KC34250 - 250 Amp Circuit Breaker

KC34250 - 250 Amp Circuit Breaker

When you need dependable protection for large electrical systems, the KC34250 250 Amp Circuit Breaker delivers. Engineered with thermal-magnetic trip technology, this 3-pole breaker shields your equipment from both overloads and short circuits. Its high interrupting ratings—65 kA at 480 VAC and 100 kA at 240 VAC—make it a strong choice for infrastructures demanding reliable fault interruption. The compact molded case design helps you integrate it into existing I-Line panelboards with ease, so you spend less time installing and more time keeping your system online.

Key Features and Benefits

• Thermal-Magnetic Protection: Combines overload (thermal) and short-circuit (magnetic) sensing in one unit, giving you dual-layer defense for safer operation.
• High Fault Interruption Capacity: Rated for 65 kA at 480 VAC and 100 kA at 240 VAC, offering confidence in high-demand environments.
• Molded Case Construction: The plastic housing resists mechanical stress and heat aging, helping extend lifespan under tough conditions.
• I-Line Compatibility: Designed to snap into I-Line style panelboards without additional adapters, simplifying deployment.
• Efficient Operation at 60 Hz: Optimized for standard industrial and commercial power frequencies, helping reduce losses and thermal issues.

Technical Specifications

• Frame Type: KC
• Rated Current: 250 Amps
• Poles: 3
• Interrupting Ratings:
  • 65 kA @ 480 VAC
  • 100 kA @ 240 VAC
• Frequency: 60 Hz
• Maximum Ambient: 40 °C
• Dimensions:
  • Width: 4.50 inches
  • Length: 10.50 inches
  • Depth: 4.38 inches
• Weight: ~12 lbs
• Device Type: Molded-Case, Thermal-Magnetic

Material Compliance and Certifications

• This breaker is built using materials that meet environmental and industry safety standards. It is certified to UL and ANSI requirements, giving you assurance that both the design and manufacture adhere to rigorous quality controls.
• All components follow applicable safety regulations so the product can be depended on in real-world installations.

Where It Works Best

• Industrial Plants & Factories: For handling heavy machinery loads or motor banks that need consistent protection.
• Commercial Structures: Suitable for large office buildings, malls, or retail centers requiring dependable power control.
• Data Centers & Server Rooms: Helps maintain system reliability under high-stress electrical demands.
• Utility & Infrastructure Applications: Ideal in electrical rooms, substations, or service entrances where fault tolerance is crucial.