Designed for residential electrical distribution, the Schneider Electric Square D CU12L400CB is a meter main unit from the CU Series. This unit integrates metering and main disconnect functions, featuring a manual test bypass system for operational flexibility. It is engineered to handle significant electrical loads, making it suitable for primary service entrance applications.

Technical details

• Series: Square D CU Series
• Amperage Rating: 400A
• Voltage Rating: 240V AC (typical for residential meter mains, verify with datasheet)
• Number of Phases: 1 (typical for residential meter mains, verify with datasheet)
• Configuration: Meter Main Unit with Main Breaker
• Bypass Type: Manual Test Bypass
• Enclosure Type: NEMA 3R (typical for outdoor meter mains, verify with datasheet)
• Wire Size Compatibility: Suitable for large gauge conductors, verify with datasheet for specific terminal sizes
• Certifications: UL Listed (typical for this product category, verify with datasheet)

Applications & compatibility

The CU12L400CB is commonly installed at the service entrance of residential properties, including single-family homes, multi-unit dwellings, and accessory dwelling units. It serves as the primary point of connection for utility power and provides the main overcurrent protection for the entire electrical system. This unit is compatible with standard residential electrical panels and wiring practices.

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 Schneider Electric Square D CU12L400CB or contact our technical team for cross-reference assistance with compatible meter main components.