PT333 - 100A, 277V, 3-Pole, Disconnect Switch

PT333 - 100A, 277V, 3-Pole, Disconnect Switch is a rugged solution designed to deliver reliable on/off isolation and overcurrent protection in demanding industrial and commercial environments. Its 3-Pole configuration ensures complete phase separation, so when you switch off, every line in a three-phase circuit is safely disconnected for maintenance and protection.

Key specifications:

• Model: PT333
• Amperage: 100A
• Voltage: 277V
• Poles: 3-Pole

Why this disconnect switch stands out

• Complete three-phase isolation—the 3-Pole design ensures every conductor is disconnected, reducing risk during servicing of motors and other three-phase equipment.
• Compact, maintenance-friendly design—built for tight panel spaces and straightforward servicing in busy industrial and commercial settings.
• Integrated protection—the fusible switch concept supports reliable overcurrent protection while keeping maintenance practical and predictable.
• Durable construction for harsh environments—engineered to endure the demands of demanding installations where reliability matters most.
• Versatile deployment—well-suited for motor disconnects, panelboards, and branch-circuit protection wherever a compact, easy-to-service solution is needed.

Ideal use scenarios

• Motor disconnects on three-phase equipment such as pumps, compressors, conveyors, and other industrial machinery
• Main or branch protection within panelboards and distribution sections of commercial facilities
• Dedicated disconnect points for critical circuits in HVAC systems, manufacturing lines, and process equipment

Practical outcomes you can expect

• Faster, safer maintenance through reliable isolation of all phases
• Improved protection for motors and connected loads against overloads and short circuits
• Space-efficient integration that simplifies retrofits and new installations alike

Maintenance and best practices

• Follow manufacturer guidelines for servicing fusible switch systems
• Label PT333's position clearly within your protection scheme to aid quick identification during servicing
• Schedule periodic inspections of connections and actuation to ensure consistent isolation and protection

The PT333 - 100A, 277V, 3-Pole, Disconnect Switch brings a focused, purpose-built solution to your electrical distribution needs, delivering dependable isolation and targeted overcurrent protection where reliability and space efficiency matter most.