How to find the model number of a power distribution box

Check the label inside the distribution box door, inspect manufacturer markings, and note the type and configuration of breakers to identify the model.

Step 1: Look for the Manufacturer Label

Most distribution boxes have a label or nameplate inside the door or on the enclosure. This label typically includes:

• Manufacturer name
• Model number
• Rated voltage and current
• Compatible breaker types
• Standards compliance (e.g., IEC, UL, BS) Reading this label is the most direct way to identify the model of your distribution box .

Step 2: Inspect the Breakers and Internal Components

If the label is missing or unreadable:

• Examine the breakers: Different brands like Siemens, Square D, or Federal Pacific have distinct designs that can help identify the box .
• Check the internal layout: Note the number of ways, busbar arrangement, neutral and earth bar configuration, and DIN rail space .
• Look for dual power switches or special modules if present, as these can indicate specific models or series .

Step 3: Observe the Enclosure Type and Mounting

Distribution boxes come in various forms:

• Surface-mounted: Mounted on walls, common in industrial or retrofit applications
• Flush-mounted: Embedded in walls, typical in residential or commercial buildings
• Pole-mounted: Outdoor use for street lighting or utility applications
• Single-phase or three-phase: Indicates residential vs industrial use . The enclosure type and mounting style can narrow down the model or series.

Step 4: Cross-Reference with Manufacturer Documentation

Once you have the label information or visual characteristics:

• Search the manufacturer's website for the model number or series (e.g., GGD, GDH, PGL, GCK, GCS, MNS) to confirm specifications .
• Compare photos and datasheets to ensure the internal layout and rated parameters match your box.

Step 5: Consult a Licensed Electrician if Needed

If identification is unclear or the box is old:

• A licensed electrician can safely open the box, verify the model, and advise on compatibility or upgrades .
• Avoid forcing breakers or tampering with live circuits for safety reasons.

By following these steps—label inspection, internal component review, enclosure type observation, and manufacturer cross-reference—you can accurately identify the model of a power distribution box.