QMQB4032R w/ Mounting Kit - 400Amp Panelboard Switch

QMQB4032R w/ Mounting Kit - 400Amp Panelboard Switch

The QMQB4032R is a 400 amp, 3-pole fusible panelboard switch used in commercial and industrial electrical systems where dependable power control is needed. It’s rated for 250 volts AC and is typically installed inside a panelboard to provide a main or branch disconnect with fuse protection. The bolt-in design helps it seat firmly in the panel, and the included mounting kit saves time during installation. This is the kind of switch electricians rely on for day-to-day power distribution work without unnecessary complexity.

Key Features and Benefits

• Fusible Switch Design
  Accepts Class RK1 and RK5 fuses, making it easy to match the protection level to the job.
• Bolt-In Panelboard Mounting
  Designed to install directly into compatible panelboards for a solid, secure fit.
• NEMA 1 Indoor Rating
  Intended for indoor locations where basic protection from dust and accidental contact is required.
• Mounting Hardware Included
  Comes with the needed mounting components to help speed up installation.
• Three-Pole Configuration
  Supports three-phase systems commonly found in commercial and industrial buildings.

Technical Specifications

• Amp Rating: 400 Amps
• Voltage: 250 Volts AC
• Poles: 3
• Compatible Fuse Classes: RK1, RK5
• Mounting Style: Bolt-in panel mount
• Enclosure Rating: NEMA 1
• Dimensions: 22.25" W × 13.75" H × 6.25" D

Material Compliance and Certifications

The QMQB4032R is built to meet applicable electrical safety and performance standards. When installed according to code, it is designed to provide reliable operation in standard panelboard applications.

Where It Works Best

This panelboard switch is commonly used in commercial buildings, warehouses, manufacturing areas, and similar environments. It’s a good fit for systems that need a fusible disconnect for maintenance, servicing, or equipment protection. Its straightforward design makes it suitable for both new installations and replacement work inside existing panelboards.