JL3B150 - 150Amp Circuit Breaker

JL3B150 - 150Amp Circuit Breaker

The JL3B150 gives you a few solid numbers to work from when you're trying to match a breaker already in service. Keep in mind that the 400-amp figure refers to the frame identification; the JL3B150 itself is rated at 150 amps. The JL3B150 is built to last, and its published dimensions, frame designation, and electrical ratings provide practical details to check when sourcing a form, fit, and function replacement for compatible legacy equipment.

Key Features and Benefits

• 150A, three-pole configuration for equipment calling for these specific electrical characteristics.
• JL3 frame provides an important reference when checking compatibility with an existing breaker.
• Type ET, 400 Ampere "JL" Frame identification provides another useful point of reference when matching an existing unit.
• 40°C rating is included in the supplied product specifications.
• Clearly documented ratings help keep replacement selection focused on form, fit, and function rather than amperage alone.
  

Technical Specifications

• Part Number: JL3B150
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: JL3
  
• Amperage: 150A
  
• Poles: 3
  
• AIC Rating at 600VAC: 22 kA
  
• AIC Rating at 480VAC: 30 kA
  
• AIC Rating at 240VAC: 42 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

Specific UL, CSA, IEC, RoHS, REACH, or other certification and material-compliance information was not included in the available JL3B150 specifications. Those approvals should not be assumed. When a particular certification is required for the installation, confirm it on the breaker label or in the applicable manufacturer documentation.

Where It Works Best

The JL3B150 is a practical choice for compatible existing and legacy electrical equipment that requires a 150A, three-pole JL3 molded-case circuit breaker with the same physical dimensions and interrupting ratings.

When matching one to an existing installation, check the whole set of specifications—not just the 150A marking. The JL3 frame, three-pole layout, Type ET identification, physical footprint, system voltage, and required AIC rating should all line up with the application. That makes it easier to determine whether the JL3B150 is the correct form, fit, and functional replacement without making assumptions about compatibility.