Eaton LGH3400FAW Molded Case Breaker - 100 kAIC at 240V
Part Number: LGH3400FAW
Quick Summary
Molded Case Circuit Breaker LGH3400FAW provides reliable overload and short-circuit protection for electrical distribution panels in industrial environments. Engineers often wrestle with nuisance tripping, space constraints, and regulatory compliance during panel upgrades. This unit carries IEC Rated, UL Listed, and CSA Certified marks, with HACR rating for motor loads, helping align with safety and performance standards. As part of Eaton’s Series G MCCB family, it offers robust protection and predictable coordination, while its compact LG frame supports easier installation in shared spaces. The combination of high interrupt ratings and 400 A capacity translates into meaningful uptime gains for machine builders and facilities teams.
Product Information
Extended Description
LGH3400FAW Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Fixed thermal, adjustable magnetic trip, Three-pole, 400A, 100 kAIC at 240 Vac, 65 kAIC at 480 Vac, 35 kAIC at 600 Vac, Without terminals, 50/60 Hz, 80% rated
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
LGH3400FAW
UPC
782116141777
Product Length/Depth
4.09 in
Product Height
5.48 in
Product Width
5.48 in
Product Weight
13.5 lb
Compliances
CE Marked
Certifications
IEC Rated UL Listed CSA Certified
Catalog Notes
LG breaker is HACR rated
Amperage Rating
400 A
Trip Type
T185
Circuit breaker type
LG
Circuit breaker frame type
Complete breaker
Rating
80% rated
Series
Series G
Terminals
Without terminals
Frame
LG
Frequency rating
50 to 60 Hz
Interrupt rating
35 kAIC at 600 Vac 65 kAIC at 480 Vac 100 kAIC at 240 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
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: LG frame, three-pole design, 400 A rating. Business Impact: Enables high-current protection in standard panels with predictable coordination, reducing the risk of nuisance outages. Application: Suitable for main feeders and distribution panels in manufacturing lines. Feature: Interrupt ratings across voltages (100 kAIC at 240 Vac, 65 kAIC at 480 Vac, 35 kAIC at 600 Vac). Business Impact: Supports diverse loads and enhanced short-circuit withstand, aiding regulatory compliance. Application: Panel assemblies in mixed-voltage environments. Feature: 50/60 Hz operation and 80% rated. Business Impact: Optimizes efficiency under variable loading, improving energy management and component longevity. Application: Continuous operation in process lines and machinery. Feature: Without terminals; catalog notes HACR rated. Business Impact: Encourages compact, modular installation with accessory compatibility; HACR rating improves motor protection compliance. Application: Motor control centers and panel boards with HACR-friendly configurations. Feature: 4.09 in depth, 5.48 in height and width, 13.5 lb weight. Business Impact: Clear footprint aids enclosure design and reduces installation time. Application: Retrofit projects and new panel builds with space optimization. Feature: CE Marked, IEC Rated, UL Listed, CSA Certified. Business Impact: Ensures global compliance and faster procurement for multinational facilities. Application: Global manufacturing environments needing standardized protection.
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FAQs
LGH3400FAW is a three-pole LG-frame molded case circuit breaker designed for standard electrical distribution panels. It fits Eaton Series G MCCB configurations and requires appropriate terminal accessories or lugs since it is specified as without terminals. Confirm enclosure compatibility and accessory kits with your panel manufacturer or distributor to ensure proper termination, mounting, and coordination with adjacent devices.
The LGH3400FAW features interrupt ratings of 100 kAIC at 240 Vac, 65 kAIC at 480 Vac, and 35 kAIC at 600 Vac. These ratings indicate the breaker’s capacity to interrupt short-circuit currents without sustaining damage, enabling safer operation across diverse industrial loads and wiring schemes.
Yes, the LGH3400FAW is HACR rated for motor protection applications. It carries IEC Rated, UL Listed, and CSA Certified marks, plus CE compliance. These certifications support safe operation, regulatory adherence, and global procurement without requiring additional approvals for many industrial environments.
80% rated means the breaker is intended for continuous operation at up to 80% of its nominal current. For a 400 A device, that implies up to 320 A continuous load capacity. This helps engineers design safe, reliable panels with sustainable overload protection while accommodating peak demand within regulatory limits.
The 'Without terminals' designation means you must supply appropriate termination accessories (lugs or terminal kits) compatible with the LG frame. Plan for correct conductor sizing, torque specifications, and accessory availability to ensure reliable terminations, proper heat dissipation, and maintenance access within the enclosure.