Overview
The Square D 9999-A-1 pushbutton station kit is a cover-mounted control unit designed for industrial motor control applications. This kit enables straightforward start/stop pushbutton operation on Size 0 and Size 1 NEMA-type contactor and starter enclosures. The 9999-A-1 is field-installable, allowing technicians and integrators to retrofit existing control panels without factory modification.
Key Features
- Cover-mounted design for NEMA 1, 3R, 4, and 12 Type S enclosures
- Start/stop pushbutton configuration
- Rated for Size 0 and Size 1 motor starters and contactors
- Field-installation ready with pre-supplied leads and clearly illustrated instructions
- Factory-equivalent performance and fit
Technical Specifications
| Manufacturer | Square D / Schneider Electric |
| Part Number | 9999-A-1 (also listed as 9999A1) |
| Product Type | Pushbutton Station Kit |
| Operation | Start/Stop |
| Size Rating | Size 0/1 |
| NEMA Enclosure Classes | NEMA 1, 3R, 4, 12 |
| Weight | 0.20 lbs |
| Installation Method | Field-mounted (cover-installed) |
| Supplied With | Leads and illustrated instructions |
Typical Applications
- Motor starter and contactor enclosure retrofit and upgrades
- Industrial manufacturing and equipment control
- Commercial HVAC and pump motor control
- General-purpose machinery start/stop operation
- Control panel modernization and maintenance replacement
Compatibility & Replacements
The 9999-A-1 is designed as a factory-equivalent control unit for Size 0 and Size 1 NEMA Type S starters and contactors. It is a direct field-replacement for existing 9999 series pushbutton kits. The kit mounts directly on enclosure covers and is compatible with NEMA 1, 3R, 4, and 12 rated cabinets. Note: This part has been discontinued by the manufacturer but remains available through authorized distributors as new stock.
