MidNite Solar 4-Pole NEMA 4X Disconnecting Combiner Box MNSOB4X-4P

The MidNite Solar MNSOB4X-4P is a rugged 4-pole outdoor disconnecting combiner box built for extreme conditions. With a weatherproof NEMA 4X polycarbonate enclosure and included 4-pole 600VDC disconnect switch, it is the ideal solution for safely combining and disconnecting multiple PV strings. Designed for code-compliant installations, the MNSOB4X-4P is UL 1741 and CSA listed for use in renewable energy systems.

Key Benefits

4-Pole Disconnect: Allows full disconnection of positive and negative conductors across two circuits.

NEMA 4X Enclosure: UV-stable polycarbonate body is corrosion- and weather-resistant.

UL 1741 Listed: Fully compliant with U.S. and Canadian solar installation codes.

Pre-Wired: Factory-assembled switch for faster field wiring and reduced labor time.

Mounting Flexibility: Lightweight design for easy wall or pole mounting near PV arrays or inverter inputs.

Special Technology

Heavy-Duty Rotary Disconnect: Rated for 600VDC operation, handles PV string voltages with ease.

Integrated Strain Relief: Cable entry points include gland support for clean and secure terminations.

Touch-Safe Interior: Maintains NEC-compliant clearance and operator protection.

Rain-Tight & Corrosion-Resistant: Built for long-term performance in marine, desert, or humid climates.

Warranty

Covered by MidNite Solar’s 5-year limited warranty on enclosure and disconnect assembly components.

Best Use

PV Array String Disconnect: Safely combine and isolate multiple solar strings before inverter input.

Battery-Backed Systems: Ideal for DC-coupled solar + storage applications with NEC shutdown compliance.

Remote Solar Sites: Use in off-grid and telecom solar where robust outdoor protection is essential.

Commercial Rooftops: Multiple MNSOB4X boxes can be combined for scalable string management.

Specifications table

About MidNite Solar:

MidNite Solar is a U.S.-based manufacturer known for innovative, NEC-compliant power electronics and solar components. Their product line includes combiner boxes, charge controllers, breakers, and battery enclosures designed for off-grid, grid-tied, and hybrid energy systems.

Why Buy From US Solar Supplier?

As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.

Need Assistance?
We’re here to help! If you have any questions or need more information before making your purchase, don’t hesitate to call us at 1-800-230-7004. Our knowledgeable and friendly team is ready to assist you with product details, installation advice, or the purchasing process.

Why Buy From Us?
Trusted Supplier: We work with Tier 1 manufacturers who stand behind their products.

Expert Support: Our team is here to guide you every step of the way.

Manufacturer-Backed Warranties: Enjoy peace of mind with the 5-year product warranty directly from the manufacturer.

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Join the many satisfied customers who have trusted us for their solar needs. Add to your cart now to secure your high-efficiency solar panels and take the next step towards sustainable energy!