Eaton LGEDC3400FAW PV Guard MCCB - UL 489, 400A
Part Number: LGEDC3400FAW
Quick Summary
PV Guard by Eaton is a complete molded case circuit breaker for PV solar DC protection. Engineers face challenges delivering reliable DC protection across fluctuating PV voltages while fitting protection into compact enclosures. UL 489 certification ensures safety compliance for MCCB deployments; the LG frame design supports PVGuard integration with a 400 A, 600 Vac rating and robust trip options. This solution delivers installation efficiency and long-term reliability for utility-scale and rooftop PV projects, while offering a streamlined warranty and service experience. With three-pole configuration, fixed thermal, and adjustable magnetic trip, technicians gain precise protection coordination across DC strings, minimizing downtime and simplifying procurement.
Product Information
Extended Description
LGEDC3400FAW Eaton: Eaton Series G DC/PvGard complete molded case circuit breaker, LG-frame, LG, Fixed thermal, adjustable magnetic trip, Three-pole, 400A, 600 Vac, 65 kAIC at 240 Vac, 35 kAIC at 415 Vac, 35 kAIC at 480 Vac, 18 kAIC at 600 Vac, No term., Vdc
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
LGEDC3400FAW
UPC
786685479569
Product Length/Depth
4.09 in
Product Height
5.48 in
Product Width
5.48 in
Product Weight
13.5 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 489
Amperage Rating
400 A
Voltage rating
600 Vac
Trip Type
T185
Circuit breaker type
LG
Circuit breaker frame type
Complete breaker
Terminals
Without terminals
Frame
LG
Class
Vdc
Interrupt rating
35 kAIC at 415 Vac 35 kAIC at 480 Vac 65 kAIC at 240 Vac 18 kAIC at 600 Vac
Number of poles
Three-pole
PVGard solar circuit breakers product aid
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Value of Circuit Breakers for PV Systems and Eaton PVGard Solar Circuit Breakers
Eaton Specification Sheet - LGEDC3400FAW
Eaton Specification Sheet - LGEDC3400FAW
Feature: 400 A amperage rating with 600 Vac capability. Business Impact: Protects large DC PV strings without oversizing, reducing hardware costs and design complexity while maintaining safety margins. Application: Ideal for rooftop and utility-scale PV installations where high continuous current and solid DC protection are required. Feature: Fixed thermal with adjustable magnetic trip (T185) for precise fault coordination. Business Impact: Reduces nuisance tripping and improves selectivity in PV circuits, lowering maintenance and outage durations. Application: Critical in fluctuating DC environments common to solar arrays. Feature: LG frame, complete molded case breaker with three poles and terminals without terminals. Business Impact: Simplifies installation and integration within standard Eaton bus systems, speeding commissioning and reducing field wiring errors. Application: Suitable for compact control panels and PV protection toppers. Feature: Wide interrupt ratings across voltages—65 kAIC at 240 Vac, 35 kAIC at 415/480 Vac, 18 kAIC at 600 Vac. Business Impact: Delivers robust fault current protection, supporting diverse PV configurations and improving system reliability. Application: Fits utility-scale, commercial, and residential PV installations with variable fault levels. Feature: PVGuard compatibility, UL 489 certification, and warranty coverage. Business Impact: Ensures regulatory compliance and dependable service life, lowering lifecycle risk and total cost of ownership. Application: Long-term protection in solar projects with vendor-backed support and proven Eaton performance. Feature: Physical dimensions and weight 4.09 in L, 5.48 in W/H, 13.5 lb; straightforward mounting and serviceability. Business Impact: Reduces footprint, facilitates rack-mount and enclosure integration, and simplifies replacement processes. Application: Space-constrained panels and retrofit projects in PV protection schemes.
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FAQs
LGEDC3400FAW is designed for DC protection in PV installations using the LG frame molded case breaker. It fits three-pole configurations up to 400 A and 600 Vac, with PVGuard integration for solar systems. The unit is compatible with rooftop and utility-scale PV arrays, offering fixed thermal and adjustable magnetic trip to handle both durable and transient faults.
Key specs include a 400 A amperage rating, 600 Vac voltage rating, and a three-pole design. The trip type is T185 with fixed thermal and adjustable magnetic trip. It provides interrupt ratings of up to 65 kAIC at 240 Vac, 35 kAIC at 415/480 Vac, and 18 kAIC at 600 Vac, supporting robust protection in PV DC circuits.
The LG frame three-pole design with no terminals simplifies field wiring and reduces install time. Its weight of 13.5 lb and compact footprint (4.09 in L x 5.48 in W/H) fit standard enclosures, aiding retrofit projects. PVGuard compatibility further streamlines integration with Eaton protection ecosystems, while UL 489 certification confirms compliance for industrial solar protection.
Yes, LGEDC3400FAW carries UL 489 certification, validating electrical safety for molded case breakers. It is covered under Eaton’s warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. This provides a clear, manufacturer-backed support window to ensure reliable performance in PV protection duty.
The unit’s high interrupt ratings, 400 A DC protection, and UL 489 compliance help prevent costly outages in PV systems. PVGuard compatibility simplifies system integration, reducing engineering time and spare-part complexity. Combined with Eaton’s warranty, the LGEDC3400FAW supports lower total cost of ownership through reliable protection, predictable maintenance, and faster fault diagnosis.