LL3B600 - 600Amp Circuit Breaker

LL3B600 - 600Amp Circuit Breaker

With an LL3B600, the 600A rating is obvious. The details around it are what really help identify the breaker. You're looking at a 3-pole molded case circuit breaker, Type LL3, identified as Type ET and built around a 600 Ampere LL frame. The supplied specifications also call out a 40°C rating. And don't treat the interrupting capacity as one fixed number. It's 42 kA at 240VAC, 30 kA at 480VAC, and 22 kA at 600VAC. That's useful information when the job is to match a breaker already sitting in existing electrical equipment.

Key Features and Benefits

• 600A rated current
• 3-pole molded case circuit breaker
• LL3 type configuration
• Type ET identification
• 600 Ampere LL frame
• Specified at 40°C
• Clearly stated A.I.C. ratings help with voltage-specific application checks
• Relevant for form, fit, and functional replacement when existing equipment calls for the LL3B600 configuration

Technical Specifications

• Part Number: LL3B600
  
• Product Type: Molded Case Circuit Breaker
  
• Type: LL3
  
• Amperage: 600A
  
• Poles: 3
  
• Frame: 600 Ampere LL Frame
  
• Additional Identification: Type ET
  
• Temperature Rating: 40°C
  
• A.I.C. at 240VAC: 42 kA
  
• A.I.C. at 480VAC: 30 kA
  
• A.I.C. at 600VAC: 22 kA
  
• Width: 9 in.
  
• Height: 11 in.
  
• Depth: 4 in.
  
• Overall Dimensions: 9.00"W x 11.00"H x 4.00"D
  

Material Compliance and Certifications

The information available for the LL3B600 didn't include exact UL, CSA, IEC, RoHS, REACH, or other certification and material-compliance details.

It's better not to fill that gap with specifications taken from a similar LL-frame breaker. If a particular listing or environmental declaration is required for the installation, use documentation that specifically identifies the LL3B600 to verify it.

Where It Works Best

The LL3B600 belongs in a fairly specific replacement situation. You're maintaining existing or legacy electrical equipment, and the equipment calls for this 600A, three-pole LL-frame breaker configuration.

Focus on those details when evaluating an LL3B600 replacement circuit breaker. The point isn't to find another breaker that happens to say 600A. It's to determine whether the breaker matches the form, fit, and function required by the equipment already in service.