QMQB6636B - 60Amp Panelboard Switch

QMQB6636B - 60Amp Panelboard Switch

Federal Pacific designed the QMQB6636B panelboard switch for reliable control in three-phase electrical systems. This 60 amp, 600 volt fusible switch bolts directly into compatible panelboards, allowing installers to complete replacements or upgrades without altering the panel layout. The twin-unit fusible design accepts Class RK1 or RK5 fuses, giving electricians control over the level of overcurrent protection needed for the circuit. Once installed, the switch delivers consistent on-off operation for indoor commercial and light industrial applications.

Key Features and Benefits

• Supports three-phase power: Three-pole configuration for balanced load control.
• Electrical Rating: Handles up to 60 amps at 600 volts AC.
• Bolt-In Design: Installs directly into compatible panelboards without altering layout.
• Fuse Compatibility: Accepts Class RK1 and RK5 fuses for circuit protection.
• Indoor Rated Enclosure: Uses a NEMA 1 enclosure suitable for indoor locations.

Technical Specifications

• Voltage Rating: 600V AC
• Current Rating: 60 Amps
• Poles: 3
• Phase: Three-phase
• Fuse Compatibility: Class RK1 and RK5
• Enclosure Type: NEMA 1
• Switch Configuration: QMQB fusible twin-unit, bolt-in panelboard switch

Material Compliance and Certifications

• UL Listing: The QMQB6636B carries a UL 98 listing under file number E466967.
• Code Compliance: Complies with applicable UL, NEMA, and NEC requirements, helping contractors meet inspection and code expectations.

Where It Works Best

• Electricians commonly use this panelboard switch in commercial buildings, indoor electrical rooms, and light industrial facilities that operate on three-phase power. The switch fits well in panelboard upgrades, service replacements, and new installations where a fusible disconnect is required inside the panel.