TJJ426250WL - 250Amp Circuit Breaker

TJJ426250WL - 250 Amp Circuit Breaker

The TJJ426250WL molded case circuit breaker is designed for dependable circuit protection in your commercial and industrial electrical distribution systems where consistent overcurrent protection is essential. Built as part of the Q-Line family, this 2-pole, 250-amp breaker features a non-interchangeable thermal-magnetic trip unit with internal common trip functionality to help protect connected equipment from overloads and short circuits. Its cable-in/cable-out lug-lug configuration simplifies installation in compatible panelboards and switchgear applications. At the same time, the included line- and load-side lugs provide added convenience during setup and maintenance.

Engineered for long-term service in demanding electrical environments, the TJJ426250WL combines durable molded case construction with HACR-rated compatibility, making it suitable for HVAC systems, industrial machinery, distribution panels, and heavy-duty commercial applications. With interrupting ratings up to 42k A.I.C. at 240VAC, this breaker is built to last. It supports safe operation across a range of voltage systems commonly found in legacy and existing electrical infrastructure.

Key Features and Benefits

• 250-amp Molded Case Circuit Breaker: Designed for commercial and industrial power distribution applications requiring dependable overcurrent protection.
• 2-Pole Configuration: Suitable for compatible AC electrical systems where dual-pole protection is required.
• Thermal Magnetic Trip Unit: Protects against overloads and short circuits using a non-interchangeable thermal magnetic trip mechanism.
• Internal Common Trip: Helps disconnect both poles simultaneously during fault conditions to improve system protection.
• Q-Line Style Breaker: Suitable for form, fit, and functional replacement applications in compatible electrical systems.
• Lug-Lug Configuration: Cable-in/cable-out design supports straightforward field installation in panelboards and switchgear applications.
• Included Line and Load-Side Lugs: Provides added convenience during installation, maintenance, and replacement projects.
• HACR Rated: Approved for use with heating, air conditioning, and refrigeration equipment applications.
• Durable Molded Case Construction: Intended for long service life in demanding electrical environments.
  

Technical Specifications

• Part Number: TJJ426250WL
  
• Type: TJJ
  
• Product Category: Molded Case Circuit Breaker
  
• Poles: 2
  
• Amperage: 250A
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Configuration: Cable-in/Cable-out (Lug-Lug)
  
• A.I.C. Rating:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• HACR Rated: Yes
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Included Accessories: Line and Load-Side Lugs
  

Material Compliance and Certifications

• HACR Rated: Suitable for heating, ventilation, air conditioning, and refrigeration applications.
• Industry Standards: Designed to meet applicable molded case circuit breaker industry standards for electrical protection equipment.
• System Compatibility: Suitable for use in properly rated commercial and industrial electrical systems.
• Q-Line Compatibility: Manufactured for compatibility with existing Q-Line electrical distribution equipment.
  

Where It Works Best

• The TJJ426250WL circuit breaker is well-suited for commercial buildings, industrial facilities, manufacturing equipment, HVAC systems, distribution panels, and other high-amperage electrical applications requiring dependable overcurrent protection. It is commonly used in existing electrical systems where maintaining compatibility with installed Q-Line equipment is important. Its lug-lug configuration also makes it a practical choice for replacement projects, retrofits, and maintenance operations where form and fit matter.