Description
MidNite Solar MNPV12-250 Solar PV Combiner Box – 300V DC
The MidNite Solar MNPV12-250 Solar PV Combiner Box provides a dependable solution for combining multiple solar panel strings into a centralized electrical connection. Designed for residential, commercial, and off-grid solar installations, this combiner enclosure helps organize photovoltaic wiring while providing space for compatible DC circuit breakers.
With support for high-voltage solar arrays up to 300V DC, the MNPV12-250 offers flexibility for a variety of solar power configurations. Furthermore, its durable aluminum construction and outdoor-rated enclosure make it suitable for demanding installation environments.
Whether you are building a new solar energy system or upgrading an existing installation, this combiner box provides a practical way to manage multiple photovoltaic input circuits.
Key Features and Benefits
- 300V DC Compatibility: Designed for solar photovoltaic applications operating within the enclosure’s specified voltage limits.
- Multiple PV Inputs: Accommodates up to six solar input circuits when configured with compatible 300V DC breakers.
- Durable Aluminum Construction: Provides a strong, corrosion-resistant enclosure for long-term installation.
- NEMA 3R Outdoor Rating: Designed to protect internal electrical components from rain and other typical outdoor conditions when properly installed.
- Organized Circuit Connections: Provides centralized wiring connections for multiple solar panel strings.
- Flexible System Integration: Suitable for compatible off-grid, hybrid, and grid-connected photovoltaic systems.
- Service Accessibility: Allows installers to access circuit connections and protective devices for inspection and maintenance.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | MidNite Solar |
| Model | MNPV12-250 |
| Product Type | Solar PV Combiner Box |
| Maximum System Voltage | 300V DC |
| PV Input Circuits | Up to 6 with compatible breakers |
| Breaker Capacity | Up to 50A per circuit, subject to configuration |
| Enclosure Material | Aluminum |
| Environmental Rating | NEMA Type 3R |
| Installation | Outdoor or indoor, as permitted |
| Circuit Breakers | Not included; sold separately |
Designed for Off-Grid and Grid-Connected Solar Systems
The MidNite Solar MNPV12-250 is particularly useful for solar installations containing several parallel photovoltaic strings.
For example, larger off-grid solar arrays often require multiple strings to deliver the necessary power to an MPPT solar charge controller. Instead of routing every string independently to the controller, installers can use a properly configured combiner box to consolidate connections.
Additionally, compatible circuit breakers provide individual circuit overcurrent protection where required. This arrangement can simplify troubleshooting and help technicians identify individual solar array circuits.
For grid-connected and hybrid installations, the enclosure can also serve as part of a properly engineered photovoltaic wiring system.
Durable Outdoor Construction
Solar equipment must withstand changing weather conditions throughout the year. Therefore, the MNPV12-250 features an aluminum enclosure designed for outdoor installations.
Its NEMA 3R rating provides protection against falling rain and sleet when the enclosure is correctly mounted and sealed. However, the enclosure is not intended for submersion or direct high-pressure water exposure.
Proper mounting, approved conduit fittings, and suitable cable-entry methods help maintain the enclosure’s environmental protection.
Installation and Electrical Compatibility
Before installation, verify that the solar array’s maximum corrected open-circuit voltage remains within the combiner’s rated voltage.
In addition, circuit breakers must be selected according to the photovoltaic modules’ electrical characteristics, conductor ampacity, applicable electrical codes, and MidNite Solar’s approved configurations.
Installers should also confirm that the combined output current does not exceed the ratings of the busbars, terminals, or connected equipment.
For safe operation, installation should follow the manufacturer’s instructions and applicable electrical regulations.
Important: Circuit Breakers Sold Separately
This MNPV12-250 combiner box is supplied WITHOUT circuit breakers.
Compatible 300V DC circuit breakers must be purchased separately. Consequently, customers can select the appropriate breaker ratings for their specific solar array configuration.
Why Choose the MidNite Solar MNPV12-250?
MidNite Solar manufactures equipment designed for renewable energy applications. The MNPV12-250 provides a versatile solution for organizing multiple photovoltaic circuits while supporting properly selected protective devices.
At Geo Eco Systems, we supply dependable solar equipment for DIY installers, off-grid homeowners, and professional solar system builders.
Order the MidNite Solar MNPV12-250 Solar PV Combiner Box for $299.00 and build your solar installation with reliable, organized PV connections.
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