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ZlNT-571

The ABB ZlNT-571 is a 9-pole signal interface and isolation relay module belonging to the ABB ZlNT product series. It is designed for industrial automation and control systems to provide electrical isolation, signal conversion, and contact multiplication between field devices (like sensors, switches) and control systems (like PLCs, DCS, or relays).

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Typical Specifications Parameter Specification Product Type Signal Interface / Isolating Relay Module Number of Poles 9 poles (typically configurable as 3 independent channels) Supply Voltage (Us) Common: 24 V DC or 24-230 V AC/DC (depends on specific variant) Power Consumption Approx. 1.1 W per channel (typical) Input DC Voltage: e.g., 24 V DC (sinking or sourcing). Dry Contact: Volt-free contact. Input Current Typically ~5 mA at 24V DC Output Type Electromechanical Relay (EMR) - Changeover (CO) / SPDT contacts. (Some variants may have solid-state outputs) Output Contact Rating Common: 250 V AC, 5 A (resistive load) Electrical Isolation 3 kV RMS (between Input/Output/Supply) Response Time Operate Time: ~10 ms (typical for relay output) Status Indication LED per channel (usually indicates input status) Connection Screw-clamp terminals, front-accessible Mounting Standard DIN rail (35 mm) Operating Temperature -20°C to +60°C Housing Material Polyamide (PA) Protection Degree (IP) IP20 (front panel when mounted) Approvals / Standards cULus, GL, DNV, IEC 60947-5-1, etc.