Eaton LGU3320AAG Breaker - UL Listed HACR

Part Number: LGU3320AAG
Manufacturer
Eaton
Part number
LGU3320AAG

Quick Summary

The Eaton LGU3320AAG molded case breaker provides reliable three‑phase overcurrent protection for switchgear and control panels. It addresses nuisance trips and miscoordination with adjustable thermal and magnetic trip units, ideal for mixed IEC loads.UL Listed and HACR rated, it supports 50/60 Hz operation and a 320 A rating for demanding industrial environments. This LG frame device offers easy panel integration through line and load terminals, metric mounting hardware, and a compact footprint, delivering predictable protection while minimizing downtime and maintenance costs. For engineers and procurement teams, it combines robust protection with straightforward installation and long-term reliability.

Product Information

Extended Description

LGU3320AAG Eaton: Eaton Series G molded case circuit breaker, LG-frame, LG, Adjustable thermal, adjustable magnetic trip, Three-pole, 320A, 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
LGU3320AAG
UPC
786685184937
Product Length/Depth
4.09 in
Product Height
5.48 in
Product Width
5.48 in
Product Weight
11.9 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
Line and load
Frame
LG
Frequency rating
50 to 60 Hz
Mounting hardware
Metric
Interrupt rating
150 kAIC at 480 Vac 200 kAIC at 240 Vac 65 kAIC at 600 Vac
Number of poles
Three-pole
Feature → Business Impact → Application: Adjustable thermal and magnetic trip units enable precise protection coordination, reducing nuisance tripping and equipment wear, which translates to lower maintenance costs and higher line uptime in IEC markets. Application: suitable for control panels and machine panels requiring selective coordination and motor protection in 50/60 Hz systems. Feature → Business Impact → Application: 320 A current rating with a three‑pole LG frame supports large three‑phase loads, delivering reliable protection for motor feeders and distribution circuits, improving safety and reducing unplanned downtime. Application: ideal for switchgear and power distribution in manufacturing and processing facilities. Feature → Business Impact → Application: 200 kAIC at 240 Vac, 150 kAIC at 480 Vac, and 65 kAIC at 600 Vac provide high interrupt reliability, enabling safe shutdowns during faults. Application: critical power circuits and panel boards with elevated short‑circuit requirements. Feature → Business Impact → Application: UL Listed and HACR rated for compliant motor protection and regulated environments, streamlining procurement and commissioning. Application: standard for US markets and mixed IEC/UL environments. Feature → Business Impact → Application: metric mounting hardware and line/load terminals simplify installation and panel compatibility, reducing assembly time and errors. Application: retrofit or new builds in standard enclosures with Series G MCCBs. Feature → Business Impact → Application: compact dimensions (4.09 in depth, 5.48 in width/height) and 11.9 lb weight improve enclosure fitment and serviceability, lowering installation costs. Application: small to mid‑sized control panels and switchgear assemblies.

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FAQs

LGU3320AAG uses metric mounting hardware with line and load terminals designed for standard three‑pole integration in switchgear and control panels. Its compact 4.09 in depth and 5.48 in width/height footprint makes it compatible with common enclosure arrays, while the LG frame supports straightforward retrofits and consistent panel layouts.
The unit features adjustable thermal and adjustable magnetic trip mechanisms, enabling precise protection coordination across three phases. This reduces nuisance tripping on startup and transient faults, improves selective coordination in feeders, and supports safe, predictable shutdowns for motor loads and process lines.
Yes, the LGU3320AAG is UL Listed and HACR rated, which means it is approved for motor protection in electrical distribution and control circuits. HACR ensures proper coordination with motors and starting equipment, helping to meet industry standards and improve reliability in commercial and industrial settings.
It is suitable for three‑phase motor feeders, switchgear, and control panels in manufacturing and processing facilities. With a 320 A rating and 200 kAIC at 240 Vac, it supports large loads while providing robust protection in 50/60 Hz systems, making it a solid choice for IEC/UL compatible environments.
Warranty terms follow Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This coverage addresses manufacturing defects and ensures access to standard support, replacements, or service guidance to minimize downtime.