Eaton LHH3350FFG Complete MCCB - UL Listed HACR

Part Number: LHH3350FFG
Manufacturer
Eaton
Part number
LHH3350FFG

Quick Summary

Eaton LHH3350FFG Complete MCCB provides high-capacity protection for electrical distribution panels in industrial environments. Engineers often face nuisance trips and difficult coordination across feeders, risking downtime. UL Listed and CSA Certified ratings, along with HACR-rated operation, help ensure compliance and motor protection. With a 350 A at 600 Vac rating and robust interrupt capabilities, it supports scalable, reliable installations that reduce total cost of ownership. Designed for Line and Load connections with a metric mounting option, it simplifies panel upgrades and spare-part planning. Maintainability is improved by standard LG frame and fixed trip features that minimize mis-timing trips during high inrush. Manufacturers benefit from proven performance across 240–600 Vac networks and a 1-year warranty supported by Eaton's service policy.

Product Information

Extended Description

LHH3350FFG Eaton: Eaton Series G molded case circuit breaker, LG-frame, LH, Fixed thermal, fixed magnetic trip, Three-pole, 350A, 600 Vac, 100 kAIC at 240 Vac, 70 kAIC at 415 Vac, 65 kAIC at 480 Vac, 35 kAIC at 600 Vac, Line and load, Metric
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
LHH3350FFG
UPC
786685227108
Product Length/Depth
15.75 in
Product Height
7.13 in
Product Width
7.75 in
Product Weight
16.25 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 CSA Certified
Catalog Notes
LG breaker is HACR rated
Type
Complete breaker
Amperage Rating
350 A
Voltage rating
600 Vac
Trip Type
T186
Circuit breaker type
LH
Circuit breaker frame type
Complete breaker
Terminals
Line and load
Frame
LG
Mounting hardware
Metric
Interrupt rating
65 kAIC at 480 Vac 35 kAIC at 600 Vac 100 kAIC at 240 Vac 70 kAIC at 415 Vac
Number of poles
Three-pole
350 A at 600 Vac capacity within the LG frame supports large motor loads with dependable protection, reducing nuisance trips and equipment damage. The LG frame LH complete breaker is designed for line and load connections in space-constrained panels, simplifying layout, assembly, and service. In practice, it enables straightforward integration into motor control centers (MCCs), switchgear, and distribution panels. The compact 15.75 in depth and metric mounting hardware streamline retrofits and new builds alike. Fixed thermal and fixed magnetic trip (T186) deliver fast, predictable responses to short circuits, supporting better protection coordination with upstream devices. This approach reduces arc flash exposure and improves overall safety margins in control cabinets. It is particularly effective for high-inrush loads found in pumps, fans, and conveyors. UL Listed and CSA Certified ratings, together with HACR-rated catalog notes, ensure compliance with global electrical codes and support efficient energy management in the panel. The three-pole LH design provides consistent protection across all phases, while metric mounting simplifies installation alongside existing equipment. Interrupt ratings span 100 kAIC at 240 Vac, 70 kAIC at 415 Vac, 65 kAIC at 480 Vac, and 35 kAIC at 600 Vac, enabling protection across varied plant voltages. That versatility supports both new builds and retrofit projects in mixed-voltage facilities. Line and Load terminals further simplify wiring, and the complete breaker reduces the need for separate components. Eaton's warranty policy provides one year from installation or 18 months from shipment, helping procurement manage risk and service continuity.

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FAQs

The LHH3350FFG uses the LG frame LH three-pole configuration with metric mounting, designed for line and load terminations in motor control centers, switchgear, and distribution panels. Its compact 15.75 in depth enables retrofit into space-limited enclosures while maintaining reliable protection for large motor loads.
It is rated at 350 A and 600 Vac, with interrupt ratings of 100 kAIC at 240 Vac, 70 kAIC at 415 Vac, 65 kAIC at 480 Vac, and 35 kAIC at 600 Vac. The trip type is T186, and the device is a three-pole LH molded case circuit breaker.
Yes. The unit is UL Listed and CSA Certified, with HACR-rated catalog notes to support compliance with motor and control-panel protection requirements in many global markets.
Ideal for motor control centers, control panels, and distribution boards in manufacturing and process facilities that require reliable short-circuit protection, scalable fault current handling, and straightforward installation with line/load terminals and metric mounting.
A one-year warranty (or 18 months from shipment) helps manage procurement risk, while its robust interrupt ratings and standardized LG frame design support longer service life, easier spares planning, and predictable maintenance intervals, delivering lower total cost of ownership.