Greenlee 12308 Knockout Punch Unit 1-1/4 Inches

Product Description

The GREENLEE 12308 is a knockout punch unit designed to cut clean, precise holes in electrical enclosures, panels, and conduit bodies. The punch features a unique profile that splits slugs during the cut, making slug removal fast and straightforward without digging or prying. Built to work with standard Greenlee dies and draw studs, the 12308 is compatible with battery-powered, hydraulic, ratchet, and manual drivers. Electricians and low-voltage installers reach for this punch when adding conduit entries to existing enclosures or fabricating new panel layouts on the job.

This punch unit is suited for use in residential and commercial electrical work wherever a 1-1/4 inch knockout is required. Common applications include adding conduit knockouts to metallic or non-metallic enclosures, junction boxes, and load centers. Because it accepts standard Greenlee dies and draw studs, it integrates directly into existing Greenlee knockout tooling setups without requiring additional adapters.

Key Features

• Unique punch profile splits slugs for fast, tool-free slug removal
• Cuts 1-1/4 inch knockouts in electrical enclosures and panels
• Compatible with battery-powered, hydraulic, ratchet, and manual drivers
• Uses standard Greenlee dies and draw studs for broad tooling compatibility
• Designed for repeated, consistent performance in field and shop use

Compatibility

Designed for use with standard Greenlee dies and draw studs, and compatible with battery-powered, hydraulic, ratchet, and manual knockout drivers.

Installation Notes

Knockout punch work is typically performed by licensed electricians following NEC guidelines for conduit entry sizing and enclosure integrity. Always de-energize and lock out any panel or enclosure before beginning knockout operations. Ensure the draw stud and die are properly seated and aligned before applying drive force to avoid damage to the punch or workpiece. Inspect the punch edge for wear or chipping regularly, as a damaged punch profile affects cut quality and slug ejection.