Overview
The Square D 9991-KE3 is a Type 3R NEMA 3R rated enclosure engineered for manual motor starter installations in industrial and commercial environments. Manufactured by Schneider Electric (Square D brand), this sheet steel enclosure provides weather-resistant protection and is designed specifically for use with Class 2510 motor starting switches. The compact, wall-mounted design makes it ideal for retrofit installations and equipment upgrades where space is limited.
Key Features
- NEMA 3R Rating: Weather-resistant steel construction, tested for outdoor and damp indoor environments
- Class 2510 Compatibility: Direct fit for Class 2510 motor starting switches (Types F01, F02, KO1–KO6)
- Wall Mount Configuration: Space-efficient surface mounting for existing control panels and junction locations
- Compact Dimensions: 5.26 in H × 4.3 in W × 2.82 in D minimizes footprint in crowded installations
- Grey Painted Steel: Durable powdercoat finish resists rust and corrosion in harsh industrial settings
- Used / Tested Unit: Surplus stock fully inspected and functional, significant cost savings over new units
Technical Specifications
- Series: 9991 (manual starter enclosure series)
- NEMA / Type Rating: Type 3R / NEMA 3R
- Material: Sheet steel, powder-coated grey
- Height: 5.26 inches
- Width: 4.3 inches
- Depth: 2.82 inches
- Weight: 2.17 lbs
- Mounting: Wall mount
- Compatible Switches: Class 2510 Types F01, F02, KO1, KO2, KO2C, KO3, KO3B, KO6
- Color: Grey
- Condition: Used, fully tested
- Country of Origin: Mexico
Typical Applications
The Square D 9991-KE3 is widely deployed in motor control circuits, including:
- Machine tool and production line motor starters
- HVAC and refrigeration unit control panels
- Pump and compressor motor protection enclosures
- Equipment retrofit and modernization projects where Class 2510 starters are already in use
- Indoor and outdoor industrial environments requiring NEMA 3R weather protection
Compatibility & Replacements
Compatible With
- Class 2510 manual motor starting switches (all compatible types)
- Schneider Electric / Square D control ecosystems
- Industrial motor control and branch circuits rated for Class 2510 starters
- NEMA 3R-rated control panels and enclosure assemblies
Replaces / Drop-In Replacement For
The Square D 9991-KE3 is a direct replacement enclosure for any application previously using this model. Verify that your existing Class 2510 switch type (F01, F02, KO1–KO6) is listed in the compatible types before ordering. Contact your system integrator or Schneider Electric Customer Care (1-888-778-2733) for configuration confirmation.
Works With
- Class 2510 three-phase and single-phase motor starters
- Square D / Schneider Electric manual and electromagnetic motor control devices
- NEMA-rated industrial control circuits (600 Vac and below)
- OEM equipment control panel builders and retrofit integrators
