Overview
The Appleton S-125 knockout blank is a snap-in steel seal designed to close 1-1/4″ knockout or sliphole openings in sheet metal electrical enclosures. This box contains 25 units, making it ideal for panel builders, systems integrators, and maintenance teams working on control panels, distribution boxes, and industrial automation systems. The snap-in design eliminates the need for tools or fasteners, reducing assembly time and labor cost.
Key Features
- Snap-In Design: No tools or fasteners required; quickly seals knockouts during panel construction or retrofit
- Steel Construction: Durable and corrosion-resistant for industrial environments
- 1-1/4″ Trade Size: Fits standard knockout holes in sheet metal enclosures and boxes
- Standards Compliant: Meets NEMA FB-1 and CSA C22.2 No. 18.3 specifications
- Bulk Pack: 25 blanks per box for economical multi-panel projects
Technical Specifications
- Size: 1-1/4 inch trade size
- Material: Steel
- Connection Type: Snap-In
- Length: 0.31 inches
- Height: 1.81 inches
- Standards: NEMA FB-1, CSA C22.2 No. 18.3
- Package Quantity: 25 units
- UPC: 781381667050
Typical Applications
- PLC control panels and electrical enclosures
- HMI and motor starter boxes
- Industrial automation distribution cabinets
- Panel retrofit and maintenance projects
- Electrical equipment rooms and junction boxes
Compatibility & Replacements
Compatible With
- Standard 1-1/4″ knockout sheet metal enclosures
- Electrical control panels and junction boxes
- NEMA-rated equipment cabinets
- PLC processor and HMI panel assemblies
Replaces / Drop-In Replacement For
- Generic 1-1/4″ snap-in knockout seals
- Manual knockout plugs and covers for 1-1/4″ holes
Works With
- All 1-1/4″ knockout sheet metal enclosure manufacturers
- Compatible with conduit fittings and cable entries
- Works in conjunction with IMC/rigid conduit systems
