SHLD69400NGT - 400Amp Circuit Breaker

SHLD69400NGT - 400Amp Circuit Breaker

When your electrical distribution system calls for a 400 amp, 3-pole molded case circuit breaker, the SHLD69400NGT delivers the form, fit, and functional compatibility needed for many commercial and industrial applications. Built on the SLD600A frame, this thermal magnetic circuit breaker is designed to provide dependable protection against overloads and short circuits while giving qualified technicians the flexibility to fine-tune trip settings for the specific needs of the system. Whether you're maintaining an existing facility, replacing a damaged breaker, or keeping critical equipment in service, the SHLD69400NGT is built to last and helps preserve the original design of compatible electrical equipment. One of the standout features of this breaker is its adjustable trip unit, which allows multiple protection settings to be configured for the application. 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, making it easier to coordinate protection with other devices in the system. The breaker carries interrupting ratings of 35kA at 600VAC, 65kA at 480VAC, and 100kA at 240VAC, making it suitable for installations that require these fault-current capacities.

Key Features and Benefits

• 400 Amp Molded Case Circuit Breaker: 400 Amp molded case circuit breaker.
• Three-Pole Configuration: Three-pole configuration for three-phase power distribution.
• Thermal Magnetic Trip Mechanism: Thermal magnetic trip mechanism for overload and short-circuit protection.
• SLD600A Frame: Built on the SLD600A frame.
• SHLD6-A Breaker Type: SHLD6-A breaker type.
• Adjustable Trip Unit: Adjustable trip unit with 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.
• Interrupting Ratings: 35kA @ 600VAC, 65kA @ 480VAC, and 100kA @ 240VAC.
• Built to Last: Built to last for long-term service in compatible electrical systems.
• Replacement Design: Designed as a form, fit, and functional replacement.
• Lug Terminals: Lug terminals not included.
  

Technical Specifications

• Part Number: SHLD69400NGT
  
• Type: SHLD6-A
  
• Frame: SLD600A
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Trip Mechanism: Thermal Magnetic
  
• Poles: 3
  
• Amperage: 400A
  
• Interrupting Rating: 35kA @ 600VAC; 65kA @ 480VAC; 100kA @ 240VAC
  
• Dimensions:
  • Height: 11.0 in.
  • Width: 7.5 in.
  • Depth: 4.0 in.
• Lug Terminals: Not Included
  

Material Compliance and Certifications

• Thermal Magnetic Construction: Thermal magnetic molded case circuit breaker construction.
• Application: Designed for use in compatible commercial and industrial electrical distribution systems.
• Electrical Ratings: Electrical ratings as specified by the manufacturer.
• Installation Requirements: Always verify compatibility with your equipment and applicable local electrical codes before installation.
  

Where It Works Best

• The SHLD69400NGT is commonly used in commercial buildings, manufacturing facilities, institutional properties, and other industrial environments where a 400 amp, 3-pole molded case circuit breaker is required. It is well suited for switchboards, panelboards, motor control equipment, and power distribution systems that utilize the SLD600A frame. When replacing an existing breaker, matching the frame, ampere rating, interrupting capacity, and trip characteristics helps maintain the original system design and intended protection.