Square D MJL36800E10 PowerPact M-Frame MCCB – 3 Pole – 800A Frame – Adjustable Trip – Molded Case Circuit Breaker

The Square D MJL36800E10 is a PowerPact M-Frame molded case circuit breaker designed for high-capacity industrial power distribution and protection. It is used in switchboards and panelboards to deliver reliable overload and short-circuit protection for three-phase electrical systems. With an adjustable trip mechanism and robust M-Frame construction, it provides flexibility, coordination capability, and strong fault protection in demanding applications.

Electrical Ratings

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

Protection and Trip Functions

• Trip Type: Adjustable electronic trip system
• Protection Functions: Overload and short-circuit protection
• Trip Adjustability: System-selectable coordination settings
• Application Type: Feeder and distribution protection
• Trip Architecture: Modular electronic trip unit system

Configuration and Function

• Device Type: Molded Case Circuit Breaker (MCCB)
• Series: PowerPact M-Frame (MJL Model)
• Mounting Type: Unit mount / panelboard compatible
• Electrical Connection: Line and load lug terminals
• Application: Switchboards, panelboards, industrial distribution systems
• Sub-category: Interchangeable trip breaker

Mechanical and Physical Characteristics

• Heavy-duty industrial M-Frame construction
• Designed for high-current electrical systems
• Modular trip system for maintenance and upgrades
• Suitable for switchboard and panelboard installation
• Built for long operational life in demanding environments
• Compact high-capacity breaker architecture

Standards and Compliance

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

Features

• High-capacity up to 800A MCCB platform
• Adjustable trip unit for system coordination flexibility
• 25 kA interrupting capacity at 600V AC
• Designed for industrial switchboards and feeders
• Rugged M-Frame construction for heavy-duty applications
• Reliable overload and short-circuit protection
• Modular architecture for serviceability
• Suitable for large electrical distribution systems
• Strong fault-handling performance in industrial environments
• Engineered for modern power distribution systems