MES3800LSIG - 800Amp Trip Unit

MES3800LSIG - 800Amp Trip Unit

Replacing a trip unit requires attention to several details. The MES3800LSIG is an 800-amp, three-pole electronic trip unit designed for Series C, Frame J-K equipment with LSIG trip type and ground-fault protection.

When you're selecting a replacement, consider the complete combination of catalog number, frame size, amperage, pole count, trip type, protection needs, and physical fit—not just the amperage.

Key Features and Benefits

• 800A Rating: Rated at 800 amps, providing a clear electrical specification for replacement matching.
• LSIG Trip Type: The MES3800LSIG is specifically identified with an LSIG trip type, an important detail when matching the existing trip-unit configuration.
• Electronic Trip Unit: Manufacturer data classifies this model as electronic.
• Series C, Frame J-K: Both identifiers should be checked against the existing breaker equipment before installation.
• Three-Pole Configuration: Specified as a three-pole trip unit.
• Ground-Fault Protection: The product specifications explicitly list ground-fault protection.
• UL Listed: The supplied certification for MES3800LSIG is UL Listed.

Technical Specifications

• Catalog Number: MES3800LSIG
  
• Global Catalog Number: MES3800LSIG
  
• Product Name: Molded Case Circuit Breaker Accessory Trip Unit
  
• Product Type: Molded Case Circuit Breaker Accessory
  
• Type: Electronic
  
• Series: Series C
  
• Frame Size: Frame J-K
  
• Amperage Rating: 800A
  
• Number of Poles: Three-pole
  
• Trip Type: LSIG
  
• Protection: Ground fault
  
• Product Length/Depth: 9 in.
  
• Product Height: 10 in.
  
• Product Width: 6 in.
  
• Product Weight: 7.5 lb.
  
• UPC: 782114371381
  

Material Compliance and Certifications

• Certification: UL Listed
• Material Compliance: The supplied product data did not include specific RoHS, REACH, or other material-compliance information, and you should not assume it.

Where It Works Best

The MES3800LSIG 800A electronic trip unit is best considered a form, fit, and functional replacement candidate for compatible existing or legacy electrical equipment that requires its specific Series C, Frame J-K, 800A, three-pole, LSIG electronic trip-unit configuration with ground-fault protection.

Before deciding on a replacement, compare the existing equipment with the MES3800LSIG catalog number, 800A rating, Frame J-K designation, Series C identification, three-pole configuration, LSIG trip type, protection requirement, and physical dimensions. Matching only the amperage is not enough to establish compatibility.