DK2400 - 400Amp Circuit Breaker

DK2400 - 400 Amp Circuit Breaker

The DK2400 400A circuit breaker is a high-capacity 2-pole thermal magnetic breaker designed to protect electrical distribution systems from overloads and short circuits in demanding commercial and industrial environments. Built on the dependable K-Frame platform, this breaker delivers consistent protection with a 65kA interrupting rating at 240VAC, helping safeguard equipment and minimize downtime when faults occur. Its non-interchangeable trip unit ensures calibrated, factory-set performance, while the thermal magnetic mechanism provides both long-time overload protection and instantaneous response to high fault currents. Rated for operation in 40°C environments and HACR applications, the DK2400 is suitable for HVAC systems, heavy machinery circuits, and large panelboard or switchboard installations where dependable protection and steady electrical performance are essential. The breaker ships with line and load lugs included, allowing for straightforward installation in compatible systems and helping technicians complete service work efficiently.

Key Features and Benefits

• High Current Protection: Rated at 400 amps, ideal for large electrical loads in commercial or industrial distribution systems.
• 65kA Interrupting Capacity: Provides strong fault interruption at 240VAC, helping protect equipment from severe short circuits.
• Thermal Magnetic Trip Mechanism: Combines thermal overload protection with magnetic short-circuit response for dependable circuit safety.
• K-Frame Construction: Engineered for stability and reliable operation in demanding electrical environments.
• Non-Interchangeable Trip Unit: Factory-calibrated trip settings maintain consistent protection performance.
• HACR Rated: Suitable for Heating, Air Conditioning, and Refrigeration equipment circuits.
• Installation-Ready: Line and load lugs included, simplifying connection and reducing installation time.
• 40°C Rated Operation: Designed to maintain performance in higher ambient temperature conditions commonly found in equipment rooms and industrial facilities.

Technical Specifications

• Part Number: DK2400
  
• Poles: 2
  
• Amperage Rating: 400A
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity (A.I.C.): 65kA @ 240VAC
  
• Frame Type: DK (K-Frame)
  
• Trip Type: Thermal Magnetic
  
• Trip Unit: Non-Interchangeable
  
• HACR Rated: Yes
  
• Operating Temperature Rating: 40°C
  
• Included Accessories: Line and Load Lugs
  
• Approximate Shipping Height: 10.13 in
  
• Shipping Weight: 5.5 lbs
  

Material Compliance and Certifications

• Manufacturing Materials: This circuit breaker is manufactured using electrical-grade materials designed for durability and long-term electrical reliability.
• Industry Standards: Units of this class are typically produced to meet recognized UL and industry safety standards for molded-case circuit breakers used in commercial and industrial power distribution systems.
• Compliance Assurance: Compliance with these standards supports safe operation, dependable trip performance, and compatibility with properly rated electrical equipment.
  

Where It Works Best

• The DK2400 400A breaker is commonly used in commercial buildings, industrial facilities, and large electrical distribution systems that require dependable protection for high-capacity circuits. It is well suited for HVAC systems, large motors, panelboards, switchboards, and feeder circuits where high interrupting capacity and steady thermal magnetic protection are essential. Electrical contractors and maintenance professionals often rely on this breaker for installations that demand consistent performance and straightforward integration into K-Frame compatible equipment.