Square D MJA36800E10 PowerPact M-Frame MCCB – 3 Pole – 800A – I-Line Mount – Adjustable Trip – Molded Case Circuit Breaker

The Square D MJA36800E10 is a PowerPact M-Frame molded case circuit breaker designed for high-capacity industrial power distribution and protection. It is engineered for use in switchboards and panelboards to provide reliable overload and short-circuit protection for three-phase electrical systems. Featuring an adjustable trip unit and I-Line mounting design, it allows flexible coordination and easy installation in industrial applications.

Electrical Ratings

• Frame / Rated Current: 300–800 A (adjustable frame range)
• Rated Current (Configured): up to 800 A
• Voltage Rating: 600 V AC
• Phase: 3 Phase
• Poles: 3 Pole
• Interrupting Capacity: 25 kA
• Utilization: Industrial power distribution and feeder protection
• Continuous Rating: 80%

Protection and Trip Functions

• Trip Unit Type: Adjustable electronic trip system
• Protection Functions: Overload and short-circuit protection (adjustable coordination)
• Trip Characteristics: Adjustable settings for system selectivity
• Application Type: Feeder and distribution protection

Configuration and Function

• Device Type: Molded Case Circuit Breaker (MCCB)
• Series: PowerPact M-Frame (MJA Series)
• Mounting Type: I-Line Panelboard Mount
• Electrical Connection: I-Line style plug-in system
• Phase Arrangement: ABC phase configuration
• Application: Switchboards, panelboards, industrial distribution systems

Mechanical and Physical Characteristics

• Heavy-duty M-Frame construction
• Designed for high-current industrial applications
• Modular design for easy installation and replacement
• Suitable for switchboard and panelboard integration
• Built for long-term industrial operation under high load

Standards and Compliance

• UL 489 compliant
• IEC 60947-2 compliant
• CSA certified (application dependent)
• Manufacturer: Schneider Electric / Square D
• Series: PowerPact M-Frame

Features

• High-capacity adjustable 800A MCCB system
• I-Line plug-in design for fast installation
• Adjustable trip settings for coordination flexibility
• 25 kA interrupting capacity at 600V AC
• Designed for industrial switchboards and distribution panels
• Robust M-Frame construction for demanding environments
• Reliable overload and short-circuit protection
• Suitable for large feeder and distribution applications
• Modular architecture for maintenance and upgrades
• Long operational life in heavy-duty electrical systems

Returns are easy

You may return items within 30 days of delivery for a refund.

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