TJK436F000 - 400Amp Max. *Frame Only*

TJK436F000 - 400 Amp Max. *Frame Only*

The TJK436F000 is a 3-pole, 400-amp molded-case circuit breaker frame designed for you to use in commercial and industrial electrical distribution systems that require dependable circuit protection and equipment compatibility. Built as part of the Type TJK4 Q-Line series, this bolt-on breaker frame is commonly used in switchboards, panelboards, and distribution equipment where maintaining the original system configuration matters. Its compact footprint and durable molded case construction make it well-suited for demanding electrical environments while supporting long-term serviceability in existing installations.

Rated for 22k A.I.C. at 600VAC, 30k A.I.C. at 480VAC, and 42k A.I.C. at 240VAC, the TJK436F000 is engineered to help you manage fault conditions across a range of voltage applications. This unit is also HACR rated, making it suitable for heating, air conditioning, and refrigeration systems where consistent electrical protection is essential. Designed with compatibility and form-fit function in mind, this molded case circuit breaker frame supports reliable integration into legacy power distribution systems and assemblies that require a matching TJK4 configuration.

Key Features and Benefits

• 400-amp molded case circuit breaker frame: Built for commercial and industrial electrical distribution systems requiring dependable protection and compatibility.
• 3-pole configuration: Designed for use in three-phase electrical systems.
• Type TJK4 design: Supports compatible legacy installations and existing electrical assemblies.
• Q-Line series construction: Maintains proper form, fit, and function within matching distribution equipment.
• Bolt-on mounting style: Provides secure installation in switchboards, panelboards, and distribution equipment.
• HACR rated: Suitable for heating, air conditioning, and refrigeration applications where consistent electrical protection is essential.
• Interrupting ratings:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Built for long service life: Designed to perform in demanding commercial and industrial environments while supporting long-term serviceability in existing installations.
  

Technical Specifications

• Part Number: TJK436F000
  
• Type: TJK4
  
• Product Category: Molded Case Circuit Breaker Frame
  
• Series: Q-Line
  
• Mounting Style: Bolt-On
  
• Poles: 3
  
• Amperes: 400A
  
• A.I.C. Rating @ 600VAC: 22k
  
• A.I.C. Rating @ 480VAC: 30k
  
• A.I.C. Rating @ 240VAC: 42k
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• Commercial and Industrial Application Design: The TJK436F000 breaker frame is manufactured for use in commercial and industrial electrical distribution applications where equipment ratings and system compatibility are critical.
• HACR Rated: Designed to meet applicable electrical system requirements for molded-case circuit breaker installations and suitable for HVAC and refrigeration applications.
• Compatibility Verification: Always verify compatibility with the intended panelboard, switchgear, or distribution equipment before installation.
  

Where It Works Best

• The TJK436F000 is commonly used in commercial buildings, industrial facilities, manufacturing plants, HVAC and refrigeration systems, electrical distribution panels, switchboards, and panelboards. It is also well-suited for maintenance and retrofit projects involving existing TJK4 breaker systems. Its bolt-on design and matching Q-Line configuration make it a practical solution for maintaining continuity in established electrical systems where correct fit and electrical ratings are important.