KC34125 - 125 Amp Circuit Breaker

KC34125 - 125 Amp Circuit Breaker

Meet the KC34125, a high-performance 125 Amp circuit breaker built for industrial and commercial environments that demand dependable protection. Designed to slot right into standard I-Line panelboards, it safeguards your electrical systems with both thermal and magnetic trip responses—so whether the load creeps too high or a sudden short occurs, this breaker reacts fast. With high fault current capacity and built for hot, heavy-use settings, the KC34125 is your go-to for keeping power systems stable under pressure.

Key Features and Benefits

• High Interrupting Capacity (AIC): Offers up to 65,000 AIC at 480 VAC and 100,000 AIC at 240 VAC, giving you room to manage unexpected fault currents with confidence.
• Dual-Mode Protection (Thermal + Magnetic): Detects both overcurrent and short circuits, adapting its response to protect equipment without nuisance trips.
• Built for Tough Conditions: Rated for operation at 60 Hz and in ambient temperatures up to 40 °C, it stays stable in challenging environments.
• Precision & Consistency: Each unit is calibrated to provide consistent performance over its service life—no surprises.
• Space-Efficient Design: Its molded-case format fits neatly into panelboards, saving you valuable panel space while delivering complete protection.

Technical Specifications

• Poles: 3
  
• Rated Current: 125 A
  
• Frame Type: KC
  
• Interrupting Rating:
  • 65 kA @ 480 VAC
  • 100 kA @ 240 VAC
• Frequency: 60 Hz
  
• Max Ambient: 40 °C
  
• Dimensions:
  • Width: 4.50″
  • Length: 10.50″
  • Depth: 4.38″
• Weight: Approx. 12 lbs
  
• Type: Molded-case, thermal-magnetic circuit breaker
  

Material Compliance and Certifications

• Quality and Standards: This breaker is manufactured using UL-listed, high-grade electrical materials, and meets or exceeds ANSI/IEEE standards for low-voltage circuit protection. Every unit is tested for quality, ensuring your installation stays safe and code-compliant. You can trust it in regulated settings where certification matters.

Where It Works Best

• Industrial Plants: Protect heavy machinery, motor drives, or critical power distribution circuits.
• Commercial Buildings: Secure HVAC systems, lighting banks, and large panelboards.
• Infrastructure & Utility Installations: Provide protection in on-site substations, power houses, or facility expansion projects.
• Retrofits & Upgrades: Perfect when replacing older breakers in I-Line panels to keep continuity while upgrading protection.