Eaton LGEDC3400FAG PV Guard - UL 489, 3-pole, 600V
Part Number: LGEDC3400FAG
Quick Summary
The Eaton LGEDC3400FAG PV Guard is a DC/PV molded case circuit breaker designed for solar power protection in commercial and utility-scale installations. Installers often struggle to find breakers that reliably interrupt DC faults, withstand wide voltage swings, and fit into compact PV enclosures. UL 489 listing confirms compliance for molded case breakers used in protection schemes, while the LG-frame design and fixed thermal with adjustable magnetic trip enable precise coordination with inverters and array wiring. This solution also supports metric mounting hardware and line/load terminals, delivering a space-efficient, code-compliant protection asset that reduces wiring complexity and improves maintenance predictability. PV protection, molded case circuit breaker, and DC protection are central to delivering reliable solar system performance.
Product Information
Extended Description
LGEDC3400FAG Eaton: Eaton Series G DC/PvGard complete molded case circuit breaker, LG-frame, LG, Fixed thermal, adj. 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, Line/load, Metric
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
LGEDC3400FAG
UPC
786685479507
Product Length/Depth
4.09 in
Product Height
5.48 in
Product Width
5.48 in
Product Weight
16 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
Line and load
Frame
LG
Class
Vdc
Mounting hardware
Metric
Interrupt rating
35 kAIC at 480 Vac 65 kAIC at 240 Vac 35 kAIC at 415 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 - LGEDC3400FAG
Eaton Specification Sheet - LGEDC3400FAG
FeatureLGEDC3400FAG offers a 400 A amperage rating and a 600 Vac operating voltage, delivering robust protection for mid-to-large PV strings. Business impact includes improved fault resilience and reduced risk of nuisance trips in dynamic solar environments, translating to less downtime and safer electrical cabinets. This three-pole LG-frame breaker is ideal for DC PV circuits in commercial rooftops and utility-scale inverters, with space efficiency and straightforward wiring enhancing installation speed. Application compatibility extends to line/load terminals with metric mounting hardware, enabling seamless integration into existing enclosures and PV combiner boxes. The fixed thermal with adjustable magnetic trip (T185) provides reliable coordination across temperature ranges and DC arcing conditions, reducing miscoordination and enabling predictable protection in changing sunlight conditions. This logic-driven design supports maintenance planning and equipment longevity in harsh outdoor environments.
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FAQs
LGEDC3400FAG is designed for three-pole DC PV circuits with line/load terminals and metric mounting hardware. Ensure enclosure space accommodates a 4.09 in depth and 5.48 in height/width, and verify mounting points align with standard LG-frame MCCB installations. The device supports common PV protection schemes and can be integrated with existing DC combiner boxes and inverters without extensive rework.
Key specs include a 400 A amperage rating, 600 Vac voltage rating, and a trip type of T185. It is a three-pole LG-frame complete breaker with line/load terminals, capable of interrupt ratings up to 65 kAIC at 240 Vac and 35 kAIC at higher voltages, providing robust protection for PV systems and inverter inputs.
Yes. The LGEDC3400FAG is purpose-built for PV protection with a DC-rated trip profile (T185) and a complete LG-frame MCCB design. Its fixed thermal and adjustable magnetic trip are configured to coordinate safely with DC fault currents in PV arrays, reducing arcing risk and improving system reliability.
This device is UL 489 listed, which confirms compliance for molded case circuit breakers used in electrical protection schemes. UL 489 certification is a key requirement for code compliance in many markets and helps ensure predictable performance, safe interrupting capabilities, and compatibility with standard electrical assemblies in PV installations.
Eaton offers a policy aligned with the product warranty: one year from installation or eighteen months from shipment, whichever occurs first. This coverage supports maintenance planning, reduces risk for field failures, and ensures access to Eaton’s technical support and replacement options if issues arise during protective coordination in PV systems.