Eaton KDPV4150W PV Guard Solar MCCB - UL Listed
Part Number: KDPV4150W
Quick Summary
The KDPV4150W PV Guard is a complete molded case circuit breaker for photovoltaic systems. Engineers often struggle with protecting solar arrays from DC faults and temperature variations in outdoor installations. UL Listed and CSA Certified, this device is designed for 1000 Vdc PV strings with a four-pole KD frame. With fixed thermal and fixed magnetic trip (T186), it delivers fast fault interruption and predictable protection, helping compliance and safety. Coupled with its compact footprint and terminalless design, it reduces wiring complexity and total cost of ownership while enabling faster field installation.
Product Information
Extended Description
KDPV4150W Eaton: Eaton PV Guard / Solar complete molded case circuit breaker, K-frame, KD, Complete breaker, Fixed thermal, fixed magnetic trip type, Four-pole, 150A, 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
KDPV4150W
UPC
786685883311
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
Amperage Rating
150 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
Selling Policy 25-000 - Distribution and Control Products and Services
PV guard complete breaker with a four-pole KD frame simplifies DC protection and reduces panel footprint, enabling faster commissioning and easier integration in string inverters, junction boxes, and combiner panels. Fixed thermal and fixed magnetic trip type (T186) delivers precise coordination and fast fault clearance, improving safety and reducing risk of cascading failures in PV arrays. The 150 A rating with a 5 kAIC interrupt capability and 50°C calibration supports operation in hot outdoor environments while maintaining protective performance, ensuring code compliance and reliable uptime in sunny climates. Terminals without terminals design reduces wiring and simplifies replacement in retrofits, while in new builds it speeds installation with cleaner bus connections and fewer terminal blocks. At 12 in L × 6.5 in H × 8 in W and 14.5 lb, the unit fits standard MCCB enclosures and eases logistics; Eaton’s warranty and support provide predictable maintenance planning.
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FAQs
The KDPV4150W uses a four-pole KD frame designed for 150 A operation at up to 1000 Vdc. Install in a compatible MCCB enclosure, connect conductors per the terminalless design, and verify 50°C calibration. Ensure the system is UL Listed and CSA Certified compliant. Use proper bus connections, secure mounting, and confirm conductor sizing for 5 kAIC fault current. This setup simplifies wiring and reduces field install time, particularly in PV arrays and inverter housings.
Key specifications include amperage rating of 150 A, voltage rating of 1000 Vdc, and an interrupt rating of 5 kAIC. The trip type is T186, and the frame is KD with a complete breaker design. It is rated 80% and configured as a four-pole device with no terminals, tailored for PV applications and DC protection in solar installations. These specs enable reliable fault interruption and code-compliant performance.
Yes. The KDPV4150W is calibrated at 50°C and rated 80% of its nominal capacity, making it suitable for hot outdoor PV environments. Its photovoltaic class, four-pole design, and 1000 Vdc rating support protection for solar arrays, combiner boxes, and inverters operating under elevated ambient temperatures, helping maintain protective reliability and system uptime.
The device is UL Listed and CSA Certified, confirming compliance with recognized safety standards for electrical protection equipment. This simplifies approval processes, supports code compliance in PV installations, and provides assurance to engineers and procurement teams that the breaker meets essential safety and performance requirements for solar projects.
Eaton offers a warranty per Selling Policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. Plan maintenance to align with this window, and maintain proper documentation for compliance audits. The terminalless design and robust DC protection also reduce field service time, contributing to lower lifecycle costs and higher ROI.