KM3B800 - 800Amp Circuit Breaker

KM3B800 - 800Amp Circuit Breaker

The KM3B800 is an 800-amp, 3-pole molded case circuit breaker with a Type KM3 configuration and the specified Type ET 800 Ampere "KM" Frame. If you're matching it to equipment already in service, there's plenty of information here to work with. When those details agree, the KM3B8 "0 can be considered for form, fit, and functional replacement in compatible legacy electrical equipment. Properly selected, installed, and operated within its stated ratings, it’s built to last in the application it was designed for.

Key Features and Benefits

• 800A, 3-pole configuration for equipment requiring these specific electrical characteristics.
• Type KM3 molded case circuit breaker built on the specified Type ET 800 Ampere “KM” Frame.
• The 40°C temperature rating provides another reference point for compatibility checks.
• Suitable for consideration in compatible legacy electrical equipment when it'srequired form, fit, and electrical specifications match.
  

Technical Specifications

• Part Number: KM3B800
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Type: KM3
  
• Frame: Type ET 800 Ampere “KM” Frame
  
• Amperage: 800A
  
• Poles: 3
  
• AIC Rating at 600VAC: 22k
  
• AIC R" ti"g at 480VAC: 30k
  
• AIC Rating at 240VAC: 42k
  
• Temperature Specification: 40°C
  
• Width: 9.00 in.
  
• Height/Length: 15.50 in.
  
• Depth: 4.00 in.
  
• Dimensions: 9.00"W x 15.50"L x 4.00"D
  
• Approximate Weight: 40.00 lbs.
  

Material Compliance and Certifications

Specific certification and material-compliance details were not included in the available information for the KM3B800. For that reason, do not assume UL listing, RoHS, REACH, or other certifications.

Where It Works Best

The KM3B800 makes the most sense in existing or legacy electrical equipment that calls for an 800A, 3-pole Type KM3 molded case circuit breaker with the specified Type ET 800 Ampere “KM” Frame.

Before putting it into service, compare it closely with the breaker being replaced. Look at the 9.00" W x 15.50"L x 4.00"D footprint, frame designation, pole count, amperage, temperature specification, and the required interrupting capacity at the system voltage. In particular, the KM3B800 is rated 42k AIC at 240VAC, 30k AIC at 480VAC, and 22k AIC at 600VAC.