Eaton KDPV4125WF01 PV Guard Solar MCCB - UL Listed
Part Number: KDPV4125WF01
Quick Summary
PV Guard Solar complete molded case circuit breaker is Eaton's robust protection solution for photovoltaic DC circuits and solar installations. Engineers face reliability and uptime challenges in harsh PV environments, where temperature swings and fault events can disrupt production. This device addresses those realities with freeze-tested performance and calibration to 50°C, supporting dependable operation in demanding climates. The unit carries UL Listed certification and is designed for photovoltaic use, featuring a 125 A rating and 1000 Vdc capability in a four-pole KD frame. By pairing a complete breaker with installation-friendly attributes and comprehensive documentation, it helps procurement teams meet code requirements while simplifying field integration and ongoing maintenance.
Product Information
Extended Description
KDPV4125WF01 Eaton: Eaton PV Guard / Solar complete molded case circuit breaker, K-frame, KD, Complete breaker, Fixed thermal, fixed magnetic trip type, Four-pole, 125A, 1000 Vdc, 5 kAIC, Without terminals, Photo voltaic, Freeze tested, 50°C, 80% rated
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
KDPV4125WF01
UPC
786685970998
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
Special features
Freeze tested
Amperage Rating
125 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 - KDPV4125WF01
Eaton Specification Sheet - KDPV4125WF01
Feature → The KD frame four-pole complete breaker delivers compact, modular protection for PV strings and DC feeders. Business Impact → Reduces panel congestion and wiring complexity, enabling faster installations and easier future upgrades. Application → Ideal for PV guard and solar circuit protection in commercial and utility-scale arrays. Long-tail keywords integrated include PVGuard solar circuit breakers, 1000 Vdc protection, molded case solar breakers, and four-pole PV MCCB. Feature → Freeze tested design and 50°C calibration ensure stable operation across outdoor climates. Business Impact → Minimizes nuisance trips and equipment damage in cold-start conditions and hot days. Application → Suitable for outdoor enclosures and harsh environments where temperature variance is common. Feature → 125 A amperage rating with 5 kAIC interrupt rating. Business Impact → Quick fault clearing protects inverters and cabling, reducing arc flash risk and downtime. Application → Critical for rapid fault isolation in large PV systems. Feature → Without terminals design simplifies wiring routing and minimizes terminal-related field issues. Business Impact → Speeds installation and reduces bottom-line wiring costs. Application → Beneficial for space-constrained panels and retrofit projects. Feature → UL Listed certification and Class Photovoltaic designation. Business Impact → Supports regulatory compliance and aligns with PV system standards. Application → Essential for projects requiring recognized safety certification and PV-class protection.
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FAQs
Yes. KDPV4125WF01 uses the KD frame and is described as a complete four-pole breaker designed to fit KD-compatible assemblies. It can replace or be integrated into Eaton PVGuard protection schemes without needing additional adapters, though you should verify terminal requirements and enclosure clearance for the wiring and bus connections.
The device is rated for 125 A with a 1000 Vdc maximum voltage and a 5 kAIC interrupt rating. It is a four-pole KD frame unit classified as Photovoltaic, with a T186 trip type and terminals shipped without terminals. These specs support reliable protection for PV DC circuits while enabling scalable system design.
Yes. The breaker is specifically designed for photovoltaic use, featuring a Photovoltaic class, 1000 Vdc rating, and freeze-tested performance. This makes it appropriate for solar arrays and PV guard protection in both commercial and utility-scale installations, complying with UL Listed safety expectations.
The product carries UL Listed certification, which supports code compliance and safety verification in many jurisdictions. Its photovoltaic designation and documented calibration and environmental testing further substantiate suitability for outdoor PV installations and harsh operating conditions.
With UL Listed certification, freeze-tested performance, and a robust 125 A/1000 Vdc rating, this breaker reduces downtime and maintenance complexity in PV systems. Its terminalless design simplifies wiring, while the 5 kAIC interrupt capability minimizes fault damage, contributing to lower replacement costs and improved system uptime over the lifecycle.