When working with mini split systems or outdoor electrical installations, choosing the right junction box is crucial for safety, durability, and ease of installation. This article showcases some of the best mini split junction boxes designed for waterproofing, electrical insulation, and versatility. Below is a summary table highlighting key features of the top products selected.
| Product Name | Brand | Waterproof Rating | Material | Dimensions (Inches) | Special Features |
|---|---|---|---|---|---|
| MAKERELE Mini Junction Box Outdoor IP68 | MAKERELE | IP68 | High-Quality Plastic | Small, max inner diameter 8mm | Waterproof, flame retardant, dust proof, underground use |
| DJC Supply 6″x6″x3″ PS Plastic Junction Box | DJC Supply | Dust and Weatherproof | Polystyrene (PS) | 6 x 6 x 3 | Lightweight, recyclable, excellent dielectric insulation |
| Eowpower IP66 Electric Junction Project Box | Eowpower | IP66 | Plastic and Metal | 4.3 x 3.1 x 2.8 | Includes 8-position 15A terminals |
| Southwire Mini X-Treme Portable Power Box | Coleman Cable | NEMA Type-1 | Plastic | Portable Size | 30 Amp, multiple GFCI outlets and breakers |
| DJC Supply 12″x10″x4.75″ PVC Waterproof Junction Box | DJC Supply | Waterproof | Polyvinyl Chloride (PVC) | 12 x 10 x 4.75 | Premolded conduit holes, lightweight, recyclable |
Content Navigation
- MAKERELE Mini Junction Box Outdoor Waterproof IP68
- DJC Supply 6″x6″x3″ Weatherproof PS Plastic Junction Box
- Eowpower 4.3 x 3.1 x 2.8 inches IP66 Electric Junction Box
- Southwire Mini X-Treme Portable Temporary Power Box
- DJC Supply 12″x10″x4.75″ PVC Waterproof Junction Box
- Buying Guide For Mini Split Junction Boxes
MAKERELE Mini Junction Box Outdoor Waterproof IP68
The MAKERELE Mini Junction Box offers an IP68 waterproof rating, making it ideal for harsh outdoor environments including underground electrical connections. Constructed from high-quality plastic, the enclosure is flame retardant, dustproof, and resistant to cracking or fading from sunlight exposure. It supports installation in horizontal or vertical orientations and is perfect for applications such as street lighting, yard lights, and floodlights.
Its design includes rotators that seal rubber gaskets around cable ends to ensure a tight waterproof connection. This feature simplifies installation and adds safety when connecting cables outdoors. The box accommodates cables with a maximum inner diameter of 8mm and features a clamshell-type closure for easy access.
DJC Supply 6″x6″x3″ Weatherproof PS Plastic Junction Box
This weather and dustproof junction box by DJC Supply is made from lightweight yet strong polystyrene (PS) plastic. PS is known for its superior electrical insulating properties, making this enclosure a safe option for protecting wiring and equipment. It also offers excellent durability while being recyclable and environmentally friendly.
With interior dimensions of 5.5″ x 5.5″ x 3″, the box is spacious enough to house wiring connections securely while resisting outdoor weather elements. Its polystyrene composition ensures that it will not easily degrade in various climates.
Eowpower 4.3 x 3.1 x 2.8 inches IP66 Electric Junction Box
The Eowpower junction box combines plastic and metal materials to provide a sturdy enclosure with an IP66 rating, indicating resistance against dust and powerful water jets. Its compact size of 4.3″ x 3.1″ x 2.8″ makes it suitable for mini split system connections and other small electrical projects.
The box features 8-position 15A terminals which facilitate organized wiring and ease of connections inside the enclosure. Weighing only 234 grams, it is lightweight and easy to handle during installation.
Southwire Mini X-Treme Portable Temporary Power Box
The Southwire Mini X-Treme Box offers a portable temporary power distribution solution with a 30 Amp capacity. It features a NEMA Type-1 enclosure designed to protect the internal components against dust and moisture to a certain degree. It converts one L14-30P input to eight 5-20R outlets, each protected by 20A circuit breakers and GFCI protection.
This box is particularly useful for construction sites or any temporary power needs where multiple outlets and safety are priorities. Its durable plastic housing ensures long-lasting use in demanding environments.
DJC Supply 12″x10″x4.75″ PVC Waterproof Junction Box
This DJC Supply junction box is made from strong and lightweight polyvinyl chloride (PVC), offering excellent durability and environmental safety as it is recyclable. Its larger size (12″ x 10″ x 4.75″) allows ample space for complex wiring arrangements and conduit management.
The enclosure includes premolded waterproof conduit holes sized 3/4″ and 1″ to facilitate easy installations without drilling. Simply remove the plastic cover to reveal the openings, simplifying conduit attachment. This box is a versatile choice for outdoor and wet location applications requiring robust protection.
Buying Guide For Mini Split Junction Boxes
Selecting the right mini split junction box depends on several factors that impact safety, installation ease, and longevity.
Waterproof Rating
Look for a minimum of IP66 or IP68 ratings for outdoor use to ensure protection against dust, rain, and submersion. The IP rating indicates how well the box can prevent water intrusion, essential for outdoor and underground installations.
Material Quality and Durability
Choose materials that resist UV degradation, cracking, and temperature extremes. Common materials include PVC, polystyrene (PS), and flame retardant plastics. Some boxes mix plastic with metal parts for added strength.
Size and Capacity
Determine how much internal wiring and components the box needs to house. Larger boxes with multiple conduit ports provide more flexibility, whereas smaller clamshell types can be easier to install in tight spaces.
Conduit Compatibility and Mounting Options
Pre-molded conduit holes or flexible entry options simplify installation. Consider if the box can be mounted horizontally, vertically, or even buried underground based on your project’s needs.
Electrical Insulation and Safety Certifications
Ensure the box provides excellent electrical insulation to prevent shorts and is compliant with industry safety standards. Look for features like GFCI protection or terminal blocks when applicable.
Environmental and Recycling Considerations
Opt for recyclable materials that minimize environmental impact without compromising durability. Some plastics offer safer options over traditional PVC in this respect.
By weighing these factors, you can select a mini split junction box that meets your installation requirements while providing safety and longevity.