Eaton Molded Case Circuit Breaker 400A Three-Pole 600V AC Series C KD Type Fixed Thermal Magnetic

Eaton Series C Complete Molded Case Circuit Breaker

Professional Heavy-Duty Electrical Protection Equipment

The Eaton Series C KD Type Molded Case Circuit Breaker delivers exceptional electrical power management and control performance for heavy-duty commercial and industrial applications. This 400A three-pole circuit breaker provides reliable electrical protection designed for professional electricians, electrical contractors, and facility managers, offering the proven reliability and advanced technology that professionals trust from the global leader in intelligent power management.

Professional Features & Benefits

Heavy-Duty Electrical Protection

• 400 Ampere Rating - High-capacity current handling for demanding commercial and industrial electrical systems with reliable overcurrent protection
• Three-Pole Configuration - Complete three-phase electrical protection for balanced power distribution in commercial facilities and industrial equipment
• 600V AC / 250V DC Voltage Rating - Versatile voltage compatibility for both AC and DC electrical systems in diverse professional applications
• 65 kAIC Interrupt Rating at 240V AC - Superior fault current interruption capability ensuring electrical safety and system protection during short circuit conditions

Advanced Trip Technology

• Fixed Thermal and Magnetic Trip - Dual protection mechanism providing precise overload and short circuit protection for comprehensive electrical system safety
• Series C K-Frame Design - Robust construction with proven reliability for demanding electrical environments and professional installations
• Complete Breaker Assembly - Ready-to-install unit with all components integrated for efficient professional electrical system installation

Professional Installation Features

• Line and Load Terminals - Professional-grade aluminum terminals ensuring secure electrical connections and optimal conductivity
• UL Listed Certification - Meets rigorous electrical safety standards for professional electrical installations and code compliance

Technical Specifications

Amperage Rating: 400A, Voltage Rating: 600V AC / 250V DC, Number of Poles: Three-pole, Interrupt Rating: 65 kAIC at 240V AC / 35 kAIC at 480V AC, Series: Series C, Frame: K-frame, Circuit Breaker Type: KD Type, Trip Type: Fixed thermal and fixed magnetic, Terminal Material: Aluminum, Terminals: Line and load, Frequency Rating: 50/60 Hz, Dimensions: 4.25" L x 3.75" W x 1" H, Weight: 11.5 lbs, Certifications: UL Listed

Installation & Usage

1. Verify electrical system compatibility with 400A three-pole requirements and voltage specifications
2. Ensure proper electrical panel or switchgear mounting space for K-frame dimensions
3. Connect line-side conductors to line terminals following NEC guidelines and manufacturer torque specifications
4. Connect load-side conductors to load terminals ensuring proper phase sequence and secure connections
5. Test breaker operation and verify proper trip function before energizing electrical system
6. Document installation details and provide system commissioning records for facility maintenance

Professional Applications

Ideal for:

• Industrial Power Distribution - Main distribution panels, motor control centers, and heavy-duty industrial electrical systems
• Commercial Electrical Systems - Large commercial buildings, office complexes, and retail facilities requiring high-amperage protection
• Manufacturing Facilities - Production equipment protection, process control systems, and industrial machinery electrical feeds
• Data Centers - Critical power distribution systems, UPS feeds, and server room electrical protection
• Healthcare Facilities - Hospital electrical systems, medical equipment protection, and emergency power distribution
• Educational Institutions - School electrical systems, laboratory power distribution, and campus facility electrical protection
• Municipal Applications - Water treatment facilities, municipal buildings, and public infrastructure electrical systems
• Switchgear Applications - Main switchboards, distribution switchgear, and electrical service entrance equipment

Series C Technology Advantage

Eaton's Series C molded case circuit breakers feature advanced fixed thermal and magnetic trip technology providing precise overcurrent protection. The K-frame design offers superior mechanical strength and electrical performance, while the dual-voltage rating capability ensures versatility across diverse electrical applications. The 65 kAIC interrupt rating at 240V AC provides exceptional fault current protection for demanding electrical environments.

Why Choose Eaton Quality?

With over a century of electrical power management innovation, Eaton delivers unmatched reliability and performance in professional electrical protection equipment. Our UL Listed molded case circuit breakers meet the highest electrical safety standards, providing the dependable protection that electricians, electrical contractors, and facility professionals trust worldwide. Eaton's commitment to electrical safety, advanced engineering, and proven performance makes us the preferred choice for critical electrical power distribution and protection applications.