3TA400K - 400A, 3P K Frame Lug Kit

3TA400K -  400A, 3P K Frame Lug Kit

The Eaton 3TA400K is a high-performance terminal accessory for Series C molded case circuit breakers, engineered to provide secure, efficient line and load connections in demanding electrical distribution systems. Designed for 400 amp applications and compatible with Frame J-K, three-pole breakers, this pressure-type terminal supports large copper or aluminum conductors, helping ensure dependable conductivity and long-term reliability. With its compact footprint and UL Listing, the 3TA400K terminal is built to meet the expectations of commercial and industrial professionals who require precise fit, strong mechanical connections, and compliance with recognized safety standards. Whether upgrading existing equipment or completing a new installation, this accessory delivers the connection integrity critical to maintaining system performance and minimizing downtime.

Key Features and Benefits

• Designed for Eaton Series C molded case circuit breakers
• Rated for 400A applications
• Compatible with Frame J-K, three-pole breakers
• Pressure-type line and load terminals for secure conductor retention
• Accepts (2) #3/0 AWG–250 kcmil copper or aluminum conductors
• Compact dimensions for easier integration into panelboards and switchgear
• Built to meet strict UL Listed safety requirements
• Supports consistent electrical performance in commercial and industrial environments

Technical Specifications

• Catalog Number: 3TA400K
  
• UPC: 786679149416
  
• Product Type: Molded Case Circuit Breaker Accessory (Terminal)
  
• Amperage Rating: 400 Amps
  
• Series: Series C
  
• Frame Size: J-K
  
• Number of Poles: Three-Pole
  
• Terminal Type: Pressure type line and load
  
• Wire Size Compatibility: (2) #3/0 AWG–250 kcmil Cu/Al
  
• Product Dimensions (L x H x W): 6.4 in x 4.7 in x 4 in
  
• Weight: 1.1 lb
  

Material Compliance and Certifications

• UL Listed: The Eaton 3TA400K terminal is UL Listed, confirming it has been evaluated to nationally recognized safety standards for electrical equipment. This certification provides added assurance that the accessory meets established performance and compliance benchmarks required in commercial and industrial installations throughout the United States.
  

Where It Works Best

• The 3TA400K terminal is ideal for use in commercial buildings, industrial facilities, manufacturing plants, and institutional electrical systems where 400A Series C molded case circuit breakers are installed. It is especially well-suited for applications requiring secure termination of large copper or aluminum conductors within panelboards, switchgear, and distribution assemblies. Electrical contractors, maintenance teams, and facility managers rely on properly matched breaker accessories like this one to maintain safe, code-compliant, and efficient power distribution systems.