The Schneider Electric Square D PJA36040CU63AE1 is a molded case circuit breaker (MCCB) designed for robust electrical protection in demanding industrial environments. This breaker is part of the PJA series, engineered to deliver reliable performance in systems requiring high interrupt capacity and precise fault detection. It is suitable for integration into main distribution panels and branch circuit protection within heavy commercial and industrial facilities.

Technical details

• Series: PJA
• Type: Molded Case Circuit Breaker (MCCB)
• Voltage Rating: 600V AC
• Current Rating: 400A
• Interrupting Capacity: 63kA at 480V AC (indicated by "63AE1" in the part number, common convention for this series)
• Frame Size: 400A frame (indicated by "40" in the part number)
• Number of Poles: 3 (indicated by "3" in the part number)
• Terminal Type: CU (Copper)

Applications & compatibility

This PJA series MCCB is commonly specified for use in main service entrances, motor control centers, and distribution switchboards within manufacturing plants, data centers, and large commercial buildings. Its high interrupting rating makes it suitable for applications where significant fault currents are anticipated, ensuring the safety of personnel and equipment in systems such as packaging lines, heavy machinery, and power distribution networks.

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 PJA36040CU63AE1 or contact our technical team for cross-reference assistance with compatible PJA series components.