DK3250W - 250Amp Circuit Breaker

DK3250W - 250 Amp Circuit Breaker

The DK3250W circuit breaker is a 250 amp, 3-pole thermal magnetic molded case circuit breaker designed for dependable protection in commercial and industrial electrical systems. Built on the K-Frame DK platform, this breaker is engineered to handle demanding power distribution environments where consistent performance and high interrupting capacity are essential. With a 65kA interrupting rating at 240VAC, the DK3250W helps protect electrical circuits and connected equipment from overloads and short-circuit conditions before damage occurs. Its thermal magnetic trip mechanism combines long-time overload protection with fast response during fault events, helping maintain safe system operation. The breaker is also HACR rated, making it suitable for heating, air-conditioning, and refrigeration equipment. Designed for operation in 40°C ambient environments, the DK3250W is commonly used in panelboards, switchboards, and distribution equipment where reliable three-phase protection is required. Please note that terminal lugs are not included, allowing installers to select compatible lugs based on their specific application.

Key Features and Benefits

• 250 Amp current rating for medium to high-capacity electrical circuits
• 3-pole configuration designed for three-phase power systems
• 65kA interrupting capacity at 240VAC for applications with higher available fault current
• Thermal magnetic trip system provides both overload and instantaneous short-circuit protection
• K-Frame DK series design built for dependable performance in commercial and industrial panels
• Non-interchangeable trip unit maintains factory-calibrated protection settings
• HACR rated for HVAC and refrigeration equipment protection
• 40°C ambient rating suitable for typical electrical room environments

Technical Specifications

• Part Number: DK3250W
• Amperage: 250A
• Poles: 3
• Interrupting Rating: 65kA @ 240VAC
• Frame Type: DK (K-Frame)
• Trip Mechanism: Thermal Magnetic
• Trip Unit: Non-Interchangeable
• HACR Rated: Yes
• Ambient Temperature Rating: 40°C
• Lugs: Not Included
• Approximate Height: 10.13 in
• Shipping Weight: 5.5 lbs

Material Compliance and Certifications

• Industry Standards: The DK3250W molded case circuit breaker is manufactured to meet common electrical safety and performance standards for power distribution equipment.
• UL and CSA Requirements: Breakers of this type are typically produced in accordance with UL and CSA requirements for molded case circuit breakers, helping ensure dependable performance when installed within compatible electrical systems.
• Installation Guidelines: Installation should always follow National Electrical Code (NEC) guidelines and applicable regional electrical regulations.

Where It Works Best

• The DK3250W 250A K-Frame breaker is commonly installed in commercial facilities, industrial buildings, and large mechanical systems where dependable three-phase circuit protection is needed. It works well in panelboards, switchboards, motor control equipment, and HVAC distribution systems that operate with higher electrical loads. Because of its 65kA interrupting capacity, it is particularly useful in environments where available fault current may be elevated, such as manufacturing facilities, mechanical rooms, and service distribution equipment.