Eaton KDPV4300WF01 PV Guard / Solar MCCB - UL Listed
Part Number: KDPV4300WF01
Quick Summary
PV Guard / Solar MCCB from Eaton provides reliable overcurrent protection for photovoltaic systems. In PV installations, space constraints, environmental extremes, and the need for rapid fault isolation can slow uptime and raise safety risk. This device carries UL Listed certification and is designed for 1000 Vdc PV arrays, with a robust freeze-tested performance to endure outdoor environments. By leveraging a 300 A rating and 5 kAIC interrupt capability, it supports scalable protection for commercial and utility-scale solar projects while aligning with KD frame compatibility and complete breaker design for streamlined integration.
Product Information
Extended Description
KDPV4300WF01 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, Freeze tested, 50°C, 80% rated
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
KDPV4300WF01
UPC
786685971056
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
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 - KDPV4300WF01
Eaton Specification Sheet - KDPV4300WF01
Feature: 300 A amperage rating and 1000 Vdc voltage rating aligned with PV system requirements. Business impact: enables reliable protection for high-current PV strings and DC distribution, reducing fault-related downtime and simplifying procurement for solar projects. Application: suitable for commercial rooftop and utility-scale PV installations employing KD frame complete breakers. Feature: Four-pole, KD frame, complete breaker construction. Business impact: improves system integrity by providing synchronized isolation across all poles, enabling safer maintenance and faster fault resolution. Application: PV combiner boxes and DC distribution panels where multi-pole protection is required. Feature: Fixed thermal and fixed magnetic trip (T186). Business impact: delivers consistent, predictable tripping behavior under overload or short-circuit conditions, enhancing safety and compliance. Application: critical PV protection where strict protection curves are mandated. Feature: 5 kAIC interrupt rating with 80% rated operation. Business impact: supports high-energy fault scenarios common in PV combiner and disconnect enclosures while offering reliable performance within derating guidelines. Application: design margins for outdoor PV installations and remote sites. Feature: Freeze-tested, 50°C calibration, and outdoor-capable design. Business impact: ensures dependable operation across temperature swings and environmental exposure, reducing field failures and service calls. Application: rooftop and ground-mounted PV systems with outdoor enclosures. Feature: UL Listed certification and photovoltaic-class rating. Business impact: aligns with safety and compliance standards, streamlining audits and installation approvals. Application: global PV projects requiring certified protection devices within 1000 Vdc circuits and solar-specific safety classifications.
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FAQs
KDPV4300WF01 uses a KD frame, four-pole configuration designed for complete breaker assemblies. It is compatible with KD-series panels and enclosures that accept complete breakers, and it ships without terminals to allow installer-specific terminations. Verify mounting dimensions (12 in depth, 8 in width, 6.5 in height) to ensure fit within your enclosure and maintain proper clearances for safe operation.
The device is rated for 300 A continuous current and 1000 Vdc, with a 5 kAIC interrupt rating. It features four poles and a T186 trip type, falls under the KD frame family, and is designed as a complete breaker for photovoltaic applications. It is 12 in long, 8 in wide, 6.5 in high and weighs 14.5 lb, with 80% rated operation.
Yes. The PVGuard device is designed for photovoltaic applications with outdoor exposure in mind, featuring freeze-tested performance and a 50°C calibration rating. Its 1000 Vdc rating makes it appropriate for PV arrays, and the UL Listed certification supports compliance in many regions. Ensure enclosure integrity and proper mounting to maximize outdoor reliability.
Multiple Eaton documents support design and installation, including the PVGard solar circuit breakers product aid, the Molded Case Circuit Breakers catalog, and the Eaton specification sheets specific to KDPV4300WF01. These downloads provide electrical ratings, trip characteristics, installation guidelines, and compliance data to support accurate selection and commissioning.
Eaton offers a warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This coverage applies to manufacturing defects and workmanship under normal use. For service support and replacement considerations, coordinate with Eaton authorized distributors and service teams during project planning.