Square D MJA36400 Molded Case Circuit Breaker – 400A – 3-Pole – 600V AC – 65kA @ 480V – I-Line Plug-In – PowerPact MJA Series

The Square D MJA36400 is a 400A, 3-pole molded case circuit breaker from the Square D / Schneider Electric PowerPact Type MJA Series. It is designed for compatible commercial and industrial electrical distribution applications and features current-limiting protection with a solid-state electronic trip unit.

The MJA36400 is rated for 600V AC and provides a 65kA interrupting rating at 480V AC. It features an I-Line style plug-in connection, a basic non-interchangeable 1.0 trip, LI (Long-Time and Instantaneous) trip functions, and load-side lug terminals.

Specifications:

• Manufacturer: Schneider Electric / Square D
• Product Type: Molded Case Circuit Breaker
• Product Family: PowerPact
• Series / Type: MJA
• Catalog No.: MJA36400
• Current Rating: 400A
• Number of Poles: 3-Pole
• Phase: 3-Phase
• Phase Configuration: ABC
• Voltage Rating: 600V AC
• Interrupting Rating: 65kA @ 480V AC
• Protection Type: Solid-State Electronic
• Trip Type: Basic Non-Interchangeable 1.0 Trip
• Trip Functions: LI — Long-Time and Instantaneous
• Current Limiting: Current Limiting
• Mounting / Connection: I-Line Style Plug-In
• Terminal Type: Load-Side Lug Terminals
• Application: Commercial and Industrial Electrical Distribution

Part Numbers & Identification:

• Manufacturer Part Number (MPN): MJA36400
• Catalog Number: MJA36400
• Model: MJA36400
• Product Family: Square D PowerPact
• Series: MJA
• Circuit Breaker Type: MJA
• Brand: Square D
• Manufacturer: Schneider Electric
• Product Type: Molded Case Circuit Breaker
• Configuration: 3-Pole, 400A
• Phase Configuration: ABC
• upc:785901572619

Compatibility:

Designed for use with compatible Square D / Schneider Electric PowerPact MJA Series electrical distribution equipment that accepts I-Line style plug-in molded case circuit breakers. The MJA36400 provides 400A, 3-pole protection for compatible 600V AC systems and features current-limiting solid-state electronic protection.

The breaker uses an I-Line style plug-in connection with load-side lug terminals and a basic non-interchangeable 1.0 trip with LI functionality. Always verify the specific panelboard model, approved breaker type, I-Line compatibility, system voltage, available fault current, pole configuration, trip requirements, terminal arrangement, and installation requirements before installation.

Certifications:

• UL Listed
• 400A Rated
• 3-Pole / 3-Phase
• 600V AC Rated
• 65kA Interrupting Rating @ 480V AC
• Current Limiting
• Solid-State Electronic Trip
• LI Long-Time and Instantaneous Trip
• Basic Non-Interchangeable 1.0 Trip
• I-Line Style Plug-In
• Load-Side Lug Terminals

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You may return items within 10 days of delivery for a refund.

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