JL3B350 - 350Amp Circuit Breaker

JL3B350 - 350Amp Circuit Breaker

The JL3B350 is rated at 350 amps and uses a three-pole JL3 configuration, providing you with clear electrical and physical details for comparison with the breaker already in place. Keep in mind that the 400-amp figure identifies the JL frame; the JL3B350 itself carries a 350A current rating.

Key Features and Benefits

• 350A current rating for systems requiring this specific amperage.
• Three-pole configuration provides a clear compatibility checkpoint for replacement work.
• JL3 frame type helps identify the correct physical and electrical configuration.
• 40°C rated according to the supplied product specifications.
• Identified as Type ET, 400 Ampere "JL" Frame, an additional detail to compare with existing equipment.
• Molded case circuit breaker construction as specified in the available product data.
  

Technical Specifications

• Part Number: JL3B350
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: JL3
  
• Rated Current: 350A
  
• Number of Poles: 3
  
• AIC Rating at 240VAC: 42 kA
  
• AIC Rating at 480VAC: 30 kA
  
• AIC Rating at 600VAC: 22 kA
  
• Temperature Rating: 40°C
  
• Additional Identification: Type ET, 400 Ampere "JL" Frame
  
• Width: 9.00 in.
  
• Height / Length: 11.00 in.
  
• Depth: 4.00 in.
  
• Overall Dimensions: 9.00 in. W × 11.00 in. L × 4.00 in. D
  
• Approximate Ship Weight: 22.00 lb.
  

Material Compliance and Certifications

No specific UL, CSA, IEC, RoHS, REACH, or other material-compliance certifications were included in the supplied specifications for the JL3B350. These approvals should not be assumed.

Where It Works Best

The JL3B350 is suited to compatible existing and legacy electrical equipment that requires a 350A, three-pole molded case circuit breaker with a JL3 frame and the stated physical dimensions and interrupting ratings.

When evaluating it as a form, fit, and functional replacement, compare the 350A rating, three-pole arrangement, JL3 frame, physical dimensions, system voltage, and required AIC rating with the existing installation. The Type ET, 400 Ampere "JL" Frame designation should also be checked during the compatibility review before installation.