SHJD69400NT - 400Amp Circuit Breaker

SHJD69400NT - 400Amp Circuit Breaker

When your electrical distribution system calls for dependable circuit protection, the SHJD69400NT delivers the form, fit, and function needed for compatible installations. This 3-pole, 400-amp molded case circuit breaker is built on the SJD 400A frame and features a thermal magnetic trip unit that helps protect electrical equipment from overloads and short circuits. Whether you're maintaining an existing commercial facility, supporting industrial operations, or replacing a compatible breaker in legacy equipment, this model is designed to integrate with systems that require these specific electrical ratings and dimensions. One of the standout features of the SHJD69400NT is its SHJD6-A adjustable trip unit, which gives qualified personnel the flexibility to fine-tune protection settings for the application. Adjustable functions include continuous current setting, long-time delay, instantaneous setting, short-time pickup, short-time delay, and short-time I²t pickup, making it easier to coordinate protection with the rest of the electrical system. With interrupting ratings of 35kA at 600VAC, 65kA at 480VAC, and 100kA at 240VAC, this breaker is built to last while providing dependable protection in demanding commercial and industrial environments.

Key Features and Benefits

• 400 Amp Current Rating: 400 amp current rating for commercial and industrial power distribution.
• 3-Pole Configuration: 3-pole configuration for three-phase electrical systems.
• Thermal Magnetic Trip Mechanism: Thermal magnetic trip mechanism helps protect against overloads and short circuits.
• SHJD6-A Adjustable Trip Unit: SHJD6-A adjustable trip unit with Continuous Current Setting, Long-Time Delay, Instantaneous Setting, Short-Time Pickup, Short-Time Delay, and Short-Time I²t Pickup.
• SJD 400A Frame: SJD 400A frame for compatibility with matching equipment.
• Interrupting Ratings: 35kA @ 600VAC, 65kA @ 480VAC, and 100kA @ 240VAC.
• Replacement Design: Designed as a form, fit, and functional replacement for compatible electrical systems.
• Built to Last: Built to last in demanding commercial and industrial applications.
• Lug Terminals: Lug terminals not included.
  

Technical Specifications

• Part Number: SHJD69400NT
  
• Type: SHJD6-A
  
• Frame Size: SJD 400A Frame
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Trip Type: Thermal Magnetic
  
• Poles: 3
  
• Amperage: 400 Amps
  
• Interrupting Rating: 35kA @ 600VAC; 65kA @ 480VAC; 100kA @ 240VAC
  
• Adjustable Trip Functions:
  • Continuous Current Setting
  • Long-Time Delay
  • Instantaneous Setting
  • Short-Time Pickup
  • Short-Time Delay
  • Short-Time I²t Pickup
• Lug Terminals: Not Included
  
• Dimensions:
  • Height: 11.0 in.
  • Width: 7.5 in.
  • Depth: 4.0 in.

Material Compliance and Certifications

• Electrical Distribution Systems: Molded case circuit breaker designed for commercial and industrial electrical distribution systems.
• Thermal Magnetic Protection: Thermal magnetic overcurrent protection.
• Interrupting Capacity: Interrupting capacity rated at 35kA @ 600VAC, 65kA @ 480VAC, and 100kA @ 240VAC.
• Installation Requirements: Always confirm compatibility with your existing equipment and applicable electrical codes before installation.
  

Where It Works Best

• The SHJD69400NT is commonly used in commercial buildings, manufacturing facilities, industrial plants, and other three-phase electrical distribution systems where a 400-amp molded case circuit breaker is required. It's an excellent choice when replacing a compatible breaker in switchboards, panelboards, motor control equipment, or other power distribution assemblies that require the same frame size, electrical ratings, and adjustable trip functions. By matching the original specifications, this breaker helps keep existing electrical systems operating as intended without requiring changes to compatible equipment.