QMQB3336B - 30Amp Panelboard Switch

QMQB3336B - 30Amp Panelboard Switch

The Federal Pacific QMQB3336B is a 30 amp, 3-pole panelboard switch used in many commercial and industrial electrical systems. It’s rated for 600 volts AC and is designed to mount directly into compatible panelboards using a bolt-in connection. Installers often choose this model when they want a straightforward replacement or a clean fit without modifying the panel.

This switch accepts several common fuse types, which makes it easier to match the protection to the circuit. The dual/twin design can also be helpful when working with tighter panel layouts. It carries a NEMA 1 rating, so it’s intended for indoor locations such as electrical rooms or protected equipment areas.

Key Features and Benefits

• Designed for 600V AC, 3-phase applications
• 30 amp rating for standard panelboard circuits
• Bolt-in mounting for direct installation
• Accepts multiple fuse classes for flexibility
• Intended for indoor use

Technical Specifications

• Voltage Rating: 600V AC
• Current Rating: 30 Amps
• Poles: 3
• Phase: 3-Phase
• Fuse Classes: RK1, RK5, H, K, J, R
• Configuration: Dual / Twin Fusible Unit
• Approximate Size: 21.00" W x 5.50" H x 5.00" D
• Mounting: Bolt-In
• Enclosure Type: NEMA 1

Material Compliance and Certifications

• UL-98 Listed
• UL File Number: E466967

Where It Works Best

• The QMQB3336B is commonly used in indoor commercial and industrial panelboards where dependable circuit control is required. It’s a good fit for electrical rooms, equipment panels, and general power distribution systems. This switch is often selected for maintenance work or system updates where compatibility, simple installation, and consistent performance matter more than added complexity.