Overview
The Square D 9001-SKP1A9 is a 30mm pilot light from Schneider Electric’s Harmony 9001SK series, engineered for demanding industrial automation and control applications. Part of the 9001SK line with plastic bezels, this unit delivers reliable visual status indication in oil-tight, dust-tight, and water-tight enclosures. The transformer-based power supply simplifies integration into 110–120 VAC control circuits without requiring external step-down transformers.
Key Features
- 30mm diameter compact design fits standard panel cut-outs
- Transformer-powered 110–120 VAC operation with screw-clamp terminal connections
- Double-insulated plastic bezel provides superior corrosion resistance
- IP66 rated with UL Type 4, 4X, and 13 enclosure compliance
- Robust construction suitable for petrochemical, metallurgical, and mining environments
- Simple mounting and field-replaceable components for reduced downtime
Technical Specifications
- Series: Harmony 9001SK
- Diameter: 30 mm (1.18 in)
- Power Supply: 110–120 VAC, 50/60 Hz (transformer-style)
- Terminal Type: Screw-clamp connections
- Bezel Material: Thermoplastic (double-insulated plastic)
- IP Rating: IP66
- UL Certification: Type 4, 4X, 13
- Operating Environment: Oil-tight, dust-tight, water-tight without boots
- CE Marked: Yes
- RoHS Compliant: Yes
Typical Applications
- Status indication on motor starters and soft-starters
- Machine run/ready/alarm indication in manufacturing lines
- Process monitoring in petrochemical and chemical plants
- Pump and compressor control panel indication
- Conveyor system status signaling
- Industrial machine tool and automation control stations
Compatibility & Replacements
Compatible With
- Harmony 9001SK operator bodies and bezels
- Square D light modules (standard 30 mm light block assemblies)
- Standard 30 mm panel cut-outs (1.18 in diameter)
- 110–120 VAC industrial control circuits
- Industrial push-button and selector switch assemblies in the 9001SK family
Replaces / Drop-In Replacement For
- Earlier transformer-style 9001SK pilot lights with similar voltage ratings
- Verify compatibility with your system integrator before ordering for legacy equipment
Works With
- Harmony 9001K/SK/KX Series control stations
- 30 mm panel-mounted operator assemblies
- Industrial control and signal relay circuits
- NEMA Type 4/4X/13 enclosure applications


