1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the United CSS HT-2Way IP65 Waterproof Electrical Circuit Breaker Distribution Box. This product is designed to offer secure and reliable protection for electrical circuits in various environments, particularly those requiring water and dust resistance.
2. Product Overview
The United CSS HT-2Way Distribution Box is an IP65-rated enclosure for circuit breakers and fuse holders. Its robust ABS + PC construction ensures durability and protection against environmental elements. The transparent cover allows for easy monitoring of internal components without compromising the enclosure's integrity.
Image 2.1: The United CSS HT-2Way IP65 Waterproof Electrical Circuit Breaker Distribution Box shown with its transparent cover, two M20x1.5 waterproof nylon cable glands, two silicone waterproof plugs, and four box screws.
Image 2.2: An interior view of the distribution box with the transparent cover open, revealing the integrated DIN rail mounting bracket and the 'HT-2WAY' and 'United CSS' branding.
3. Safety Information
WARNING: Electrical work should only be performed by qualified personnel. Always disconnect power before installation or maintenance. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ensure all local and national electrical codes are followed.
- Verify that the power supply is completely off before beginning any work.
- Use appropriate personal protective equipment (PPE).
- Do not exceed the specified current ratings for the circuit breakers or the enclosure.
4. Package Contents
Verify that all items listed below are present in your package:
- 1 x Waterproof Distribution Box (2-way)
- 2 x Waterproof Nylon Cable Gland (M20x1.5)
- 2 x Silicone Waterproof Plug
- 4 x Box Screws
Image 4.1: The product packaging, displaying the UPC barcode 0198715726862 and product information.
5. Setup and Installation
This distribution box is designed for use with DIN-rail mounted Miniature Circuit Breakers (MCB) or DIN-rail mounted fuse holders. It includes an integrated DIN rail for straightforward installation.
5.1. Applications
Common applications include outdoor installations, such as between solar panels and a solar inverter in household or RV solar systems. It is compatible with both DC Circuit Breakers (for solar applications) and AC Circuit Breakers, as well as other DIN-rail mounted products.
5.2. Mounting the Box
- Select a suitable mounting location, ensuring it is a flat and stable surface.
- Use the provided box screws to securely fasten the distribution box to the chosen surface.
5.3. Installing Circuit Breakers/Fuse Holders
- Open the transparent cover of the distribution box.
- Mount your DIN-rail compatible Miniature Circuit Breaker (MCB) or fuse holder onto the integrated DIN rail inside the box. Ensure it clicks securely into place.
- Refer to the specific instructions for your MCB or fuse holder for proper wiring connections.
Image 5.1: A diagram illustrating the dimensions of compatible circuit breakers. The box can accommodate two single-pole 18mm wide breakers or one double-pole 36mm wide breaker.
5.4. Cable Entry and Sealing
The box includes waterproof nylon cable glands and silicone plugs to maintain its IP65 rating.
- Drill appropriate holes for cable entry in the designated areas of the box, if not pre-drilled.
- Insert the cables through the M20x1.5 waterproof nylon cable glands.
- Tighten the cable glands around the cables to create a watertight seal.
- Use the silicone waterproof plugs to seal any unused cable entry points to maintain the IP65 rating.
Image 5.2: A close-up view highlighting the waterproof seal integrated into the distribution box, essential for its IP65 rating.
Image 5.3: The distribution box with water droplets on its surface, visually confirming its waterproof design and IP65 rating.
6. Operation
Once the circuit breaker(s) or fuse holder(s) are installed and wired, the distribution box functions as a protective enclosure. The transparent cover allows for visual inspection of the breaker status (ON/OFF) without needing to open the box, maintaining its environmental protection.
7. Maintenance
- Regular Inspection: Periodically check the transparent cover and the main body for any signs of damage, cracks, or wear.
- Seal Integrity: Ensure the waterproof seal around the cover and the cable glands remain intact and free from debris. Replace if damaged.
- Cleaning: Clean the exterior of the box with a damp cloth. Avoid using harsh chemicals that could damage the plastic material.
- Component Check: Occasionally verify that the circuit breakers or fuse holders inside are securely mounted and functioning correctly.
8. Troubleshooting
This distribution box is a passive enclosure. Most operational issues will relate to the circuit breaker or the electrical circuit itself. Refer to the instruction manual of your specific circuit breaker or fuse holder for troubleshooting electrical faults.
- Water Ingress: If water is found inside the box, immediately disconnect power. Inspect all seals, cable glands, and plugs for proper installation and damage. Replace any compromised components.
- Cover Not Sealing: Ensure no debris is obstructing the seal and that the cover is properly latched.
9. Specifications
| Model | HT-2Way |
| Brand | United CSS |
| Material | ABS + PC |
| Waterproof Rating | IP65 |
| Number of Circuits | 2 |
| Product Dimensions (L x W x H) | 3.5" x 2.4" x 4.8" (8.8 cm x 6.1 cm x 12.2 cm) |
| Weight | 4.97 ounces (0.14 kg) |
| AC Adapter Current (Max) | 63 Amps (for compatible breakers) |
Image 9.1: A visual representation of the distribution box dimensions: 6.1 cm (2.4 inches) width, 8.8 cm (3.5 inches) depth, and 12.2 cm (4.8 inches) height.
10. Warranty and Support
For warranty information and customer support, please refer to the United CSS official website or contact your point of purchase. Keep your purchase receipt for any warranty claims.