SHJD69400NGT - 400Amp Circuit Breaker

SHJD69400NGT - 400Amp Circuit Breaker

When your electrical system calls for dependable 400-amp circuit protection, the SHJD69400NGT molded case circuit breaker delivers the ratings and adjustable protection needed for many commercial and industrial applications. Built on an SJD 400A frame, this 3-pole thermal magnetic circuit breaker is designed for use in compatible electrical distribution systems where proper overcurrent and short-circuit protection is essential.

One of the standout features of this breaker is its adjustable trip unit, allowing electricians and maintenance professionals to fine-tune protection for the application. Adjustable settings include continuous current, long-time delay, instantaneous trip, short-time pickup and delay, I²t pickup, and ground fault pickup and delay, making it easier to coordinate protection with connected equipment and system requirements.

With interrupting ratings of 35kA at 600VAC, 65kA at 480VAC, and 100kA at 240VAC, the SHJD69400NGT is well suited for a variety of commercial and industrial power distribution systems. Whether you're replacing an existing breaker during scheduled maintenance or servicing compatible equipment, this breaker is designed to provide the proper form, fit, and function while helping keep electrical systems operating safely. Built to last, it is supplied without lug terminals, allowing compatible lugs to be selected separately based on the installation.

Key Features and Benefits

• 400 Amp Current Rating: 400 Amp current rating for commercial and industrial electrical systems.
• 3-Pole Configuration: 3-pole configuration for three-phase power distribution.
• Thermal Magnetic Trip Unit: Thermal magnetic trip unit for overload and short-circuit protection.
• SJD 400A Frame: SJD 400A frame with SHJD6-A type designation.
• Adjustable Protection Settings:
  • Continuous Current Setting
  • Long Time Delay
  • Instantaneous Setting
  • Short Time Pickup
  • Short Time Delay
  • Short Time I²t Pickup
  • Ground Fault Pickup
  • Ground Fault Delay
• Interrupting Capacity:
  • 35kA @ 600VAC
  • 65kA @ 480VAC
  • 100kA @ 240VAC
• Designed for Long Service Life: Designed for long service life.
• Replacement Compatibility: Suitable as a form, fit, and functional replacement in compatible equipment.
• Lug Terminals: Lug terminals are not included.

Technical Specifications

• Part Number: SHJD69400NGT
• Type: SHJD6-A
• Frame Size: SJD 400A Frame
• Circuit Breaker Type: Molded Case Circuit Breaker
• Trip Unit: Thermal Magnetic
• Poles: 3
• Amperage: 400A
• Voltage Rating: Up to 600VAC
• Interrupting Capacity: 35kA @ 600VAC; 65kA @ 480VAC; 100kA @ 240VAC
• Adjustable Functions: Continuous Current Setting, Long Time Delay, Instantaneous Setting, Short Time Pickup, Short Time Delay, Short Time I²t Pickup, Ground Fault Pickup, Ground Fault Delay
• Lug Terminals: Not Included
• Dimensions:
  • Height: 11.0 in.
  • Width: 7.5 in.
  • Depth: 4.0 in.

Material Compliance and Certifications

• Electrical Distribution Systems: The SHJD69400NGT molded case circuit breaker is manufactured for use in electrical distribution systems and is designed to meet the electrical ratings associated with its frame size and trip unit configuration.
• Compatibility Verification: Always verify compatibility with your existing equipment, project specifications, and applicable electrical codes before installation. Material compliance and certifications should be confirmed from the product label and manufacturer documentation where required.

Where It Works Best

• The SHJD69400NGT is commonly used in commercial buildings, manufacturing facilities, industrial plants, switchboards, panelboards, motor control applications, and power distribution systems requiring a 400-amp, 3-pole molded case circuit breaker. It is particularly well suited for maintaining compatible legacy equipment where matching the original electrical ratings, frame size, and protective functions is important for continued operation.