Eaton LGU4400AAG Complete MCCB - UL Listed
Part Number: LGU4400AAG
Quick Summary
The Eaton LGU4400AAG complete molded case circuit breaker protects industrial control panels and motor feeders. Engineers often face nuisance trips and coordination challenges when protection settings don’t align with load profiles. This LGU4400AAG provides UL Listed protection with HACR rating and adjustable thermal and magnetic trip units, designed for IEC markets with metric mounting. By combining precise protection with flexible installation, it supports uptime, predictable maintenance, and strong compliance across industrial environments while enabling efficient panel design and reduced life-cycle costs.
Product Information
Extended Description
LGU4400AAG Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Adjustable thermal, adjustable magnetic trip, Four-pole, 400A, 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
LGU4400AAG
UPC
786685184999
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.
Certifications
UL Listed
Catalog Notes
Adjustable thermal, adjustable magnetic trip units are typically used in IEC markets and are not UL or CSA listed, LG breaker is HACR rated
Type
Complete breaker
Amperage Rating
400 A
Trip Type
Adjustable thermal, adjustable magnetic
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
65 kAIC at 600 Vac 200 kAIC at 240 Vac 150 kAIC at 480 Vac
Number of poles
Four-pole
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
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
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: LG frame, four-pole design with line and load terminals; Business Impact: simplifies panel layout and improves protection coordination for large motor loads; Application: control panels in manufacturing and process environments. Feature: Adjustable thermal and adjustable magnetic trip; Business Impact: enables precise coordination with upstream protection, reducing nuisance trips and wear on equipment; Application: machine trains and conveyor systems. Feature: Interruption ratings of 200 kAIC at 240 VAC, 150 kAIC at 480 VAC, and 65 kAIC at 600 VAC; Business Impact: higher fault tolerance and shorter fault energy; Application: critical power feeds and compressor banks. Feature: UL Listed with HACR rating; Business Impact: regulatory compliance and safe control of devices with motors; Application: NEC/IEC installations with compliant protection. Feature: Metric mounting hardware and line/load terminals; Business Impact: easier field installation and compatibility with existing panels; Application: retrofit and new panel builds in industrial facilities. Feature: 400 A rating and Series G LG frame; Business Impact: robust protection for heavy-duty circuits while retaining modularity and serviceability; Application: large control panels and industrial equipment feeders. Warranty: One year from installation or eighteen months from shipment; Business Impact: clear, predictable service terms to minimize risk and support maintenance planning; Application: ongoing plant operations and equipment safeguarding.
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FAQs
LGU4400AAG uses the LG frame with four poles and line/load terminals, and it employs metric mounting hardware for easy panel integration. It fits standard control panels and motor feeder circuits in IEC markets, simplifying wiring schemes and improving protection coordination when combined with compatible upstream devices.
The unit features adjustable thermal and adjustable magnetic trip settings, enabling precise coordination with other protective devices. To configure correctly, consult the MOEM MCCB product selection guides and Eaton installation notes, apply the correct torque to terminals, and verify coordination with upstream protection to prevent nuisance trips while ensuring fast fault clearance.
The LGU4400AAG is designed for IEC markets with IEC-oriented trip configurations and metric mounting, and it carries UL Listed certification with HACR rating. Note that some configurations with IEC-oriented trip units may not carry UL/CSA listings; always verify the specific configuration in the product notes before deployment.
The unit provides 200 kAIC interrupt rating at 240 VAC, 150 kAIC at 480 VAC, and 65 kAIC at 600 VAC, enabling strong short-circuit protection across typical industrial power levels while maintaining acceptable fault energy in the protected circuits.
Warranty is governed by Eaton Selling Policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. This provides a clear coverage window for performance issues and supports proactive maintenance planning for plant protection systems.