Eaton KDPV4225W PV Guard Solar MCCB - UL Listed
Part Number: KDPV4225W
Quick Summary
Eaton KDPV4225W PV Guard Solar MCCB provides reliable overcurrent protection for photovoltaic power systems. Engineers often struggle to balance rapid PV commissioning with long-term safety and code compliance in outdoor installations. UL Listed and CSA Certified devices like this PV Guard breaker help meet NEC/IEC requirements while tolerating 50°C ambient conditions. This combination reduces downtime, simplifies system commissioning, and supports scalable PV protection with complete breaker features that adapt to evolving solar installations. With four-pole construction, fixed thermal and fixed magnetic trip, and a 225 A rating, it offers robust protection while maintaining a compact footprint suitable for advanced solar projects.
Product Information
Extended Description
KDPV4225W Eaton: Eaton PV Guard / Solar complete molded case circuit breaker, K-frame, KD, Complete breaker, Fixed thermal, fixed magnetic trip type, Four-pole, 225A, 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
KDPV4225W
UPC
786685883342
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
225 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: Four-pole KD frame, complete breaker rated at 225 A and 1000 Vdc. Business Impact: Consolidates DC protection into a single, reliable device, reducing wiring complexity and panel footprint. Application: Ideal for PV strings, DC protection in inverter sections, and combiner boxes. Feature: Fixed thermal and fixed magnetic trip (T186). Business Impact: Delivers predictable, fast fault clearance, minimizing arc-flash exposure and system downtime. Application: Essential for mission-critical PV DC circuits in commercial and utility-scale installations. Feature: Terminals Without terminals. Business Impact: Enables flexible wiring options and streamlined enclosure fit, lowering installation time. Application: Field-lug or busbar connections in controlled PVGuard environments. Feature: PV-specific class with calibration at 50°C and 80% rated. Business Impact: Maintains performance in hot outdoor sites, ensuring reliable protection without oversizing. Application: Rooftop and ground-mounted PV arrays under typical European and North American climates. Feature: Certifications UL Listed and CSA Certified. Business Impact: Supports compliance with NEC/IEC standards, reducing QA checks and accelerating procurement. Application: Any regulated PV protection scenario. Feature: Physical specs and warranty. Business Impact: Manageable weight and compact dimensions (12 in × 8 in × 8 in; 14.5 lb) plus a clear warranty policy, aiding logistics and total cost of ownership. Application: System design, shipping, and long-term maintenance planning for mid-size to large solar projects.
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FAQs
KDPV4225W is specified as 'Without terminals,' meaning you must configure field connections using compatible lugs or busbar solutions per Eaton PVGuard guidelines. Check the PVGuard product aids for approved lug kits and installation practices to ensure safe, code-compliant DC terminations in outdoor PV enclosures.
The breaker provides 225 A amperage, 1000 Vdc voltage rating, four-pole configuration, and a 5 kAIC interrupt rating with a T186 trip type. These ratings enable robust protection for 1000 Vdc PV circuits, support fast fault isolation, and accommodate high-current PV strings while maintaining safe DC switching performance.
Yes, KDPV4225W is designed for 1000 Vdc PV systems. It features 50°C calibration and is 80% rated, which aligns with typical outdoor solar environments. For extreme climates, verify enclosure ventilation and conduction paths to ensure favorable operating conditions and maintain protective performance.
The unit is UL Listed and CSA Certified, signaling compliance with recognized safety standards for electrical protection devices. These certifications assist with NEC/IEC compliance in PV installations, simplify procurement audits, and reassure end-users about validated performance and reliability in photovoltaic applications.
Eaton offers a warranty policy of one year from installation or eighteen months from shipment, whichever occurs first. This warranty, combined with the device’s durable PV-specific design and standardized spare parts, supports lower lifecycle risk, predictable maintenance planning, and improved total cost of ownership for solar projects.