DK2400W - 400Amp Circuit Breaker

DK2400W - 400 Amp Circuit Breaker

The DK2400W circuit breaker is a high-capacity 2-pole, 400-amp thermal magnetic breaker designed to provide dependable overcurrent and short-circuit protection in demanding electrical distribution systems. Built on a K-Frame platform, this breaker combines thermal overload protection with instantaneous magnetic trip response to help safeguard equipment and wiring from potentially damaging current conditions. With an interrupting rating of 65kA at 240VAC, the DK2400W is engineered for environments where fault currents can be significant and reliable protection is essential. Its non-interchangeable trip unit ensures consistent performance calibrated to the breaker’s specifications, while the HACR rating makes it suitable for heating, air conditioning, and refrigeration applications. Designed for operation at 40°C, the breaker supports stable performance in typical commercial and industrial electrical rooms. Please note that lugs are not included, allowing installers to select compatible connections based on their specific application.

Key Features and Benefits

• High Interrupting Capacity: Rated 65kA at 240VAC to manage high fault current environments.
• 400 Amp Current Rating: Suitable for heavy-duty electrical distribution and large load protection.
• Thermal Magnetic Protection: Combines inverse-time thermal overload protection with instantaneous magnetic trip for short circuits.
• K-Frame Construction: Designed for dependable operation in commercial and industrial power systems.
• HACR Rated: Approved for use in heating, air-conditioning, and refrigeration equipment circuits.
• Non-Interchangeable Trip Unit: Factory-set trip calibration ensures consistent protection performance.
• Flexible Installation: Lugs are not included, allowing installers to select compatible termination hardware.
• 40°C Performance Rating: Designed to operate effectively in standard electrical equipment environments.

Technical Specifications

• Part Number: DK2400W
  
• Poles: 2
  
• Amperage Rating: 400A
  
• Interrupting Rating: 65kA @ 240VAC
  
• Frame Type: DK (K-Frame)
  
• Trip Type: Thermal Magnetic
  
• Trip Unit: Non-Interchangeable
  
• HACR Rating: Yes
  
• Operating Temperature Reference: 40°C
  
• Approximate Shipping Weight: 5.5 lbs
  
• Shipping Dimensions (Height): 10.13 in
  
• Lugs: Not included
  

Material Compliance and Certifications

• Industry Standards: The DK2400W circuit breaker is designed to meet industry expectations for electrical safety, durability, and performance in power distribution equipment. Circuit breakers in this class are manufactured to align with recognized electrical standards used in commercial and industrial installations, supporting safe system protection when installed according to applicable electrical codes and manufacturer guidelines.

Where It Works Best

• The DK2400W 400A circuit breaker is commonly used in commercial facilities, industrial electrical systems, and large mechanical equipment circuits where higher amperage protection is required. Its HACR rating makes it especially useful for HVAC equipment, refrigeration systems, and large air-handling units. The breaker also fits well in distribution panels, switchboards, and feeder circuits that require dependable high-capacity protection against overloads and short circuits. Its high interrupting rating makes it appropriate for installations where available fault current levels are elevated, helping maintain safe and stable electrical operation.