Square D | MAP36400 | Circuit Breaker | 400A | 3-Pole | 600V

Discover reliable, field-proven protection with the Square D MAP36400 circuit breaker. Engineered for demanding electrical environments, this 400A, 3-pole device delivers dependable interruption across three-phase systems at up to 600V, making it a trusted choice for maintenance, retrofit, and replacement projects where exact specifications matter.

Core specifications

• Amperage: 400 A
• Poles: 3-Pole
• Voltage: 600 V
• Reference: MAP36400

Why this MAP36400 stands out

As a part of Square D’s trusted protection lineup, the MAP36400 is designed for compatibility and long-term reliability in industrial panels and distribution equipment. The key advantage is precision compatibility—the MAP36400 part number is the strongest reference when validating fit, ensuring you’re selecting a breaker that matches your panel’s architecture and rating requirements.

Ideal use cases

• Maintenance and service: replace worn-out breakers to restore original protection levels and trip characteristics.
• Retrofit projects: upgrade legacy systems to modern, compliant protection without overhauling panels.
• Replacement in 3-phase systems: safeguard motors, compressors, and other three-phase loads that demand synchronized interruption.
• New installations in compatible Switchgear: when your specification calls for a 400A, 3-pole, 600V protector from Square D.

Fit, compatibility, and installation tips

Before you order, confirm that your equipment matches the MAP36400 specifications: 400A load capacity, 3-Pole configuration, and 600V maximum. The part number is the most reliable reference for compatibility, helping you avoid mismatches in bus layout or trip characteristics. For installation, follow standard safety practices, ensure proper torque on terminals, and verify the breaker’s trip setting aligns with your circuit protection plan.

Note: Confirm fit and ratings before ordering. The MAP36400 part number is the best reference for compatibility, ensuring you get the exact breaker your panel calls for and avoid downstream electrical issues.