The 3VA2440-5KP42-0AA0 is a molded case circuit breaker (MCCB) manufactured by Siemens. This circuit breaker is part of the 3VA series, which is designed for protecting electrical circuits from overcurrent and short-circuit faults in industrial and commercial applications. The specific part number indicates its current rating, breaking capacity, and other features.

Applications:

• Industrial Power Distribution: Used in main distribution boards and sub-distribution panels in industrial facilities.
• Commercial Buildings: Employed in power distribution systems for commercial buildings.
• Motor Protection: Provides overcurrent and short-circuit protection for electric motors.
• Generator Protection: Used to protect generators from faults.

Features:

• Molded Case Circuit Breaker (MCCB): Provides reliable protection against overcurrent and short-circuit faults.
• Adjustable Trip Settings: Allows for customization of protection settings to match specific application requirements.
• High Breaking Capacity: Capable of interrupting high fault currents.
• Thermal-Magnetic Trip Unit: Provides both thermal and magnetic protection.

Benefits:

• Enhanced Electrical Safety: Protects electrical equipment and personnel from overcurrent and short-circuit hazards.
• Reliable Protection: Offers reliable and consistent protection performance.
• Easy Installation: Simple to install in standard electrical panels.
• Long Service Life: Provides a long service life with minimal maintenance.

Additional Details:

Based on similar 3VA series MCCBs, the 3VA2440-5KP42-0AA0 likely has a current rating of 400A and a specific breaking capacity (e.g., 55kA or higher). Siemens MCCBs often have adjustable thermal and magnetic trip settings for fine-tuning the protection characteristics. They comply with relevant IEC standards. Designers must consult the official datasheet from Siemens for detailed specifications, including current rating, breaking capacity, trip curves, voltage ratings, and compliance certifications. Proper application requires accurate datasheet information to ensure adequate protection and compliance with electrical codes and standards.