SHLD69400NT - 400Amp Circuit Breaker

SHLD69400NT - 400Amp Circuit Breaker

When your electrical system requires dependable 400 amp overcurrent protection, the SHLD69400NT molded case circuit breaker delivers the ratings and adjustable protection needed for many commercial and industrial applications. Built on the SLD600A frame, this 3-pole thermal magnetic circuit breaker is designed as a form, fit, and functional replacement for compatible installations, making it an ideal choice when maintaining or servicing existing equipment. One of the standout features of the SHLD69400NT is its adjustable thermal magnetic trip unit, giving qualified personnel the flexibility to fine-tune protection settings for the specific needs of the electrical system. Adjustable functions include continuous current setting, long-time delay, instantaneous setting, short-time pickup, short-time delay, and short-time I²t pickup, helping coordinate protection with other devices in the distribution system. With interrupting ratings of 35kA at 600VAC, 65kA at 480VAC, and 100kA at 240VAC, this breaker is well suited for demanding power distribution applications. Built to last, it is intended to provide dependable service when installed and maintained properly. Please note that lug terminals are not included and must be supplied separately if required for your installation.

Key Features and Benefits

• 400 Amp Current Rating: 400 Amp current rating for commercial and industrial electrical distribution.
• 3-Pole Configuration: 3-pole configuration for three-phase systems.
• Thermal Magnetic Trip Mechanism: Thermal magnetic trip mechanism provides overload and short-circuit protection.
• SLD600A Frame: Built on the SLD600A frame for compatible installations.
• Adjustable Trip Unit: Adjustable trip unit includes Continuous Current Setting, Long Time Delay, Instantaneous Setting, Short Time Pickup, Short Time Delay, and Short Time I²t Pickup.
• Interrupting Capacity: 35kA @ 600VAC, 65kA @ 480VAC, and 100kA @ 240VAC.
• Built to Last: Built to provide lasting service in demanding environments.
• Replacement Design: Designed as a form, fit, and functional replacement for compatible equipment.
• Lug Terminals: Lug terminals are not included.
  

Technical Specifications

• Part Number: SHLD69400NT
  
• Type: SHLD6-A
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Size: SLD600A Frame
  
• Trip Unit: Thermal Magnetic
  
• Poles: 3
  
• Amperage: 400A
  
• Interrupting Rating: 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
• Dimensions:
  • Height: 11.0 in.
  • Width: 7.5 in.
  • Depth: 4.0 in.
• Lug Terminals: Not Included
  

Material Compliance and Certifications

• Low-Voltage Electrical Distribution: Molded case circuit breaker designed for low-voltage electrical distribution applications.
• Published Electrical Ratings: Intended for use within its published electrical ratings.
• Installation Requirements: Install in accordance with applicable electrical codes and manufacturer recommendations.
• Compatible Equipment: Suitable for use in compatible equipment when proper application and installation practices are followed.
  

Where It Works Best

• The SHLD69400NT is commonly used in commercial buildings, industrial facilities, manufacturing plants, institutional properties, and other three-phase electrical distribution systems requiring 400 amp circuit protection. Its adjustable trip functions make it a practical choice for feeders, switchboards, panelboards, motor circuits, and other applications where coordinated overcurrent protection is important. Whether you're replacing an existing breaker during maintenance or keeping legacy equipment in service, this breaker is designed to provide the proper form, fit, and functional compatibility with matching electrical systems.