The Schneider Electric Micrologic 4.2 AL trip unit is an electronic overcurrent protection device designed for Compact NSX 250 circuit breakers. This specific model, LV433887, is engineered for 3-pole (3d) configurations and offers a maximum current rating of 250A. It integrates advanced electronic trip functions for enhanced circuit protection in demanding industrial environments.

Technical details

• Series: Micrologic 4.2 AL
• Compatible Circuit Breaker Series: Compact NSX 250
• Trip Unit Type: Electronic
• Number of Poles: 3
• Poles Configuration: 3d (3 Normally Open, 3 Normally Closed auxiliary contacts)
• Maximum Current Rating: 250A
• Protection Functions: Includes Long-Time, Short-Time, Instantaneous, and Ground Fault (AL designation indicates specific ground fault settings)
• Voltage Compatibility: Designed for use within the Compact NSX 250 system; specific system voltage should be verified against manufacturer datasheet.

Applications & compatibility

This Micrologic 4.2 AL trip unit is essential for protecting electrical distribution systems within industrial facilities. It is commonly found in applications such as motor control centers, power distribution panels, and machinery requiring precise overcurrent and ground fault protection, including manufacturing lines, pump systems, and HVAC equipment.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the LV433887 or contact our technical team for cross-reference assistance with compatible Compact NSX 250 components.