Eaton LGU4320AAW Molded Case Breaker - UL Listed
Part Number: LGU4320AAW
Quick Summary
Eaton LGU4320AAW Molded Case Breaker provides precise overcurrent protection for control panels. Engineers often battle nuisance trips and poor protection coordination; this unit’s adjustable thermal and magnetic trip lets you tailor protection to load profiles. UL Listed and HACR rated, it supports 50/60 Hz operation across 240, 480, and 600 Vac, with four poles and high interrupt ratings for reliable service. Designed for Series G protection schemes, it helps optimize panel density, maintenance planning, and total cost of ownership in industrial environments. It ships without terminals, enabling field-lug compatibility with existing hardware, while a one-year warranty supports ongoing service.
Product Information
Extended Description
LGU4320AAW Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Adjustable thermal, adjustable magnetic trip, Four-pole, 320A, 200 kAIC at 240 Vac, 150 kAIC at 480 Vac, 65 kAIC at 600 Vac, Without terminals, 50/60 Hz, 80% rated
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
LGU4320AAW
UPC
786685241197
Product Length/Depth
4.09 in
Product Height
7.22 in
Product Width
7.22 in
Product Weight
17.6 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
320 A
Trip Type
Adjustable thermal, adjustable magnetic
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
200 kAIC at 240 Vac 150 kAIC at 480 Vac 65 kAIC at 600 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
Adjustable thermal and magnetic trip units enable precise protection coordination. This helps prevent nuisance trips during startup and supports selective protection of critical loads in production lines. The four-pole LG frame design simplifies wiring and enhances mechanical stability, reducing panel depth needs and easing installation in compact enclosures. With a 320 A rating and interrupt ratings of 200 kAIC at 240 Vac, 150 kAIC at 480 Vac, and 65 kAIC at 600 Vac, the device provides robust fault clearance across voltages and system configurations, improving uptime and safety in high-demand applications. UL Listed and HACR rated, the breaker meets regulatory expectations for industrial panels across North America, while 50/60 Hz compatibility ensures reliable operation in mixed mains environments. Terminals are not included, so select compatible lug kits to match existing hardware and field wiring strategies. Warranty coverage aligns with Eaton’s policy for long-term service and support.
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FAQs
LGU4320AAW is specified as without terminals, so you must select compatible lug kits or terminal hardware to match your enclosure and conductor sizes. Plan for field wiring during installation, secure with manufacturer-recommended torque, and confirm the lugs are compatible with the LG frame and 4-pole configuration to ensure reliable connections and protection coordination.
LGU4320AAW provides 200 kAIC at 240 Vac, 150 kAIC at 480 Vac, and 65 kAIC at 600 Vac. It is rated for 50/60 Hz operation, supports a 320 A amperage rating, and is designed for four-pole protection in industrial panels, enabling robust fault clearing across common utility and machine power levels.
The LGU4320AAW is UL Listed and HACR rated, suitable for North American panels requiring UL compliance. Catalog notes indicate adjustable trip units are often used in IEC markets and may not carry UL/CSA listing in those configurations, so verify the specific trip option and listing for your region and application before deployment.
Ideal for control panels, motor control centers, and machine protection feeders, the LGU4320AAW supports precise overload and short-circuit protection in production lines, ensuring selective coordination and quick fault isolation. Its Series G, LG-frame configuration is well-suited for compact panel designs and higher current protection in industrial environments.
Eaton provides a warranty per policy 25-000, typically one year from installation or eighteen months from shipment, whichever occurs first. For technical support, consult Eaton’s datasheets, application notes, and service centers listed in the product materials to maximize lifecycle performance and maintenance planning.