Eaton MDLPV3300W PV Guard / Solar MCCB - UL Listed
Part Number: MDLPV3300W
Quick Summary
Eaton MDLPV3300W PV Guard solar MCCB protects photovoltaic systems with reliable, code-compliant isolation. Design engineers often struggle to meet high voltage PV protection while minimizing installation complexity and downtime. UL Listed certification and photovoltaic-class construction support NEC/UL PV standards and field installation confidence. This combination helps OEMs and installers realize faster compliance, safer protection, and lower lifecycle costs. With a 1000 Vdc rating and 7.5 kAIC interrupt capacity, it supports scalable PV deployments. The labeled MDL frame and compact footprint simplify panel layouts and service planning for installers. Together with Eaton's PVGard ecosystem, the MDLPV3300W delivers dependable protection, easy mounting, and clear documentation for compliance audits. For procurement teams, the MDLPV3300W also aligns with Eaton's PVGuard family, enabling bulk sourcing and standardized maintenance.
Product Information
Extended Description
MDLPV3300W Eaton: Eaton Series C DC/PvGard complete molded case circuit breaker, MDL-frame, MDL, Complete breaker, Fixed thermal, fixed magnetic trip type, Three-pole, 300A, 1000 Vdc, 7.5 kAIC at 1000 Vdc, Without terminals, Photo voltaic, 80% rated
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
MDLPV3300W
UPC
786685882789
Product Length/Depth
4.06 in
Product Height
8.25 in
Product Width
8.25 in
Product Weight
28.4 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
Type
Complete breaker
Amperage Rating
300 A
Voltage rating
1000 Vdc
Trip Type
T186
Circuit breaker type
MDL
Circuit breaker frame type
Complete breaker
Rating
80% rated
Terminals
Without terminals
Frame
MDL
Class
Photovoltaic
Interrupt rating
7.5 kAIC at 1000 Vdc
Number of poles
Three-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 - MDLPV3300W
Eaton Specification Sheet - MDLPV3300W
Feature: The MDLPV3300W uses a complete molded case design in the MDL frame to deliver DC protection for PV circuits up to 1000 Vdc. Business Impact: This enables robust, code-compliant protection that reduces fault-related downtime and simplifies coordination with upstream disconnects. Application: Ideal for three-pole 300 A protection in PV arrays, midstream combiner boxes, and inverter-input protections across rooftop and utility-scale solar installations.Feature: Fixed thermal and fixed magnetic trip (T186) provide precise overload and short-circuit response. Business Impact: Improves protective coordination, minimizes nuisance trips, and supports fast fault isolation, preserving PV generation. Application: Suited for high-current DC feeders in commercial PV deployments, where reliable trip profiles maintain system availability.Feature: UL Listed certification and photovoltaic-class construction back PV-specific protection needs. Business Impact: Streamlines regulatory approvals, reduces documentation burden, and aligns with PV standards, contributing to faster project commissioning. Application: Used across solar farms, rooftop arrays, and carport installations that demand PV-grade breakers with clear PV documentation.Feature: Compact footprint and panel-mount practicality with dimensions 8.25 in high and wide, 4.06 in deep, weight 28.4 lb. Business Impact: Fits in space-constrained enclosures, minimizes required panel real estate, and lowers installation time. Application: Enables straightforward integration in standard electrical rooms, PV combiner boxes, and utility-scale DC distribution panels.Feature: Terminals are not included; designed for PVGuard ecosystem compatibility. Business Impact: Reduces stocking complexity and procurement planning by aligning with Eaton's complete PVGuard line. Application: Field installs in projects where a PVGuard complete breaker is standard, ensuring consistent wiring practices and service support.Feature: One-year warranty from installation or 18 months from shipment. Business Impact: Provides predictable coverage, improving risk management for procurement and maintenance. Application: Suitable for commercial solar deployments, OEM integrations, and service contracts that require defined warranty terms.
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FAQs
MDLPV3300W is designed for DC protection in photovoltaic installations up to 1000 Vdc. It’s a three-pole, 300 A unit with a complete MDL frame, intended for PV arrays, combiner boxes, and inverter-input protection to ensure safe, code-compliant operation.
Key ratings include 300 A amperage, 1000 Vdc voltage, and a 7.5 kAIC interrupt capacity. It uses a T186 trip type and is a three-pole MDL frame complete breaker, with 80% rated as part of its specification.
Yes, the MDLPV3300W is UL Listed. The photovoltaic class designation indicates the breaker is specifically designed for PV DC protection, aligning with PV-related standards and installation practices for solar projects.
The device dimensions are 8.25 in high by 8.25 in wide, 4.06 in deep, with an approximate weight of 28.4 lb. It is designed as a three-pole, MDL frame complete breaker with terminals not included, optimized for PVGuard-compatible installations.
The product carries Eaton's policy: one year from installation or eighteen months from shipment, whichever occurs first. This provides predictable coverage and supports maintenance planning for solar deployments and OEM integrations.