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Square D MA26450BC - Molded Case 450A 2-Pole (600V)

Square D
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Square D MA26450BC is a 2-pole I-Line style molded case circuit breaker from the MA frame family, designed to provide LI (Long-Time and Instantaneous) thermal-magnetic protection for commercial and industrial power distribution systems. It is rated for 450A at 600VAC with a 30kA interrupting capacity at 480V, utilizing a single-phase, plug-in connection for panelboard and switchgear integration. The unit weighs 40 lb and features a compact, durable construction suited for high-demand electrical environments. It complies with UL and CSA safety standards for reliable overcurrent protection. Typical applications include use in I-Line panelboards and switchgear requiring robust, field-installable circuit protection.

Key Features & Specifications
  • Manufacturer: Square D
  • Model: MA26450BC
  • Type: Molded Case Circuit Breaker
  • Family: I-Line
  • Frame: MA
  • Functions: LI - Long-Time and Instantaneous
  • Current Rating: 450A
  • Voltage Rating: 600V
  • Poles: 2
  • Phase: 1
  • Protection: Thermal Magnetic
  • Connection: I-Line Style Plug-In
  • Mounting Type: Plug-In
  • AIC Rating: 30kA @ 480V
  • Weight: 40 lb
  • Certifications: UL Listed, CSA Certified


Part Number: MA26450BC