Eaton LGX340035B21G Complete Molded Case Circuit Breaker - 200 kAIC at 240/480 Vac
Part Number: LGX340035B21G
Quick Summary
The Eaton LGX340035B21G complete molded case circuit breaker provides reliable overcurrent protection for industrial electrical panels. Engineers often struggle with nuisance trips, poor selective coordination, and downtime when selecting MCCBs for high-current motor and distribution circuits. This unit carries UL Listed, IEC rated, and CSA certified markings, with 65 kAIC at 600 Vac and 200 kAIC at 240/480 Vac to support global compliance. Designed for LG frames and three-pole configurations, it integrates a Digitrip 310 RMS electronic trip and a ground fault alarm for enhanced diagnostics. From panel builders to OEMs, this model helps streamline installation and improve reliability while delivering strong protection against faults and arc events. Its 50/60 Hz compatibility and metric mounting simplify field upgrades and production line rollouts.
Product Information
Extended Description
LGX340035B21G Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Digitrip 310 RMS, Electronic LSG trip, Three-pole, 400A, 200 kAIC at 240/480 Vac, 65 kAIC at 600 Vac, Line/load, Metric, Ground fault alarm with right-hand trip, 50/60 Hz, 80% rated
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
LGX340035B21G
UPC
786685445977
Product Length/Depth
4.09 in
Product Height
5.48 in
Product Width
5.48 in
Product Weight
15.3 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
UL Listed IEC Rated CSA Certified
Catalog Notes
LG breaker is HACR rated
Type
Complete breaker
Amperage Rating
400 A
Trip Type
Electronic LSG
Circuit breaker type
LG
Circuit breaker frame type
Complete breaker
Alarm lockout
Ground fault alarm with right-hand trip
Rating
80% rated
Series
Series G
Terminals
Line and load
Frame
LG
Frequency rating
50 to 60 Hz
Mounting hardware
Metric
Interrupt rating
65 kAIC at 600 Vac 200 kAIC at 240/480 Vac
Number of poles
Three-pole
Application of Tap Rules to Molded Case Breaker Terminals
Application of Tap Rules to Molded Case Breaker Terminals
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
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: Digitrip 310 RMS electronic trip provides precise, rapid overcurrent protection. Business Impact: Improves selectivity and reduces nuisance trips, decreasing unplanned downtime for motor systems and critical loads. Application: Ideal for control panels and MCCs in manufacturing lines where dependable protection is essential. Feature: Ground fault alarm with right-hand trip enhances fault visibility. Business Impact: Accelerates fault diagnosis and improves personnel safety in process industries and laboratories. Application: Suitable for facilities with stringent leakage protection requirements and HACR-rated installations. Feature: High interrupt rating of 65 kAIC at 600 Vac and 200 kAIC at 240/480 Vac. Business Impact: Supports robust fault handling in heavy machinery and distribution feeders, reducing arc energy exposure. Application: Preferred for large motors and high-demand power circuits. Feature: LG frame, three-pole configuration, 400 A rating. Business Impact: Enables compact, modular protection for multi-line panels with straightforward replacement and upgrade paths. Application: Common in panel boards, motor control centers, and control panels. Feature: Metric mounting hardware and line/load terminals simplify installation. Business Impact: Cuts real-world install time and minimizes field wiring errors, improving project timelines. Application: Works with standard metric enclosures and panel assemblies in global facilities. Feature: Series G, HACR rated, and CE Marked with UL Listed and CSA Certified status. Business Impact: Streamlines compliance and certification efforts across regions, reducing time-to-commission. Application: Used by OEMs and panel shops building solutions for international markets. Feature: Ground fault alarm compatibility and 80% rated performance at 50/60 Hz. Business Impact: Supports safer operation and energy management in mixed-voltage facilities while ensuring efficiency. Application: Suitable for facilities with variable input conditions and safety requirements. Feature: Comprehensive specifications include 4.09 in depth, 5.48 in height and width, and a 15.3 lb weight. Business Impact: Provides a predictable footprint for layout planning and reduces handling challenges during installation. Application: Beneficial for retrofit projects and new builds in space-constrained environments.
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FAQs
The LGX340035B21G is designed for the LG frame and uses metric mounting hardware, aligning with standard panel builders’ practices. It features line and load terminals for straightforward wiring, a three-pole arrangement, and a 4.09 in depth footprint, enabling easy integration into existing control panels and new builds alike.
Key performance specs include a 400 A amperage rating, electronic Digitrip 310 RMS trip, 65 kAIC interrupt rating at 600 VAC, and 200 kAIC at 240/480 VAC. The device is UL Listed, IEC Rated, and CSA Certified, with a ground fault alarm and HACR capability to support coordinated protection.
Best suited for control panels, motor control centers, and distribution boards in 50/60 Hz environments, the LGX340035B21G supports heavy motor loads and high-current circuits. Industries including manufacturing, process automation, and packaging benefit from its high interrupt capacity, diagnostic features, and global certification compatibility.
This MCCB is UL Listed, IEC Rated, CSA Certified, and CE Marked. These certifications confirm product safety and performance across North American and international markets, simplifying audits, reducing compliance risk, and speeding up installation approvals in diverse regulatory environments.
Eaton provides a warranty policy of one year from installation or eighteen months from shipment, whichever occurs first. This reduces financial risk for startups and extensions, while reliable trip performance lowers downtime costs and extends panel life, delivering a favorable return on investment in mission-critical applications.