QMB367W - 800Amp Panelboard Switch

QMB367W - 800Amp Panelboard Switch

When you’re working with high-capacity electrical systems, dependable power distribution is critical. The Square D QMB367W fusible switch unit is designed to handle demanding commercial and industrial applications where safe disconnecting and reliable overcurrent protection are part of daily operation. Rated for 800 amps and up to 600VAC, this 3-pole fusible switch unit is built for use with QMB panelboards and is commonly found in manufacturing facilities, distribution centers, large commercial buildings, and utility systems.

The QMB367W accepts Type T fuses and supports both AC and DC applications, giving electricians and facility teams flexibility across different system requirements. Its compact 15-inch design helps maximize panel space while still allowing easy access for servicing and maintenance. Whether it’s protecting feeder circuits, service entrances, or large motor loads, this switch unit is built to provide consistent performance in tough electrical environments.

Key Features and Benefits

• 800 amp fusible switch unit for QMB panelboards
• 3-pole design for commercial and industrial power distribution
• Rated for up to 600VAC operation
• Compatible with Type T fuses
• Suitable for AC and DC electrical systems
• Compact 15-inch design helps save panel space
• Provides dependable circuit isolation and overcurrent protection
• Built for demanding high-power applications
  

Technical Specifications

• Manufacturer: Square D by Schneider Electric
  
• Catalog Number: QMB367W
  
• Product Type: Fuse-Switch Disconnector
  
• Number of Poles: 3
  
• Rated Operational Voltage: 600 VAC
  
• Current Rating: 800 Amps
  
• Fuse Type: T
  
• Number of Modules: 1
  
• Height: 15 in. (381 mm)
  
• Weight: 100 lbs. (45.359 kg)
  

Material Compliance and Certifications

• UL Listed
• CSA Certified
• NEMA KS1 Compliant
• cULus Marked
  

Where It Works Best

• Commercial power distribution systems
• Industrial manufacturing facilities
• Service entrance equipment
• Utility and infrastructure applications
• Distribution centers and warehouses
• HVAC and motor control systems
• Electrical retrofits and panel upgrades