TJJ436350 **Older Style** - 350Amp Circuit Breaker

TJJ436350 **Older Style** - 350 Amp Circuit Breaker

The TJJ436350 Older Style Black Face molded case circuit breaker is designed for dependable protection in your commercial and industrial electrical distribution systems where maintaining compatibility with existing equipment is essential. Built as part of the trusted Q-Line series, this 3-pole breaker features a non-interchangeable thermal magnetic trip unit with internal common trip functionality to help you protect connected equipment from overloads and short circuits. With a 350-amp rating and bolt-on mounting design, the TJJ436350 is commonly used in switchboards, panelboards, and distribution equipment requiring reliable circuit protection in legacy installations. Its included load-side lugs help simplify installation, while the durable molded case construction is built to withstand demanding electrical environments over time.

Key Features and Benefits

• Commercial and Industrial Applications: Designed for use in commercial and industrial power distribution systems.
• Legacy Equipment Compatibility: Older style black face configuration for compatibility with existing installations.
• Secure Bolt-On Design: Q-Line bolt-on mounting design helps provide secure electrical connections.
• Thermal Magnetic Trip Protection: Thermal magnetic trip unit responds to both overload and short-circuit conditions.
• Internal Common Trip Functionality: Internal common trip mechanism disconnects all poles simultaneously during fault conditions.
• HACR Rated: HACR rated for heating, air conditioning, and refrigeration applications.
• Included Load-Side Lugs: Includes load-side lugs for added installation convenience.
• Durable Molded Case Construction: Molded case construction built for long-term durability in demanding environments.
• Legacy System Serviceability: Suitable for maintaining and servicing legacy electrical systems requiring matching form and fit.
  

Technical Specifications

• Part Number: TJJ436350
  
• Type: TJJ
  
• Series: Q-Line
  
• Breaker Style: Older Style Black Face
  
• Poles: 3
  
• Amperage Rating: 350A
  
• Trip Unit: Thermal Magnetic, Non-Interchangeable
  
• Mounting Type: Bolt-On
  
• Interrupting Capacity:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Included Accessories: Load-Side Lugs
  
• Protection Type: Internal Common Trip
  

Material Compliance and Certifications

• HACR Rated: HACR Rated.
• UL-Listed Equipment Compatibility: Manufactured for use in UL-listed electrical distribution equipment when installed according to applicable codes and manufacturer specifications.
• Commercial and Industrial Construction: Molded case construction designed for commercial and industrial electrical applications.
• Overcurrent Protection Applications: Intended for use in systems requiring properly rated overcurrent protection devices.
  

Where It Works Best

• The TJJ436350 circuit breaker is well suited for commercial buildings, manufacturing facilities, distribution panels, mechanical equipment rooms, and industrial power systems that require a 350A, 3-pole bolt-on breaker. It is especially useful in facilities maintaining existing Q-Line electrical equipment where matching dimensions, mounting configuration, and electrical ratings are important for continued operation and service compatibility.