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3HNA021752-004

The ABB 3HNA021752-004 is a control relay / contactor auxiliary module designed for integration into low-voltage motor control centers, distribution boards, and industrial automation systems. It provides auxiliary contact functionality, enabling signaling, interlocking, and control of electrical circuits in combination with main contactors or protective relays.

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Specifications General Type: Auxiliary Contact Module / Control Relay Module Series: ABB 3HNA Model: 3HNA021752-004 Application: Auxiliary signaling, interlocking, and control in low-voltage electrical systems Mounting: Snap-on or panel mount compatible with ABB contactors Electrical Characteristics Rated Operational Voltage (Ue): 24–400 V AC/DC Rated Operational Current (Ie): 5–10 A (depending on contact type) Contact Configuration: 2 NO + 2 NC (typical for 004 variant) Insulation Voltage (Ui): 500 V Electrical Life: 100,000–500,000 operations at rated load Mechanical & Construction Housing Material: Thermoplastic / industrial-grade polymer Actuator / Terminal Type: Screw or plug-in terminals Mechanical Life: >1,000,000 operations Dimensions: Compact modular design for DIN rail mounting Protection Class: IP20 (panel mounted) Environmental Conditions Operating Temperature: –25 °C to +55 °C Storage Temperature: –40 °C to +70 °C Humidity: 0–95% RH, non-condensing Standards & Certifications Standards Compliance: IEC 60947-5-1, IEC 60947-4-1 Safety & EMC: CE marked, industrial-grade EMC compliance Approvals: UL, CSA depending on variant Features Modular and compact design for auxiliary control applications Reliable NO/NC contacts for signaling, interlocking, and control Easy snap-on or panel mounting Compatible with ABB low-voltage contactors and control devices