Overview
The Square D 8903-LG80 /D is an electrically held multipole lighting contactor designed for industrial and commercial lighting control applications. This 8-pole contactor delivers 30A switching capacity for fluorescent loads and 20A for tungsten loads at 600V, with a 110/120VAC 50/60Hz operating coil. Housed in a NEMA 1 painted sheet steel enclosure and UL Listed/CSA Certified, it provides reliable contact switching for multi-circuit lighting installations.
Key Features
- Electrically held 8-pole design with 8 normally open (NO) contacts
- Field-convertible contacts—easily switch from NO to NC configuration
- Rated 30A fluorescent / 20A tungsten at 600V
- 110/120VAC 50/60Hz interchangeable operating coil
- Screw clamp terminal connections for secure wiring
- Easily replaceable coil and contacts for serviceability
- UL Listed and CSA Certified for safety compliance
Technical Specifications
- Poles: 8 pole
- Contact Configuration: 8 NO (field-convertible to NC)
- Voltage Rating: 600VAC
- Current Rating (Fluorescent): 30A
- Current Rating (Tungsten): 20A
- Coil Voltage: 110/120VAC ±10%
- Frequency: 50/60Hz
- Terminal Type: Screw clamp
- Enclosure Type: NEMA 1 painted sheet steel
- Enclosure Dimensions: 12.69″ H × 7.81″ W × 6.03″ D
- Operating Coil: Interchangeable (additional coil voltages available)
- Certifications: UL Listed, CSA Certified
- Series: 8903L
- Condition: Used
Typical Applications
The Square D 8903L series lighting contactors are commonly used in:
- Multi-floor building lighting control and scheduling systems
- Parking lot and exterior lighting circuits
- Commercial HVAC and facility lighting automation
- Industrial warehouse and factory lighting panels
- Fluorescent and incandescent ballast switching
- Time-clock controlled lighting installations
Compatibility & Replacements
Compatible With
- Standard 110/120VAC control circuits and coil supplies
- Time clock controls and photoelectric switches
- Manual and automatic lighting control systems
- NEMA enclosure mounting and panelboard applications
- Interchangeable operating coils for 220/240/277/480VAC operation (separately available)
Replaces / Drop-In Replacement For
- Square D 8903LG80V02 (same coil voltage configuration)
- Earlier 8903 series electrically held contactors with equivalent pole/contact ratings
Works With
- Standard control relay and timer circuits
- Programmable logic controllers (PLCs) via control coil interface
- Building management systems (BMS) with relay output modules
- Photocell and daylight harvesting control devices
- Occupancy sensor networks
