Eaton KDPV4300W PV Guard Solar MCCB - UL/CSA Rated
Part Number: KDPV4300W
Quick Summary
The Eaton PV Guard KDPV4300W is a solar-ready complete MCCB for PV DC protection in utility-scale and commercial solar systems. Engineers often face space constraints, long installation windows, and PV-specific standards that challenge reliable circuit protection. UL Listed and CSA Certified, with a 1000 Vdc rating, 5 kAIC interrupt capacity, and photovoltaic class, ensure regulatory compliance. The KD frame and four-pole design simplify wiring and testing, while 50°C calibration and 80% rated performance align with PV site conditions. These qualities translate into faster deployments, safer DC protection, and lower lifecycle costs for solar projects.
Product Information
Extended Description
KDPV4300W Eaton: Eaton PV Guard / Solar complete molded case circuit breaker, K-frame, KD, Complete breaker, Fixed thermal, fixed magnetic trip type, Four-pole, 300A, 1000 Vdc, 5 kAIC, Without terminals, Photo voltaic, 50°C, 80% rated
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
KDPV4300W
UPC
786685883366
Product Length/Depth
12 in
Product Height
6.5 in
Product Width
8 in
Product Weight
14.5 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 Listed CSA Certified
Type
Complete breaker
Amperage Rating
300 A
Voltage rating
1000 Vdc
Trip Type
T186
Circuit breaker type
KD
Circuit breaker frame type
Complete breaker
Rating
80% rated
Terminals
Without terminals
Frame
K
Class
Photovoltaic
Calibration
50°C
Interrupt rating
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 - KDPV4300W
Eaton Specification Sheet - KDPV4300W
Feature → Business Impact → Application: The complete KD frame, four-pole design reduces field assembly and wiring mistakes, shortening commissioning time and minimizing risk in PV protection cabinets. This translates to quicker project start-ups and fewer re-works in rooftop and utility-scale installations. Feature → Business Impact → Application: 1000 Vdc rating and 5 kAIC interrupt capacity safely handle PV fault currents, improving overall system safety and regulatory compliance. Use in DC PV strings and arrays where robust interruption is required. Feature → Business Impact → Application: 50°C calibration and 80% rated performance ensure reliable operation in hot PV environments, reducing nuisance trips and service calls on rooftop installations and solar farms. Feature → Business Impact → Application: UL Listed and CSA Certified certification streamlines procurement and compliance workflows for industrial solar projects, easing vendor qualification. Feature → Business Impact → Application: Without terminals design supports customer-supplied lugs and bus bars, enabling flexible installation and field termination options for customized PV setups.
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FAQs
KDPV4300W is a complete four-pole KD-frame breaker designed for DC PV protection. It ships without terminals, so you can pair it with your preferred lugs or bus bar terminations. Verify the 1000 Vdc rating and 5 kAIC interrupt capacity to ensure compatibility with your PV array configuration and enclosure footprint.
Key specs include 300 A amperage rating, 1000 Vdc maximum voltage, 5 kAIC interrupt rating, four poles, frame K, and a photovoltaic class designation. These ratings support DC PV protection in rooftop and utility-scale installations while meeting PV-specific standards.
Yes. The KDPV4300W is UL Listed and CSA Certified, which provides regulatory confidence for project documentation, procurement, and commissioning in North American markets. This certification supports code compliance for PV protection in commercial and industrial solar projects.
The product warranty follows Eaton policy 25-000, offering one year from installation or eighteen months from shipment, whichever comes first. This warranty covers manufacturing defects and supports lifecycle planning for solar protection equipment in the field.
The unit measures 12 in in depth, 8 in wide, and 6.5 in in height, with an approximate weight of 14.5 lb. It is a four-pole complete breaker designated as KD frame, designed for DC PV protection, and ships without terminals to allow site-specific termination choices.