SJD69400 - 400Amp Circuit Breaker

SJD69400 - 400Amp Circuit Breaker

When your electrical distribution system calls for dependable 400-amp, 3-pole circuit protection, the SJD69400 is built to get the job done. This thermal-magnetic molded-case circuit breaker is designed as a form, fit, and function replacement for compatible systems, making it a practical solution for maintaining existing commercial and industrial electrical equipment. Built on the SJD400A frame, the SJD69400 combines thermal overload protection with magnetic short-circuit protection to help safeguard electrical systems against common fault conditions. What makes this breaker especially versatile is its adjustable trip unit. With continuous current, long-time delay, and instantaneous trip settings, electricians and maintenance professionals can tailor protection to match better the needs of the connected equipment and the overall electrical system. The breaker carries interrupting ratings of 25 kA at 600 VAC, 35 kA at 480 VAC, and 65 kA at 240 VAC, making it suitable for a variety of commercial and industrial power distribution applications. Because lug terminals are not included, installers have the flexibility to select compatible lugs that best fit the installation. Whether you're replacing an existing breaker during scheduled maintenance or restoring an electrical system to service, the SJD69400 400A molded case circuit breaker offers the ratings, adjustability, and compatibility needed for many legacy installations. Built to last, it provides dependable protection while helping maintain the original design of compatible electrical equipment.

Key Features and Benefits

• 400 Amp Rating: Rated for 400 Amps to support higher-capacity electrical distribution systems.
• 3-Pole Configuration: 3-pole configuration for three-phase power applications.
• Thermal Magnetic Trip Mechanism: The thermal magnetic trip mechanism protects against overloads and short circuits.
• Adjustable Trip Unit Includes:
  • Continuous Current Setting
  • Long Time Delay
  • Instantaneous Setting
• SJD400A Frame: SJD400A frame for form, fit, and functional replacement in compatible equipment.
• Molded Case Construction: Molded case construction built to last in commercial and industrial environments.
• Interrupting Capacity:
  • 25kA @ 600VAC
  • 35kA @ 480VAC
  • 65kA @ 240VAC
• Lug Terminals: Lug terminals are not included, allowing compatible lugs to be selected for the installation.

Technical Specifications

• Part Number: SJD69400
• Type: SJD6-A
• Circuit Breaker Type: Thermal, Magnetic, Molded Case Circuit Breaker
• Frame Size: SJD400A
• Poles: 3
• Amperage: 400A
• A.I.C. Rating: 25kA @ 600VAC; 35kA @ 480VAC; 65kA @ 240VAC
• Adjustable Trip Functions: Continuous Current Setting, Long Time Delay, Instantaneous Setting
• Dimensions:
  • Height: 11.0 in.
  • Width: 7.5 in.
  • Depth: 4.0 in.
• Lug Terminals Included: No

Material Compliance and Certifications

• Electrical Distribution Systems: The SJD69400 molded case circuit breaker is manufactured for use in compatible electrical distribution systems and is designed to operate within its published electrical ratings.
• Installation Requirements: Installation should be completed in accordance with the National Electrical Code (NEC), applicable local electrical codes, and the equipment manufacturer's recommendations.
• Product Verification: Product markings should always be referenced to verify certifications and compliance requirements for the intended application.

Where It Works Best

• The SJD69400 is commonly used in commercial, industrial, and institutional electrical systems where a 400-amp, 3-pole molded-case circuit breaker is required. It is well-suited for switchboards, panelboards, distribution equipment, motor control systems, manufacturing facilities, warehouses, office buildings, healthcare facilities, and other three-phase power applications. Its adjustable trip settings make it a practical choice wherever protection needs to be matched to the electrical system while maintaining compatibility with existing equipment.