Eaton KDPV4250W PV Guard MCCB - UL Listed, CSA Certified
Part Number: KDPV4250W
Quick Summary
PV Guard KDPV4250W is a complete molded case circuit breaker designed for solar PV protection. Engineers often grapple with reliable DC protection in outdoor PV installations, where downtime can impact uptime and safety. UL Listed and CSA Certified, with Photovoltaic class labeling and a 50°C calibration, reinforce safety and field reliability in harsh environments. Rated 250 A at 1000 Vdc with 5 kAIC in a four-pole KD frame, it streamlines panel layouts and reduces field wiring complexity. Its 80% rated performance and terminal-free design support faster installation and lower lifecycle costs in solar projects.
Product Information
Extended Description
KDPV4250W Eaton: Eaton PV Guard / Solar complete molded case circuit breaker, K-frame, KD, Complete breaker, Fixed thermal, fixed magnetic trip type, Four-pole, 250A, 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
KDPV4250W
UPC
786685883359
Product Length/Depth
12 in
Product Height
8 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
Amperage Rating
250 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
PVGard solar circuit breakers technical data sheet
PVGard solar circuit breakers technical data sheet
Feature 1: Amperage rating of 250 A provides robust protection for high-current DC feeders. Business impact: reduces risk of nuisance trips while enabling reliable protection for large PV arrays; Application: PV power centers and DC distribution buses. Feature 2: Voltage rating of 1000 Vdc supports modern solar installations common in utility-grade PV systems; Business impact: enables wider system compatibility and safer DC running voltages; Application: PV combiner boxes and inverter feeder circuits. Feature 3: Trip type T186 offers fixed thermal and fixed magnetic protection for predictable, fast tripping during faults; Business impact: improves safety margins and fault clearance times; Application: DC protection in PV strings and arrays. Feature 4: Frame KD and complete breaker design simplify installation and coordination with enclosure layouts; Business impact: reduces assembly time and part count; Application: retrofit and new-build PV protection panels. Feature 5: Terminals without terminals streamline wiring practice and minimize field-term installation errors; Business impact: reduces install time and potential terminal misconnections; Application: plug-and-play protection in PV switchgear. Feature 6: Calibration at 50°C and 80% rated performance reflect real-world PV operating conditions; Business impact: ensures consistent performance across climate zones; Application: outdoor solar farms and rooftop systems. Feature 7: Certifications UL Listed and CSA Certified provide regulatory assurance and compatibility with industry standards; Business impact: accelerates procurement and compliance audits; Application: utility-grade PV projects and commercial solar installations.
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FAQs
Install the KDPV4250W into a compatible KD frame enclosure designed for complete breakers. Use the four-pole configuration to maintain proper phase separation, ensuring the device is mounted securely and wired without terminals to reduce field wiring errors. Verify DC continuity to the PV array and confirm the 1000 Vdc rating is respected within the enclosure limits.
Key specs include 250 A amperage rating, 1000 Vdc voltage rating, 5 kAIC interrupt rating, four-pole design, T186 trip type, KD frame, and 80% rated performance. It is a photovoltaic class breaker calibrated for 50°C and is without terminals, optimizing installation efficiency in PV applications.
Yes. The KDPV4250W is UL Listed and CSA Certified, specifically designed for photovoltaic use. These certifications support safety conformity, regulatory approvals, and smoother integration into code-compliant solar projects.
This breaker is ideal for PV system DC protection, including PV arrays, inverter feeder circuits, and DC distribution in solar power centers. Its PVGuard design and 1000 Vdc capability make it suitable for rooftop and utility-scale solar installations where reliable protection and fast fault clearance are critical.
By delivering reliable DC protection, reducing nuisance trips, and enabling faster installation with a terminal-free design, the KDPV4250W lowers labor costs and maintenance downtime. Coupled with UL/CSA certifications, it helps ensure regulatory compliance and reduces the risk of costly outages in solar PV deployments.