Technical Specifications Parameter Specification / Typical Value Manufacturer / Brand Eaton Model Number NZMH2-A250 Product Line NZM Rated Current (Iₙ) 250 A Poles 3 Frame Size NZMH2-A Rated Operational Voltage (Uₑ) 400/415 V AC (IEC) / 690 V AC Rated Insulation Voltage (Uᵢ) 690 V AC Rated Frequency 50/60 Hz Rated Ultimate Breaking Capacity (I꜀ᵤ) Typically 36 kA / 50 kA @ 400V (Must be verified from datasheet) Trip Unit Type Thermal-Magnetic (Non-Adjustable) Overload Protection (Ir) Fixed at 250A Short-Circuit Protection (Im) Fixed magnetic trip Installation Fixed Type Standards Compliance IEC 60947-2 Electrical Life Several thousand cycles (e.g., 5,000) Mechanical Life Tens of thousands of cycles (e.g., 20,000) Terminal Torque Refer to official manual (Specific torque for 250A terminals)

The ABB RET670 1MRK004816-AB Control Relay is a high-performance industrial relay module designed for critical applications requiring precise control and reliability.

The TRICONEX3526 high precision redundant input module is designed for industrial automation control systems with superior signal processing capabilities and high reliability. It is suitable for key control links in petroleum, chemical, electric power, metallurgy and other industries to ensure the stable operation of the system.