Article Overview
Horizontal distribution boxes vary by model, number of ways, and mounting type, with dimensions typically specified in length, width, and height.
Key Specifications
Horizontal distribution boxes are designed for safe and efficient electrical distribution in residential, commercial, and industrial applications. They typically include features such as insulated neutral links, copper busbars, earth bars, and removable gland plates for easy conduit connection . Boxes can be flush or wall-mounted, with double-door construction for easy access and maintenance . Materials are usually high-quality CRCA steel with anti-rust phosphating and powder coating for durability .
Typical Dimensions and Features Table
| Model / Type | Number of Ways | Length (mm) | Width (mm) | Height (mm) | Mounting Type | Gland Plates | Busbar Type | Notes |
|---|---|---|---|---|---|---|---|---|
| TOP-TS | 1–36 | 200–1200 | 150–400 | 100–300 | Wall / Flush | Top & Bottom, removable | Tinned electrolytic copper | Standard horizontal DB |
| TOP-TF | 1–24 | 250–1000 | 200–350 | 120–280 | Wall / Flush | Top & Bottom, removable | Copper | Compact design |
| TOP-LS | 1–18 | 300–900 | 200–300 | 150–250 | Wall / Flush | Top & Bottom, removable | Copper | Industrial use |
| TOP-PS | 1–36 | 400–1200 | 250–400 | 150–300 | Wall / Flush | Top & Bottom, removable | Copper | Residential / commercial |
| TOP-PF | 1–24 | 350–1000 | 200–350 | 150–280 | Wall / Flush | Top & Bottom, removable | Copper | Flexible configuration |
| TOP-S | 1–12 | 200–600 | 150–250 | 100–200 | Wall / Flush | Top & Bottom, removable | Copper | Small horizontal DB |
Additional Features
- Wiring Space: Generous internal space for easy installation of MCBs, RCCBs, and other devices .
- Safety: Busbars and terminals are shrouded to prevent hot spots and accidental contact .
- Installation Flexibility: Adjustable studs and nuts allow easy mounting and removal of the pan assembly .
- Customization: Many manufacturers offer tailor-made configurations beyond standard sizes, with over 200 combinations possible .
- Protection Rating: Typically IP42/IP43 for dust and water resistance . These specifications ensure that horizontal distribution boxes can accommodate a wide range of electrical setups while maintaining safety, durability, and ease of installation. For precise dimensions and ordering codes, manufacturers' catalogues such as ABB, Rockwell Automation, and C&S Electric provide detailed tables and diagrams .
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