Overview
The Square D 9001-SKP1A9 is part of the Harmony 9001SK series of 30mm pilot lights, engineered for reliable status indication in industrial automation and control applications. This transformer-style unit operates at 110–120V AC with an internal transformer and screw-clamp terminal connections for straightforward installation into standard 30mm panel cutouts.
Key Features
- Transformer-integrated design with 110–120V AC supply
- 30mm diameter plastic bezel suited for corrosion-resistant applications
- Internal double-insulated bezel for enhanced reliability
- Screw-clamp terminal connections for simple wiring
- Standard 30mm panel cut-out compatibility
- Durable construction for oil-tight, dust-tight operation in industrial environments
Technical Specifications
- Voltage Rating: 110–120V AC, 50/60 Hz
- Mounting Style: Direct panel mount
- Panel Cut-Out: 30mm diameter
- Terminal Type: Screw-clamp
- Bezel Material: Plastic (black, corrosion-resistant)
- Protection Rating: IP66 (oil-tight, dust-tight, water-tight)
- Series: Harmony 9001SK
- Certifications: UL listed, CSA certified, CE marked, RoHS compliant
Typical Applications
- Industrial control panels and switchboards
- Heavy industrial equipment status indication (petrochemical, mining, metallurgy)
- Harsh environment monitoring (oil and gas, wastewater treatment)
- Manufacturing equipment visual feedback
- Electrical distribution and motor control centers
Compatibility & Replacements
Compatible With
- Harmony 9001SK series control stations and push buttons
- 30mm standard panel cut-outs (industrial control applications)
- 110–120V AC industrial control circuits (50/60 Hz)
- Screw-clamp wired systems and terminal blocks
Replaces / Drop-In Replacement For
- Other 9001SK standard pilot lights with 120V AC transformer supply
- Similar 30mm Harmony series indicator units requiring plastic bezel construction
Works With
- Square D (Schneider Electric) Harmony 9001K, 9001SK, and 9001KX series operators
- Industrial control and automation systems using 30mm modular components
- Screw-clamp terminal-based wiring configurations
- UL Type 4, 4X, and 13 control enclosures










