Square D | MAP26400V | Circuit Breaker | 400A | 2-Pole | 26400V

When reliable high-voltage protection matters, the Square D MAP26400V circuit breaker delivers a precise, direct-fit solution for demanding electrical systems. With a robust 400 A rating and a 2-pole design, this device is engineered to protect critical power feeders at up to 26,400 V (26.4 kV), making it ideal for maintenance, retrofit, and replacement scenarios in industrial environments.

Key specifications

• Amperage: 400 A
• Poles: 2-Pole
• Voltage: 26,400 V (26.4 kV)

Why this MAP26400V matters for your project

• Exact part-number reference for compatibility: The MAP26400V designation is your best clue for matching Square D panels and switchgear, reducing guesswork and ordering delays.
• High-current protection for critical feeders: 400 A capacity supports heavy-load circuits common in industrial facilities, ensuring reliable interruption when faults occur.
• High-voltage readiness: Designed for systems at 26.4 kV, enabling protection in applications where lower-voltage breakers would be inappropriate or unsafe.
• Versatile use cases: Particularly well-suited for maintenance work, retrofits of legacy equipment, and replacements where exact specifications are required to maintain protection coordination.

How to ensure a correct fit

Before you order, confirm that your equipment’s rating and mounting configuration align with the MAP26400V specifications. The part number itself is the strongest reference for compatibility, helping you avoid mismatches and unnecessary downtime.

Practical guidance for installation and operation

• Review your panel or switchgear data sheet to verify permissible voltage class and bus arrangement for a secure, proper fit.
• Coordinate with protection schemes to ensure correct trip settings and upstream coordination with other protective devices.
• Handle and store high-voltage components per manufacturer guidelines to preserve performance and reliability.