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Zelio Control

Measurment & Control Relays

Part of Harmony

Zelio Control Relays monitor and detect abnormal operating conditions about phases, current, voltage, frequency, speed, or temperature

Zelio Control
  • Features

    • Compliant with international standards EN60255-1, IEC60255-1

    • Wide monitoring parameters: phase, current, voltage, liquid level, frequency, speed, temperature and pump control.

    • DIN rail mount with 3 form factors: 17.5mm, 22.5mm and 35mm width

    • Self-powered available for 3 phase range, wiring saving

    • Single or Multifunction available

    • Positive logic output to protect the system at power lose

    • Adjustable time delay to prevent nuisance tripping

    • True RMS value measurement (even on deformed sinus waves)


    • Simple and accurate adjustments to achieve quick setup.

    • Innovative: dial pointer LED indicator and” Diagnostic Button” to assist commissioning and troubleshooting

    • Easy setting: QR code on the product to download instruction sheet

    • Robust performance and accurate monitoring


    • Hoisting: construction cranes, Harbor

    • Packaging: Motor voltage, current over load

    • Lifts: construction lifts, passenger lifts, escalators

    • Textile: motor voltage, current overload

    • Water: liquid level at WWW recycling plant on water tank


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