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PTB516GV Specifications
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PTB516GV, Square D, I-Line tap box, 4W, 600V, 800-1600A, 50% integral ground bus
| Manufacturer | Square D | Subcategory | Tap Box |
| Family | I-Line | ||
| Manufacturer | Square D | ||
| Subcategory | Tap Box | ||
| Family | I-Line |
Electrical.com is NOT an authorized distributor for Square D and therefore the manufacturer’s warranty does not apply. This product does include an Electrical.com 2 year warranty.



We can test, inspect and repair your PTB516GV. All repairs include a 2-Year Electrical.com Warranty.

The Square D PTB516GV is a tap box bus plug from the Square D I-Line series, designed for use in -phase power distribution systems operating at up to 600V. This unit is rated for 1600A and features a 4-wire configuration with grounding.
The PTB516GV provides a short circuit interrupting rating of {aic rating}, supporting overcurrent protection requirements in high-demand installations. It integrates securely with Square D's I-Line busway systems and supports quick installation and maintenance through its accessible design and NEMA-compliant housing.
Available at Electrical.com, the Square D PTB516GV is part of our extensive inventory of bus plugs, parts and accessories. Our knowledgeable sales team is ready to assist with technical questions, product selection and support.