Eaton LGX4300FAG Complete Molded Case Breaker - 200 kAIC

Part Number: LGX4300FAG
LGX4300FAG
Manufacturer
Eaton
Part number
LGX4300FAG
Category

Quick Summary

Eaton LGX4300FAG complete molded case breaker protects industrial power systems in control panels. This solution targets reliability amid demanding peak loads and limited panel space. The device carries UL Listed, CSA Certified and CE Marked approvals, with HACR rating to support motor protection and energy efficiency. Designed for 300 A, four-pole LG-frame applications, it delivers robust short-circuit protection while maintaining a compact footprint. By standardizing on Series G MCCBs, electrical teams reduce spare-part variety and streamline procurement, installation, and future expansion across manufacturing or process facilities.

Product Information

Extended Description

LGX4300FAG Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Complete breaker, Fixed thermal, adjustable magnetic trip type, Four-pole, 300A, 200 kAIC at 240/480 Vac, 65 kAIC at 600 Vac, Line and load, 50/60 Hz, 80% rated
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
LGX4300FAG
UPC
786685183695
Product Length/Depth
4.09 in
Product Height
7.22 in
Product Width
7.22 in
Product Weight
15.7 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 IEC Rated UL Listed
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
Interrupt rating
65 kAIC at 600 Vac 200 kAIC at 240/480 Vac
Number of poles
Four-pole
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Feature: 300 A amperage rating within an LG frame four-pole assembly. Impact: Enables safe, scalable protection for multi-line feeders and motor loads, reducing risk of equipment damage and downtime. Application: Industrial control panels and motor control centers requiring precise 300 A protection with minimal space. The combination supports long-term uptime and predictable maintenance cycles. Feature: High interrupt ratings of 200 kAIC at 240/480 Vac and 65 kAIC at 600 Vac. Impact: Withstand fault currents common in factory floors and distribution centers, protecting downstream devices and reducing collateral damage. Application: Panelboards in high-short-circuit environments where reliability is critical. Feature: Fixed thermal, adjustable magnetic (T185) trip type. Impact: Enables selective coordination and nuisance-trip reduction for improved process continuity. Application: Systems with downstream protective devices requiring coordinated tripping in manufacturing lines. Feature: Line and load terminals, 4.09 in depth and 7.22 in width/height, 15.7 lb. Impact: Easier installation and retrofit in space-constrained panels with straightforward wiring. Application: New builds and upgrades in modern electrical rooms and machine applications. Feature: Certifications and compliance (CE Marked, UL Listed, CSA Certified, IEC Rated, HACR rated). Impact: Simplifies global compliance, reduces sourcing risk, and supports motor-protection needs. Application: International projects and panel builders seeking certified, multilingual documentation and quick approvals. Feature: Warranty and support (25-000 policy; 1 year from installation or 18 months from shipment). Impact: Lower total cost of ownership through predictable service windows and dependable replacement timelines. Application: OEMs and integrators planning long-term maintenance strategies.

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FAQs

LGX4300FAG uses a four-pole LG frame with line and load terminals, designed for panel installations where space is at a premium. Its 4.09 in depth and 7.22 in height/width provide a compact footprint, while weighing 15.7 lb for manageable handling. Ensure proper torque on terminations and maintain clearances per enclosure guidelines. The unit also supports standard mounting patterns found in Series G MCCBs, simplifying retrofits and new builds alike.
The device is rated for 300 A with a fixed thermal, adjustable magnetic trip (T185). It offers an interrupt rating of 200 kAIC at 240/480 Vac and 65 kAIC at 600 Vac, operating at 50 to 60 Hz and 80% rated. Terminals are line and load, and it is a four-pole LG frame device. These specs support reliable protection for multi-phase loads and motors in demanding industrial environments.
Yes. The LGX4300FAG delivers a high interrupt rating of 200 kAIC at 240/480 Vac (and 65 kAIC at 600 Vac), enabling it to withstand substantial fault currents without cascading damage. Its four-pole configuration supports true 3-phase protection with proper coordination. When paired with correct upstream devices, it minimizes damage and downtime in manufacturing cells and power distribution networks.
LGX4300FAG carries UL Listed, CSA Certified, and CE Marked certifications, and is IEC rated with HACR approval. These credentials help satisfy global electrical codes and motor-protection requirements, streamline procurement for multinational projects, and provide confidence in performance across diverse panel-building standards.
The breaker standardizes on Eaton's Series G, delivering reliable overcurrent protection with a compact footprint. High interrupt ratings reduce fault-related damage, while HACR rating supports motor protection. Documentation and certifications ease regulatory approvals, and the warranty reduces total-cost-of-ownership. This translates to lower downtime, faster commissioning, and predictable maintenance planning for OEMs and end users.