy
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  5. Earth Leakage Relay with Adjustable Trip - RI-ELR60

    Rayleigh Instruments RI-ELR60 Earth Leakage Relay with Adjustable Trip Level

    • 2 Module width DIN rail mounted
    • True RMS Earth Leakage monitoring
    • Type A leakage detection
    • Single phase or 3 phase
    • Selectable trip time delay
    • Selectable trip level
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