300VDC Din Rail Mount Breaker, Single Pole, Polarized

300VDC Din Rail Mount Breaker, Single Pole, Polarized – High-Performance Circuit Protection for Solar Systems

• As the demand for solar and renewable energy systems grows across the United States, so does the need for reliable, safe, and long-lasting components that ensure the performance and protection of these systems.
• One such critical component is the 300VDC Din Rail Mount Breaker, Single Pole, Polarized—a robust, ETL-listed DC breaker that delivers consistent protection for modern solar applications.
• Designed for solar professionals and homeowners alike, this breaker is engineered for high voltage DC circuits, offering reliable circuit protection, quick installation, and seamless compatibility with MidNite Solar enclosures.
• It is a must-have for anyone building or upgrading a solar energy system.

Why the 300VDC Din Rail Mount Breaker, Single Pole, Polarized Is Essential

• In solar and energy storage systems, maintaining safety and system integrity is paramount. The 300VDC Din Rail Mount Breaker, Single Pole, Polarized is built specifically for DC voltage applications.
• It prevents overcurrent and short circuit damage while supporting high fault current interruption ratings—perfect for systems operating up to 300 volts DC.
• With new part numbers like MNEPV15-300-1PP and MNEPV30-300-1PP replacing older 150VDC and 300VDC models, this updated breaker line offers advanced features, consistent availability, and trusted performance.

Key Features

• Rated for 300VDC Applications
  Engineered to handle direct current voltages up to 300 volts, ideal for solar panel strings and battery banks.
• High Fault Current Protection
  Offers a 10,000 AIC (Ampere Interrupting Capacity), ensuring protection from high-energy fault conditions.
• ETL Listed
  Certified for safety and reliability in the U.S. and Canada when used in appropriate enclosures.
• Single Pole Design
  Compact yet powerful, suitable for various branch circuit configurations in solar applications.
• Polarized
  Ensures correct directional installation, maintaining safe and efficient power flow.
• Indoor Rated (Type 1 Enclosure)
  Suitable for indoor installations within compliant solar breaker boxes.
• 100% Current Rating at Ambient Temperature
  Designed to hold its full current rating regardless of temperature fluctuations.
• Wide Wire Range Compatibility
  Supports wire sizes from 14 AWG to 6 AWG, giving flexibility for a variety of solar setups.

Technical Specifications

• Product Name: 300VDC Din Rail Mount Breaker, Single Pole, Polarized
• Voltage Rating: 300V DC
• Current Ratings Available: 15A, 20A, 30A, 40A, 50A
• Amp Interrupting Capacity (AIC): 10,000 A
• Number of Poles: 1 (Single Pole)
• Environmental Rating: Type 1 (Indoor use only)
• Wire Size Range: 14 AWG to 6 AWG
• Mounting Type: DIN Rail Mount
• Torque Value: 20 In-Lbs (2.3 Nm)
• Certifications: ETL Listed for US & Canada
• Breaker Width: 1 inch (26mm)
• Warranty: 5-Year Manufacturer Warranty

Updated Model Replacement Chart

For those replacing older breakers, here’s how the new part numbers correspond to discontinued models:

• MNEPV15-300 → MNEPV15-300-1PP
• MNEPV20-300 → MNEPV20-300-1PP
• MNEPV30-300 → MNEPV30-300-1PP
• MNEPV40-300 → MNEPV40-300-1PP
• MNEPV50-300 → MNEPV50-300-1PP

These newer models are standardized, polarized, and readily available through solampio.com, ensuring continuous support for legacy systems and new builds alike.

Use Cases for the 300VDC Din Rail Mount Breaker, Single Pole, Polarized

This breaker is designed to serve a wide range of applications in both residential and light commercial solar systems:

1. Photovoltaic (PV) Panel Protection
   Breakers provide branch circuit protection for solar PV arrays, preventing overcurrent events from damaging panels or wiring.
2. Battery Bank Circuit Protection
   Ensure safe charging and discharging in 48V or higher battery systems commonly used in off-grid homes.
3. Charge Controller Protection
   Placed between the PV input and charge controller to prevent surge or overcurrent damage.
4. Inverter DC Input Protection
   Secure your inverter against reverse currents or potential short circuits with a reliable DC breaker.
5. Combiner Boxes and Load Centres
   Perfect for use in MidNite Solar MNPV or other compatible enclosures, offering modular, organized power distribution.

Benefits of Using the 300VDC Din Rail Mount Breaker, Single Pole, Polarized

• Reliable Safety Performance
  Provides overcurrent protection with a high AIC rating to prevent equipment damage or fire risk.
• Compact & Space-Saving
  The single-pole design minimizes space consumption in breaker panels and combiner boxes.
• Easy Installation
  DIN rail mounting allows for quick installation and future maintenance or replacement.
• ETL Certification Assurance
  Listed for compliance in both the U.S. and Canada, ensuring quality and safety standards are met.
• Long-Term Value
  With a 5-year warranty and robust construction, this breaker ensures long-lasting protection.
• Designed for Solar Use
  Unlike generic breakers, this unit is purpose-built for DC solar applications and meets the unique demands of renewable energy systems.

Who Should Use This Breaker?

The 300VDC Din Rail Mount Breaker, Single Pole, Polarized is ideal for:

• Solar Installers
  Professionals seeking a reliable, code-compliant breaker for new solar installations.
• DIY Solar Enthusiasts
  Homeowners building off-grid cabins or RV solar setups with a focus on safe circuit design.
• System Upgraders
  Users replacing discontinued breakers in older MidNite Solar installations.
• Contractors
  Electrical contractors needing high-voltage DC circuit protection in green building projects.

Why Buy from Solampio.com?

When you purchase the 300VDC Din Rail Mount Breaker, Single Pole, Polarized from solampio.com, you’re investing in quality, support, and long-term reliability. Here's what we offer:

• Authentic, ETL-Listed Components
  All products are verified and certified for compliance.
• Expert Support Team
  Speak to solar energy specialists for system design or installation advice.
• Fast U.S. Shipping
  Timely delivery across the United States with secure packaging.
• Affordable Pricing
  Competitive rates for installers and bulk orders.

Protection You Can Trust for Your Solar System

• The 300VDC Din Rail Mount Breaker, Single Pole, Polarized is a vital piece of any safe and reliable solar power system. Built to the highest industry standards, this breaker protects your investment and ensures efficient operation for years to come.
• With new model numbers replacing discontinued variants and improved performance specs, it's never been easier to upgrade or build your solar system with confidence.
• Visit solampio.com to order your 300VDC breaker today and take the next step toward safer, smarter solar energy management.