SLD69400NGT - 400Amp Circuit Breaker

SLD69400NGT - 400Amp Circuit Breaker

The SLD69400NGT is a 3-pole, 400-amp thermal-magnetic molded-case circuit breaker built on the SLD600A frame and designed for use in your commercial and industrial electrical distribution systems. It provides dependable overcurrent and short-circuit protection while serving as a form, fit, and functional replacement for compatible installations. Equipped with an adjustable trip unit, this breaker allows qualified personnel to fine-tune protection settings to match better the requirements of the connected equipment and electrical system. Adjustable functions include continuous current setting, long-time delay, instantaneous setting, short-time pickup, short-time delay, short-time I²t pickup, ground-fault pickup, and ground-fault delay, offering flexibility for your coordination across a variety of applications. Rated for 25kA at 600VAC, 35kA at 480VAC, and 65kA at 240VAC, the SLD69400NGT is built to last and is intended for demanding power distribution environments.

Key Features and Benefits

• 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: The thermal magnetic trip mechanism helps protect against overloads and short circuits.
• Adjustable Trip Unit: Continuous Current Setting, Long Time Delay, Instantaneous Setting, Short Time Pickup, Short Time Delay, Short Time I²t Pickup, Ground Fault Pickup, and Ground Fault Delay.
• Frame Design: SLD600A frame design for compatible installations.
• Interrupting Capacity: 25kA @ 600VAC, 35kA @ 480VAC, and 65kA @ 240VAC.
• Replacement Design: Designed as a form, fit, and functional replacement for compatible electrical systems.
• Built to Last: Built to last in demanding operating environments.
• Lug Terminals: Lug terminals are not included.
  

Technical Specifications

• Part Number: SLD69400NGT
  
• Type: SLD6-A
  
• Frame Size: SLD600A
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Trip Unit: Thermal Magnetic
  
• Poles: 3
  
• Amperes: 400A
  
• Interrupting Rating: 25kA @ 600VAC; 35kA @ 480VAC; 65kA @ 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

• Construction: Molded case circuit breaker construction for commercial and industrial applications.
• Trip Unit: Thermal magnetic trip unit with adjustable protection functions.
• Electrical Ratings: Designed for use within its published voltage and interrupting ratings.
• Installation Requirements: Intended to be installed and maintained by qualified electrical personnel in accordance with applicable electrical codes and manufacturer recommendations.
  

Where It Works Best

• The SLD69400NGT is well-suited for commercial buildings, industrial facilities, manufacturing plants, distribution equipment, switchboards, panelboards, and other three-phase electrical systems requiring a 400-amp molded-case circuit breaker with adjustable thermal-magnetic protection. Its combination of multiple adjustable trip settings and high interrupting ratings makes it an excellent choice for maintaining proper protection and coordination in compatible legacy power distribution systems where a form, fit, and functional replacement is required.