Square-D KC342501380 250A 3 Pole Thermal Magnetic MCCB – Plug-In (I-Line) Mount – 600V AC

The Square-D KC342501380 molded case circuit breaker is designed for dependable protection in industrial and commercial power distribution systems. Built on the KC I-Line frame platform, it features a thermal magnetic non-interchangeable trip unit that provides reliable overload and short-circuit protection. Rated at 250 amperes with a 3-pole configuration, this breaker is engineered for plug-in installation in I-Line panelboards and switchgear systems. It comes equipped with a factory-installed 1A-1B auxiliary switch and a 120–240VAC shunt trip, enabling enhanced remote monitoring and tripping functionality for advanced electrical control applications.

Product Specification

• Manufacturer: Square-D
• Model: KC342501380
• Frame Type: KC (I-Line)
• Rated Current (Amperage): 250A at 40°C
• Number of Poles: 3
• Mounting Type: Plug-In (I-Line)
• Trip Unit Type: Thermal Magnetic Non-Interchangeable
• Trip Setting: 1250–2500
• Auxiliary Component: 1A-1B Auxiliary Switch Installed
• Shunt Trip: 120–240VAC Shunt Installed
• Connection Type: Load End Terminals Standard
• Application: Industrial and Commercial Power Distribution

Technical Specification

• Interrupting Capacity:
  • 100 kA @ 240 VAC
  • 65 kA @ 480 VAC
• Protection Type: Overload and Short Circuit Protection
• Operating Mechanism: Thermal Magnetic Trip System
• Lug Type: Standard Load End
• Installation Design: I-Line Plug-In Configuration
• Performance Category: High Interrupting Duty

Voltage and Ratings

• Rated Operational Voltage: 240 / 480 VAC
• Shunt Trip Voltage: 120–240 VAC
• Maximum Voltage Rating: 600 VAC
• Frequency: 50/60 Hz
• Short Circuit Breaking Capacity: Up to 100 kA

Product Data

• Frame Size: K Frame
• Connection Type: Plug-In (I-Line)
• Terminal Type: Load End Standard Lugs
• Installation Type: I-Line Panelboard / Switchgear
• Configuration: 3 Pole MCCB
• Included Accessories:
  • 1A-1B Auxiliary Switch
  • 120–240VAC Shunt Trip
• Warranty: 1 Year (Applicable for new and certified reconditioned products)

Important Note

This product image is intended for identification purposes only and may represent a base model. Actual breaker configuration may vary depending on installed accessories or application requirements. Accessories ordered together with the breaker can be installed at no additional cost when complete configuration details are provided during checkout.

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You may return items within 30 days of delivery for a refund.

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