Square D PowerPact MJA36800 M-Frame 3P 800A MCCB I-Line
800A Frame | 800A | 3P | 100kA@240V, 65kA@480V, 25kA@600V | Electronic (ET1.0 Fixed)
Designed for heavy-duty electrical distribution, the Square D MJA36800 M-Frame circuit breaker provides reliable protection with advanced electronic trip technology. This 3-pole device is rated at 800A with 600V AC voltage capability and an interrupting capacity of 100kA@240V, 65kA@480V, 25kA@600V (High (J) interrupting class). It features a ET1.0 electronic trip unit providing basic overcurrent protection with adjustable settings, rated at 80% continuous current per NEC Article 240.6. The MJA36800 is featuring I-Line plug-in mounting for rapid installation and maintenance in Square D I-Line panelboards and switchboards. This breaker is UL 489 listed and CSA certified with dual UL/IEC ratings, ensuring compliance across North American and international installations. With its combination of advanced protection features and robust construction, the MJA36800 is an excellent choice for demanding electrical distribution applications. The breaker operates reliably at ambient temperatures up to 40 degrees Celsius per UL and IEC standards. Physical dimensions of 10.04" H x 9.00" W x 5.79" D with an approximate weight of ~16 lbs ensure compatibility with standard enclosures. The PowerPact platform supports a comprehensive range of accessories for enhanced functionality, monitoring, and communication capabilities. Field-installable accessories include shunt trip coils, undervoltage releases, auxiliary switches, alarm contacts, and motor operators for remote operation. All terminal connections are designed for easy installation and reliable long-term performance under continuous operating conditions.
Key Features
This PowerPact MCCB features Electronic (ET1.0 Fixed) trip protection rated 800A at 600V AC. Frame size: 800A. Interrupting capacity: 100kA@240V, 65kA@480V, 25kA@600V. Designed for reliable overcurrent protection in industrial and commercial power distribution systems.
Applications
Suitable for main distribution panels, motor control centers, switchboards, and feeder circuit protection in industrial facilities, data centers, and commercial buildings. Compliant with UL 489, CSA C22.2 No.5, IEC/EN 60947-2, NOM, CCC, CE.
