8903SMO3V02 - Square D Lighting Contactor

8903SMO3V02 - Square D Lighting Contactor

If you're dealing with lighting control and just want something that works without constant attention, the 8903SMO3V02 gets the job done. It’s a straightforward, electrically held lighting contactor built for everyday commercial and industrial use—nothing flashy, just reliable switching where you need it.

With a 30-amp rating and four normally open poles, it gives you enough capacity to handle multiple lighting circuits without juggling extra components. The included 110/120V AC coil (50/60 Hz) is standard for most setups, so chances are it’ll drop right into your existing system without a hassle.

One thing that makes this unit practical in the real world: it’s easy to service. If something wears out, you’re not replacing the whole contactor—the coil and contacts can be swapped out quickly. That matters when downtime costs money or creates headaches you don’t need.

It’s also compact, which helps when panel space is tight (and it usually is). Since it’s an open-style contactor, you’ve got flexibility to mount it in whatever enclosure fits your application best.

Key Features and Benefits

• Electrically held design for consistent, uninterrupted operation
• 30A rating suited for common lighting loads
• 4-pole setup with normally open contacts
• Standard 110/120V AC coil (50/60 Hz)
• Coil is interchangeable if your voltage needs change
• Replaceable parts help extend product life
• Compact size makes installation easier in crowded panels
• Open design allows flexibility with enclosures
• Lug connections for solid, dependable wiring

Technical Specifications

• Catalog Number: 8903SMO3V02
  
• Type: Electrically Held Lighting Contactor
  
• Amperage: 30A
  
• Poles: 4 (NO contacts)
  
• Control Voltage: 110/120 VAC, 50/60 Hz
  
• Connections: Lugs
  
• Dimensions:
  • Height: 3.5 in
  • Width: 4.3 in
  • Depth: 4.2 in
• Enclosure: Open type (no enclosure included)
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL Listed
• CSA Certified
• TAA Compliant
• 18-month warranty
• These certifications matter more than most people admit—they’re what give you confidence the component will perform safely and consistently over time, especially in critical lighting systems .

Where It Works Best

• You’ll typically see this used in:
• Office and retail lighting systems
• Warehouses and light industrial setups
• Parking lot and exterior lighting control
• Schools, hospitals, and public facilities
• Basic energy management systems