MA3450 - 450 Amp Circuit Breaker

MA3450 - 450 Amp Circuit Breaker

When you're matching a replacement breaker for existing electrical equipment, the details matter. The MA3450 is a 450 amp, 3-pole MA thermal-magnetic circuit breaker with an interchangeable trip unit, a 40°C rating, and load-side terminals. Its interrupting ratings are clearly defined at 22kA at 600VAC, 30kA at 480VAC, and 42kA at 240VAC, making it easier to compare the breaker directly with the existing system requirements.

Key Features and Benefits

• 450 Amp Rating: Provides the specified 450A current rating for applications requiring this exact breaker capacity.
• 3-Pole Configuration: Three-pole construction makes pole configuration straightforward to verify against the existing breaker and equipment.
• Thermal-Magnetic Circuit Breaker: Uses the specified thermal-magnetic configuration.
• Interchangeable Trip Unit: The interchangeable trip unit is an important form-and-function characteristic to confirm when replacing an existing MA breaker.
• 40°C Rated: Carries the specified 40°C temperature rating.

Technical Specifications

• Part Number: MA3450
  
• Type: MA
  
• Product Type: Thermal Magnetic Circuit Breaker
  
• Amperes: 450A
  
• Poles: 3
  
• Temperature Rating: 40°C
  
• Trip Unit: Interchangeable
  
• A.I.C. Rating & Volts: 22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
  
• Terminals: Load-side terminals included
  
• Height: 16.0 in.
  
• Width: 8.25 in.
  
• Depth: 4.0 in.
  
• Dimensions: 8.25"W x 16.00"L x 4.00"D
  
• Approximate Shipping Weight: 50.00 lbs.
  

Material Compliance and Certifications

The available specifications did not include specific material compliance information, agency certifications, or electrical listings for the MA3450. Therefore, do not assume UL, IEC, RoHS, REACH, or other certifications.

Where It Works Best

The MA3450 450A 3-pole circuit breaker suits compatible existing and legacy electrical equipment that calls for an MA-type thermal magnetic breaker with a 450A rating, interchangeable trip unit, and 40°C rating.