Electronic trip unit, ComPacT NSX, Micrologic2.3, for NSX400, 400A, 4P 4D C4042D400

Electronic trip unit for circuit breaker – protection and reliability

This Micrologic 2.3 electronic trip unit, designed for ComPacT NSX400 circuit breakers, provides advanced protection for electrical installations. It is a key element in ensuring safety and continuity of power supply in demanding applications. Designed to work with 4-pole (4P) circuit breakers with a rated current of 400A, it offers precise and fast response to overloads and short circuits.

Characteristics and application

This trip unit, with an overload setting range of 160A to 400A, allows you to tailor the protection to the specific needs of the installation. The time-delay short-circuit trip characteristic makes it ideal for circuits with high inrush current – e.g., electric motors or transformers. Electronic tripping technology guarantees high selectivity and minimizes the risk of unnecessary circuit tripping. The trip unit does not require an external power source, simplifying installation and operation.

Advantages and benefits

• Precise protection: Micrologic 2.3 offers advanced protection functions against overloads and short circuits, increasing system reliability.
• Adaptation to needs: Adjustable overload setting range (160…400A) allows for optimal adaptation to the load characteristics.
• Fast reaction: Setting of instantaneous short-circuit release at 4800A and time-delay short-circuit release (240…4000A) ensures rapid intervention in the event of a failure.
• Simple installation: No need for an external power supply simplifies installation and reduces costs.
• High quality workmanship: Robust construction guarantees long-lasting and trouble-free operation in harsh environmental conditions.
• Compatibility: Designed specifically for ComPacT NSX400 circuit breakers, ensuring a perfect fit and cooperation.

Physical parameters and mounting

The trip unit measures 184.7 mm (width), 94.6 mm (height) and 112.6 mm (depth). Mounting is done on a mounting plate inside the ComPacT NSX400 circuit breaker enclosure. Remember to maintain appropriate working conditions and compliance with applicable standards during installation and operation of the device.