TJD432400WL **Older Style** 400A Circuit Breaker

TJD432400WL **Older Style** 400A Circuit Breaker

The TJD432400WL Older Style Black Face circuit breaker is a 3-pole, 400-amp molded case circuit breaker designed for your dependable protection in commercial and industrial electrical distribution systems. Built as part of the trusted Q-Line family, this breaker features a cable-in/cable-out lug-lug configuration and an internal common trip mechanism that helps you to disconnect all poles simultaneously during overload or short-circuit conditions. Its older style black face design makes it a practical form, fit, and functional replacement for existing compatible installations where maintaining system consistency matters. Constructed for long-term service in demanding environments, the TJD432400WL includes both line-side and load-side lugs for streamlined installation and secure conductor termination.

Key Features and Benefits

• 400-amp molded case circuit breaker: Designed for commercial and industrial power distribution.
• 3-pole configuration: Intended for three-phase electrical systems.
• Older Style Black Face design: Provides compatibility with legacy equipment setups.
• Internal common trip mechanism: Helps provide coordinated circuit interruption during overload or short-circuit conditions.
• Cable-in/cable-out (lug-lug) connection style: Supports straightforward installation.
• Includes line-side and load-side lugs: Helps support secure conductor termination.
• HACR rated: Suitable for use in heating, air conditioning, and refrigeration applications.
• Q-Line series construction: Known for durability and long service life.
• Compact molded case design: Helps conserve panel space while maintaining reliable protection.
  

Technical Specifications

• Part Number: TJD432400WL
  
• Type: TJD
  
• Product Style: Older Style Black Face
  
• Poles: 3
  
• Amperes: 400A
  
• Voltage Rating: 240VAC
  
• A.I.C. Rating: 22kA @ 240VAC
  
• Connection Type: Cable-in/Cable-out (Lug-Lug)
  
• Trip Type: Internal Common Trip
  
• Series: Q-Line
  
• HACR Rated: Yes
  
• Included Accessories: Line and Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• Commercial and Industrial Use: The TJD432400WL molded case circuit breaker is manufactured for use in commercial and industrial electrical systems requiring dependable circuit protection and compatibility with applicable electrical standards.
• HACR Rating: Its HACR rating supports use in HVAC and refrigeration-related applications where approved protection devices are required.
• Installation Guidance: Proper installation should always follow local electrical codes and manufacturer guidelines.
  

Where It Works Best

• The TJD432400WL is commonly used in commercial buildings and tenant spaces, industrial control panels and distribution equipment, HVAC and refrigeration systems, manufacturing facilities, electrical distribution panels requiring 400A three-phase protection, retrofit and replacement projects involving compatible Q-Line systems, and facilities maintaining older electrical infrastructure and matching breaker styles. Designed to provide consistent circuit protection while fitting compatible legacy systems, the TJD432400WL remains a practical solution for maintaining existing electrical distribution equipment with confidence.