Eaton LGK3400KSW Molded Case Circuit Breaker - UL Listed
Part Number: LGK3400KSW
Quick Summary
LGK3400KSW molded case circuit breaker protects electrical systems in industrial control panels. Engineers often struggle with space constraints and achieving selective coordination in compact panel layouts. This unit is IEC rated, CSA certified, and UL listed, with CE marking for global compliance. Designed for rugged industrial environments, it delivers 400 A protection with metric mounting hardware for fast, secure installation, reducing commissioning time and field errors. The absence of terminals on the device streamlines wiring and improves panel density, while HACR rating supports motor and load protection.
Product Information
Extended Description
LGK3400KSW Eaton: Eaton Series G, LG-frame Molded Case Circuit Breaker, 400A, no terminals w/ metric mounting hardware, Molded case switch
Product Name
Eaton Series G molded case circuit breaker
Catalog Number
LGK3400KSW
UPC
786679188965
Product Length/Depth
12.5 in
Product Height
6 in
Product Width
7 in
Product Weight
16 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
CE Marked
Certifications
IEC Rated CSA Certified UL Listed
Catalog Notes
LG breaker is HACR rated
Type
Molded case switch
Amperage Rating
400 A
Trip Type
Molded case switch
Series
Series G
Terminals
No terminals
Mounting hardware
Metric
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
Feature: 400 A amperage rating provides robust protection for large feeders and heavy loads. Business Impact: Reduces nuisance trips and improves overall system reliability in demanding environments. Application: Data centers, manufacturing lines, and process control panels benefit from stable protection with minimal maintenance. Feature: Series G molded case switch design delivers predictable trip performance and easy replacement in retrofit projects. Business Impact: Improves uptime and simplifies spare-part logistics. Application: Retrofit and new build projects where quick swap-ins are valuable. Feature: No terminals and metric mounting hardware enable faster, cleaner panel wiring and installation. Business Impact: Cuts install time, reduces wiring errors, and lowers labor costs. Application: Compact control panels and retrofit installations with tight spacing. Feature: 12.5 in length, 6 in height, 7 in width, 16 lb weight combine to a compact yet rugged enclosure footprint. Business Impact: Enhanced panel density without sacrificing protection or accessibility. Application: Wall- or rail-mounted MCCB applications in industrial facilities. Feature: HACR rated with CE Marked, IEC rated, CSA certified, and UL Listed. Business Impact: Ensures compliance across multiple international standards and safe motor protection. Application: Global deployments and equipment requiring broad regulatory conformity.
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FAQs
LGK3400KSW is designed for metric mounting hardware, enabling straightforward panel fitment. Ensure the panel cutout matches standard MCCB dimensions, mount using the supplied metric hardware, and secure wiring with appropriate lugs or adapters if terminals are required externally. Verify clearance around the 12.5 in length and 7 in width to maintain service access and thermal performance.
LGK3400KSW is rated at 400 A with a molded case switch trip mechanism. This combination provides reliable overcurrent protection for high-load feeders and motors, while maintaining precise trip characteristics to minimize unnecessary outages. It is part of Eaton's Series G, designed for durability in demanding industrial environments.
Yes. The LGK3400KSW is HACR rated and supports motor protection requirements in control panels. Its Series G design and HACR rating help protect motors and controlled equipment from overloads while aligning with common building and safety standards. This makes it suitable for HVAC, processing, and manufacturing applications where motors are prevalent.
LGK3400KSW carries UL Listed, CSA Certified, and IEC Rated certifications, along with CE Marking for international compliance. These certifications support global deployments and ensure adherence to safety, reliability, and performance standards across diverse markets.
With a one-year warranty from installation or 18 months from shipment, LGK3400KSW offers solid protection against early failures. Its modular, terminal-free design simplifies wiring, reducing maintenance time during inspections. The 400 A rating supports larger feeders with fewer devices, improving upstream protection coordination and overall system uptime, delivering measurable total cost of ownership reductions.