Sylvania QMBFP7036 – 800A, 600V, 3-Pole Fusible Disconnect Switch – 200kAIC

The Sylvania QMBFP7036 is a high-capacity, 3-pole fusible disconnect switch engineered for demanding industrial and commercial electrical distribution. Built from the rugged QMBF series framework, this unit delivers dependable overload and short-circuit protection for large loads, helping you keep critical power systems safe and available.

Designed to handle substantial feeders, the QMBFP7036 is rated for 800 A at 600 V AC, making it an ideal main disconnect or feeder protection device in switchboards, panelboards, and heavy-duty distribution systems. Its 200 kA interrupting capacity (AIC) at 600 V ensures rapid fault interruption, minimizing damage to conductors, equipment, and downstream circuitry during high-energy faults.

Why the QMBFP7036 stands out

• 3-pole fusible disconnect provides comprehensive phase isolation with integrated fuse protection, enabling precise coordination and safer maintenance shutdowns.
• Direct-fit compatibility with QMBF panelboards and switchgear simplifies installation, upgrades, or retrofits by matching existing hardware footprints and mounting layouts.
• Industrial-grade construction from Sylvania/CEB delivers long service life in harsh environments, with a heavy-duty enclosure designed to endure vibration, dust, and temperature swings common in industrial plants.
• Fuse-based protection uses industry-standard fuse classes, offering flexible, selective protection that can be tailored to the exact fault currents and coordination strategy of your system.
• Clear isolation and protection in one compact device helps plant engineers reduce part counts, streamline maintenance, and improve overall reliability of power distribution.

Key specifications at a glance

• Brand/Manufacturer: Sylvania / CEB
• Series: QMBF
• Part Number: QMBFP7036
• Poles: 3
• Amp Rating: 800 A
• Voltage Rating: 600 V AC
• Interrupting Capacity (AIC): 200 kA @ 600 V
• Construction: Heavy-duty enclosure, industrial-grade materials
• Compatibility: Direct-fit with QMBF panelboards and switchgear

Ideal use cases

• Main service disconnects for large commercial facilities, factories, and data centers where high fault currents are possible.
• Feeder protection in industrial distribution systems feeding motor fleets, presses, conveyors, or HVAC systems.
• Retrofits or upgrades within existing QMBF-based switchgear and panelboard configurations to improve protection and isolation capabilities.
• Situations requiring rapid interruption of faults while maintaining selective coordination with upstream protection devices.

Installation, safety, and compatibility

The QMBFP7036 is built for straightforward integration into existing QMBF ecosystems. Its 3-pole design ensures simultaneous isolation of all phases, reducing arc flash risk during maintenance. When wiring, follow standard practices for fusible disconnects, ensuring correct fuse class selection to achieve the desired protection level and coordination with upstream devices. The rugged enclosure is designed to stand up to industrial environments, supporting reliable operation over the life of the installation.

Practical guidance and tips

• Choose fuse classes that align with your system protection strategy to achieve selective coordination and minimize nuisance interruptions.
• Verify compatibility with current QMBF panelboards and switchgear before replacement or upgrade to ensure a seamless fit and mounting alignment.
• Document fault-interruption ratings and maintain clear labeling on the device to aid maintenance crews and ensure quick troubleshooting.
• In facilities with high short-circuit energy, pair the QMBFP7036 with appropriate upstream protection settings to maximize safety and reduce equipment stress during faults.
• Schedule periodic inspections of the fusible elements and enclosure seals to preserve protection integrity and environmental resilience.

The smart choice for robust, reliable power distribution

For engineers and electricians building or upgrading industrial power systems, the Sylvania QMBFP7036 delivers a balance of capacity, protection, and compatibility that few fusible disconnects match. With an 800 A, 600 V rating, 200 kAIC fault interruption capability, and direct-fit integration with QMBF panelboards and switchgear, it provides a dependable backbone for demanding electrical distributions. If you’re designing or modernizing a facility where uptime and protection are non-negotiable, this fusible disconnect switch is engineered to keep power flowing safely under load and to shut down cleanly when faults occur.