Eaton LGPV4400W PV Guard MCCB - 1000 Vdc UL Listed
Part Number: LGPV4400W
Quick Summary
Eaton LGPV4400W PV Guard MCCB is a complete molded case circuit breaker designed for PV protection in solar installations. Engineers face tight spaces, 1000 Vdc system requirements, and safety-compliance pressures that demand reliable protection. UL Listed and CSA Certified PV-class devices support NEC PV codes and utility acceptance, while the four-pole LG frame delivers balanced performance. This solution provides dependable protection with 400 A capacity and 7.5 kAIC interrupt rating, helping you meet code requirements. By aligning with PV-specific standards, you reduce project risk and shorten commissioning time while maximizing system uptime.
Product Information
Extended Description
LGPV4400W Eaton: Eaton PV Guard / Solar complete molded case circuit breaker, LG-frame, LG, Complete breaker, Fixed thermal, fixed magnetic trip type, Four-pole, 400A, 1000 Vdc, 7.5 kAIC, Without terminals, Photo voltaic, 80% rated
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
LGPV4400W
UPC
786685883182
Product Length/Depth
15 in
Product Height
8 in
Product Width
9 in
Product Weight
18 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
Amperage Rating
400 A
Voltage rating
1000 Vdc
Trip Type
T186
Circuit breaker type
LG
Circuit breaker frame type
Complete breaker
Rating
80% rated
Terminals
Without terminals
Frame
LG
Class
Photovoltaic
Interrupt rating
7.5 kAIC
Number of poles
Four-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 - LGPV4400W
Eaton Specification Sheet - LGPV4400W
LG frame, complete breaker design delivers compact protection for 400 A loads at 1000 Vdc; Business impact: simplifies panel design and reduces field wiring errors; Application: PV string protection, inverter protection, and PV combiner boxes. Fixed thermal and fixed magnetic trip (T186) ensures precise coordination and fast fault clearance; Business impact: minimizes arc-flash risk and protects critical equipment; Application: grid-tied PV configurations and modular PV stations. Without terminals, the device offers flexible terminal options and eased field wiring; Business impact: reduces inventory constraints and accelerates commissioning; Application: field installation in space-constrained solar racks. 80% rated operation in PV environments paired with a four-pole LG frame provides robust protection while maximizing efficiency; Business impact: lowers thermal stress and improves long-term reliability; Application: utility-scale and commercial rooftop PV systems. UL Listed and CSA Certified with Photovoltaic class credentials confirm regulatory compliance; Business impact: streamlines approvals and utility acceptance; Application: new builds and retrofit PV projects. The 7.5 kAIC interrupt rating supports rapid fault interruption; Business impact: reduces fault energy and equipment damage risk; Application: large PV inverters and combiner boxes in high-current arrays.
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FAQs
The LGPV4400W uses the LG frame and is designed as a complete four-pole MCCB, enabling straightforward integration into LG-frame panel assemblies and standard electrical rooms. With no terminals included, installers can select compatible lugs or terminal kits to meet wiring methods and insulation requirements, reducing field modifications and delivering clean, compliant terminations in solar projects.
The LGPV4400W is UL Listed and CSA Certified, with a photovoltaic class designation to address DC PV protections. These certifications support NEC 690 compliance, utility interconnection requirements, and broader safety approvals for solar installations, simplifying procurement, inspection, and commissioning processes.
The device features a fixed thermal, fixed magnetic trip known as T186, designed for reliable coordination and fast fault clearance. It provides an interrupt rating of 7.5 kAIC, enabling effective interruption of short-circuit currents in 400 A, 1000 Vdc PV circuits and enhancing overall system safety.
Yes. The LGPV4400W is specified for 1000 Vdc operation, with an 80% rating suitable for PV applications. Its four-pole LG frame and PV-class construction are tailored for solar arrays, inverters, and PV combiner boxes, offering robust overcurrent protection in utility-scale and commercial PV deployments.
Because terminals are not included, you should plan for compatible lugs or terminal adapters and ensure wiring methods meet local code and insulation requirements. Verify torque, conductor sizing, and enclosure fit for the 15 in x 9 in x 8 in footprint and the 18 lb weight to optimize handling, spacing, and thermal management in rooftop or rack-mounted PV installations.