Eaton LGH4300FAG Complete MCCB - UL Listed IEC Rated
Part Number: LGH4300FAG
Quick Summary
Eaton LGH4300FAG molded case circuit breaker provides robust overcurrent protection for industrial feeders and control panels. Engineers often struggle to select a device that delivers high fault current handling while fitting fixed-thermal and adjustable-magnetic trips in limited panel space. This unit is CSA Certified, UL Listed, and IEC Rated, ensuring regulatory compliance across North American and international installations. For projects requiring reliability and ease of installation, the LG frame supports metric mounting and line-and-load terminals, delivering predictable performance and reduced commissioning time. This Series G MCCB translates to lower total cost of ownership through streamlined spare-parts availability and faster maintenance in harsh industrial environments. Its fixed rating and plug-in readiness also help procurement teams reduce lead times and stock-keeping costs.
Product Information
Extended Description
LGH4300FAG Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Fixed thermal, adjustable magnetic trip, Four-pole, 300A, 100 kAIC at 240 Vac, 65 kAIC at 480 Vac, 35 kAIC at 600 Vac, Line and load, Metric, 50/60 Hz, 80% rated
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
LGH4300FAG
UPC
782116142804
Product Length/Depth
4.09 in
Product Height
7.22 in
Product Width
7.22 in
Product Weight
20 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
CSA Certified UL Listed IEC Rated
Catalog Notes
LG breaker is HACR rated
Type
Complete breaker
Amperage Rating
300 A
Trip Type
T185
Circuit breaker type
LG
Circuit breaker frame type
Complete breaker
Rating
80% rated
Series
Series G
Terminals
Line and load
Frame
LG
Frequency rating
50 to 60 Hz
Mounting hardware
Metric
Interrupt rating
100 kAIC at 240 Vac 35 kAIC at 600 Vac 65 kAIC at 480 Vac
Number of poles
Four-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, four-pole, 300 A rating with 100 kAIC at 240 VAC and 65 kAIC at 480 VAC. Business Impact: Enables high fault-current protection for demanding machine rooms while maintaining predictable coordination with downstream protective devices. Application: Suitable for power distribution in control panels and motor control centers that require robust short-circuit withstand. Feature: Fixed thermal, adjustable magnetic trip (T185). Business Impact: Reduces nuisance trips while allowing tailored overcurrent protection to match motor inrush and load profiles. Application: Ideal for equipment with varying load conditions and high startup currents in manufacturing lines. Feature: Line and load terminals with metric mounting. Business Impact: Simplifies field wiring and panel integration, lowering installation time and wiring errors. Application: Quick retrofit or new-panel installations in CE and UL compliant assemblies. Feature: 50/60 Hz operation and 80% rating. Business Impact: Aligns with global plant electrical systems and energy-management objectives, improving operating efficiency and reducing energy-related downtime. Application: Suitable for mixed-voltage facilities and international projects requiring consistent performance. Feature: Certifications and compliance (CE Marked, CSA Certified, UL Listed, IEC Rated). Business Impact: Streamlines regulatory approvals, audits, and cross-border deployments while maintaining vendor-spare-part compatibility. Application: Global manufacturing environments and panel-building shops seeking reliable, standards-aligned MCCBs. Feature: Series G, four-pole complete breaker design. Business Impact: Provides a proven protection platform with consistent interchangeability within Eaton’s MCCB ecosystem, reducing spare-part inventory. Application: New-builds and upgrades in industrial automation where standardization drives maintenance efficiency and uptime.
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FAQs
LGH4300FAG uses metric mounting hardware compatible with standard industrial enclosures and control panels. The four-pole LG frame is designed for straightforward line and load wiring, enabling clean, reliable installations. This compatibility reduces retrofit time and minimizes field rework, while preserving interchangeability with other Series G devices for spare-parts efficiency.
LGH4300FAG provides a 300 A rating with interrupt ratings of 100 kAIC at 240 VAC, 65 kAIC at 480 VAC, and 35 kAIC at 600 VAC. For applications with high fault-current potential at lower voltages, select the 240 VAC rating to maximize short-circuit withstand. For higher voltage systems, use the corresponding 480 VAC or 600 VAC ratings while ensuring coordination with downstream devices.
Yes. The unit features fixed thermal with an adjustable magnetic trip (T185), which allows tailored response to motor inrush and running currents. With a four-pole configuration and robust interrupt ratings, it provides reliable motor protection in panel boards and motor control centers, while maintaining coordination with other protective devices to minimize nuisance trips and downtime.
LGH4300FAG is CE Marked and CSA Certified, UL Listed, and IEC Rated. These certifications verify compliance with international electrical safety and performance standards, simplify regulatory approvals, and support cross-border deployments. They also aid in passing audits and ensuring panel-level conformity for diverse industrial environments.
Choosing LGH4300FAG can reduce total cost of ownership through higher uptime from reliable protection, lower nuisance-tripping rates, and easier maintenance due to standardized Series G components. The device’s compact LG frame, plug-and-play mounting, and extensive certifications streamline procurement, installation, and spares management across multiple sites, delivering measurable uptime and efficiency gains.