Eaton LGU4300FAG Complete MCCB - 200 kAIC at 240 Vac

Part Number: LGU4300FAG
Manufacturer
Eaton
Part number
LGU4300FAG

Quick Summary

The Eaton LGU4300FAG molded case circuit breaker protects power circuits in industrial machinery and control panels. Engineers frequently contend with nuisance trips, miscoordination, or cramped enclosures that drive downtime and costly maintenance. It carries IEC Rated, UL Listed, and CSA Certified marks with CE compliance, supporting global procurement and regulatory alignment. Designed for LG-frame, line-and-load installations with fixed thermal and adjustable magnetic trip, it delivers reliable protection at 300 A while enabling scalable systems. This combination of performance and certifications translates into lower total cost of ownership and easier integration into panel builds. In practice, it aligns with Series G accessories and HACR-rated construction for dependable, modular protection.

Product Information

Extended Description

LGU4300FAG Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Fixed thermal, adjustable magnetic trip, Four-pole, 300A, 200 kAIC at 240 Vac, 150 kAIC at 480 Vac, 65 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
LGU4300FAG
UPC
786685185095
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
IEC Rated UL Listed CSA Certified
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
150 kAIC at 480 Vac 65 kAIC at 600 Vac 200 kAIC at 240 Vac
Number of poles
Four-pole
Feature: Four-pole LG-frame design with fixed thermal and adjustable magnetic trip. Business Impact: Provides precise coordination and reliable protection for three-phase systems, reducing nuisance trips and equipment damage. Application: Ideal for industrial panels requiring stable protection in demanding environments. The four-pole configuration supports balanced protection across all phases, improving system uptime. Feature: High interrupt ratings (200 kAIC at 240 Vac, 150 kAIC at 480 Vac, 65 kAIC at 600 Vac). Business Impact: Handles high fault currents without compromising safety or service life, enabling safer totem-pole or distribution applications. Application: Suitable for medium to large motor and power distribution sections in manufacturing lines. Feature: LG frame, line-and-load terminals, metric mounting. Business Impact: Simplifies installation and field retrofit with standardized mounting and wiring practices. Application: Facilitates fast panel integration and future expansion in control cabinets. Feature: Certifications and compliance (IEC Rated, UL Listed, CSA Certified, CE Marked). Business Impact: Supports global sourcing, regulatory compliance, and streamlined procurement for multinational projects. Application: Critical for international installations and cross-border equipment fleets. Feature: HACR rating and warranty. Business Impact: Ensures energy-efficient, compliant operation with a defined warranty window, lowering lifecycle risk. Application: HVAC and building automation panels where energy codes drive HACR-rated breakers. Feature: 50/60 Hz operation, 80% rated, 300 A rating. Business Impact: Aligns with worldwide electrical standards while providing robust protection at standard line frequencies. Application: General-purpose protection in diverse industrial environments, from conveyors to packaging lines.

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FAQs

LGU4300FAG uses the LG frame with a four-pole design and line-and-load terminals, featuring metric mounting hardware for seamless panel integration. It supports fixed thermal and adjustable magnetic trip, enabling precise coordination in control panels and distribution boards. This makes retrofits and new builds easier, reducing wiring complexity and space requirements while maintaining protection standards.
The LGU4300FAG provides interrupt ratings of 200 kAIC at 240 Vac, 150 kAIC at 480 Vac, and 65 kAIC at 600 Vac, with a 50 to 60 Hz frequency rating. This enables safe operation under high fault currents across varying industrial power distributions, supporting reliable protection for motors, drives, and feeders in mixed-voltage facilities.
Yes. Catalog notes indicate the LG breaker is HACR rated, making it suitable for HVAC and related control panels where energy efficiency and code-compliant protection are required. This rating helps ensure harmonious coordination with heating, air conditioning, and refrigeration equipment while meeting applicable electrical codes.
LGU4300FAG carries IEC Rated, UL Listed, and CSA Certified marks, along with CE Marked compliance. These certifications support global procurement, cross-border installation, and regulatory assurance across multiple regions, simplifying supply chain decisions for multinational facilities.
The product carries Eaton's warranty: one year from installation or eighteen months from shipment, whichever occurs first. This warranty, combined with robust field service and availability of parts, supports lower lifecycle risk and reduced total cost of ownership for distributor panels and end-user environments.