SQUARE D KC34250

The Square D KC34259 is a high-reliability, 3-pole molded case circuit breaker designed for use in standard unit-mount enclosure applications. Part of the legacy K-Frame family, this 250-Amp breaker provides essential overcurrent and short-circuit protection for industrial and commercial electrical systems.

Built with a thermal-magnetic trip unit, the KC34250 offers a "Long-Time" delay for handling temporary overloads and an "Instantaneous" trip for high-level fault protection. Its lug-in / lug-out configuration allows for direct wire connections on both line and load sides.

Key Specifications:

• Manufacturer: Square D (Schneider Electric)

• Catalog Number: KC34250

• Frame Type: K-Frame (High-Interrupting)

• Amperage: 250 Amp

• Voltage Rating: 480V AC / 250V DC

• Number of Poles: 3-Pole

• Phase Connection: Standard

• Mounting Type: Unit Mount (Lug-In / Lug-Out)

• Trip Unit: Thermal-Magnetic (Non-Interchangeable)

Interrupting Ratings (AIC):

• 240V AC: 65 kA

• 480V AC: 35 kA

• 250V DC: 10 kA

Features & Benefits:

• Flexible Unit-Mount Design: Built for direct mounting in individual enclosures and switchboards, utilizing line and load mechanical lugs.

• Durable Construction: Built with heavy-duty molded materials to withstand demanding industrial environments.

• Reliable Circuit Protection: Proven thermal-magnetic technology ensures accurate trip responses to overloads and high-fault currents.

• Standards Compliance: UL Listed and CSA Certified for safety and performance reliability.

Physical Dimensions:

• Height: 8.00 in

• Width: 4.50 in

• Depth: 4.75 in

• Wire Range: Accommodates (1) #4 AWG to 350 kcmil (Aluminum or Copper)