QMQB4036B - 400Amp Panelboard Switch

QMQB4036B - 400Amp Panelboard Switch

The QMQB4036B panelboard switch is built for applications where consistent power control is non-negotiable. Designed as a fusible, bolt-in switch, it’s commonly used in commercial and industrial electrical systems that carry heavy loads and need dependable protection. With a 600-volt AC rating and a 400-amp capacity, this switch is suited for demanding environments without being oversized or complicated. It fits cleanly into compatible panelboards and gives electricians a straightforward, practical solution when reliability and safety are the priority.

Key Features and Benefits

• 400 Amp Capacity: Handles higher current loads used in commercial and industrial settings
• Fusible Design: Supports Class RK1 and RK5 fuses for flexible overcurrent protection
• Bolt-In Mounting: Provides a solid, stable connection inside the panelboard
• Indoor Rated: NEMA 1 construction for use in controlled indoor locations
• Compact Footprint: Designed to work well in panels where space matters

Technical Specifications

• Type: Bolt-in panelboard switch
• Voltage Rating: 600V AC
• Current Rating: 400 Amps
• Poles: 3
• Phase: 3-Phase
• Compatible Fuses: Class RK1 and RK5
• Dimensions:
  • 22.25" W
  • 13.75" H
  • 6.25" D

Material Compliance and Certifications

• UL 98 Compliance: This panelboard switch is built to meet UL 98 requirements for safety and performance. Materials are selected to hold up under regular use in electrical distribution systems, helping ensure dependable operation over time and compliance with established industry standards.

Where It Works Best

• The QMQB4036B is a good fit for industrial facilities, commercial buildings, and electrical rooms that require a high-amp panelboard switch with fusible protection. It’s commonly used where steady power distribution is needed for equipment, lighting, or system feeds, and where installers want a clean bolt-in solution that doesn’t waste space.