Square D 8538SBA21VO2 - 30A, 3-Phase, Switch, NEMA 3R

The Square D 8538SBA21VO2 is a compact, rugged 30A 3-phase fusible switch built to deliver reliable on/off isolation and robust overcurrent protection in demanding industrial and commercial environments. Encased in a NEMA 3R enclosure, this switch is designed for outdoor and exposed installations, resisting weather, dust, and moisture while maintaining safe, straightforward operation.

Why this fusible switch stands out

• Accurate, dependable protection—30A, 3-phase switching provides precise control of motor loads and branch circuits with integrated overcurrent protection to reduce wiring complexity and potential fault points.
• NEMA 3R resilience—Outdoor-ready enclosure that withstands rain, dust, and temperature variations, helping equipment stay protected in harsh environments.
• Maintenance-friendly design—engineered for quick, clear disengagement and straightforward servicing, minimizing downtime during inspections or fuse replacements.
• Compact footprint—a space-saving solution for panelboards and crowded electrical rooms without sacrificing performance or safety.

Ideal applications and practical use cases

This switch is purpose-built for motor disconnects, panelboards, and branch circuit protection where a compact, maintainable solution is essential. Use scenarios include outdoor equipment rooms, outdoor motor starters, HVAC pump systems, conveyors, and other industrial processes that require reliable isolation and protection in a single, all-in-one device.

What you gain with the 8538SBA21VO2

• Simplified electrical architecture—integrates switching and protection in one unit, reducing the need for separate disconnects and fuses in tight installations.
• Enhanced safety and serviceability—clear off-position and robust enclosure design help maintain safe work practices during maintenance and inspections.
• Versatile compatibility—suitable for panelboard configurations and branch circuits that require a reliable, maintainable disconnect with 3-phase power.

Technical snapshot

• Model: 8538SBA21VO2
• Amperage: 30 A
• Phase: 3-Phase
• NEMA Rating: 3R

Designed for professionals who value dependable protection, straightforward maintenance, and a compact form factor, the Square D 8538SBA21VO2 is a practical choice for building safe, efficient electrical systems. Ready to streamline motor isolation and branch circuit protection in demanding environments—add this 3R-rated, 30A fusible switch to your setup today.