A terminal box in CAD is typically represented as a rectangular or slim enclosure block, often with connection points for wires and optional attributes for labeling and catalog data.

Schematic Representation

In AutoCAD Electrical, a terminal box can be represented using schematic terminal symbols, which are inserted as blocks in a drawing. These symbols can have different shapes such as square, round, hexagon, diamond, or triangle, depending on the terminal style . Each symbol can represent a single-level or multi-level terminal, with attributes like wire numbers, tag strips, manufacturer, and catalog codes displayed above or near the rectangle . Wire connection points can be added on all sides to allow horizontal or vertical wiring.

CAD Block Representation

For 2D or 3D CAD modeling, terminal boxes are often drawn as rectangular enclosures with a slim profile, sometimes labeled as WCB (wall-mounted terminal boxes). These blocks can include details such as mounting flanges, knockouts, or internal terminal strips . In CAD libraries, terminal boxes are available as DWG blocks that can be inserted into architectural or electrical layouts, allowing designers to place them accurately in panel layouts or building plans.

Insertion and Editing

In AutoCAD Electrical, terminal boxes are inserted via the Insert Components Panel or Catalog Browser, where you select the block type and terminal style. After insertion, the Insert/Edit Terminal Symbol dialog box allows you to edit attributes, wire numbers, and spacing between terminals . Multi-level terminals can be associated together to form a complete terminal strip, and the Terminal Strip Editor can manage multiple terminals in a panel layout .

Visual Summary

• Shape: Rectangular or slim enclosure
• Attributes: Wire numbers, tag strips, manufacturer, catalog codes
• Connection points: Left, right, top, bottom for wires
• Styles: Square, round, hexagon, diamond, triangle
• CAD format: DWG block for insertion into drawings This combination of schematic symbols and CAD blocks allows engineers and designers to accurately represent terminal boxes in both electrical schematics and physical panel layouts.