Sylvania QMBF P5036 – 400A, 600V, 3-Pole Fusible Disconnect Switch – 200kAIC

The Sylvania QMBF P5036 is a heavy-duty 3-pole fusible disconnect switch engineered for demanding industrial and commercial power distribution. With a 400A, 600V rating and a robust 200kA interrupting capacity at 600V, it delivers reliable overload and short-circuit protection where fast, decisive fault clearance matters most.

Built to Sylvania / CEB standards, the QMBF P5036 is designed for direct integration with QMBF series panelboards and switchgear. Its rugged, industrial-grade construction is purpose-built to endure harsh environments, delivering long service life and dependable operation in switchboards, panelboards, and distribution assemblies that require a secure disconnect point.

Key advantages

• 400A, 600V rating supports medium-to-large electrical loads common in industrial facilities
• 3-pole fusible design provides secure overcurrent protection and reliable isolation
• 200kA interrupting capacity @ 600V delivers superior fault protection and rapid fault clearance
• Heavy-duty, industrial-grade construction built to withstand demanding environments and long service life
• Direct compatibility with QMBF series panelboards and switchgear ensures a seamless, stockable integration path
• CEB/Sylvania standards compliance offers assurance of quality, safety, and performance

Why this matters for your installation

In facilities where quick, reliable isolation is essential for safety and uptime, the QMBF P5036 provides a definitive disconnect point with substantial fault current handling. The 3-pole design ensures all lines are simultaneously disconnected, reducing the risk of partial energization during maintenance or fault conditions. Its high interrupting capacity at 600V gives you a generous protection margin, helping downstream equipment survive transient faults and reducing downstream damage.

Ideal use cases

• Switchboards requiring a dedicated fusible disconnect for sectionalized power distribution
• Panelboards where a reliable, code-compliant disconnect is needed for safe maintenance and service
• Distribution assemblies in facilities with high electrical demands and stringent protection requirements

Practical considerations and setup tips

To maximize performance and safety, pair this fusible disconnect with appropriately rated fuses and upstream protection devices. Plan protection coordination so that the QMBF P5036 clears faults efficiently without unnecessary disruption to adjacent circuits. Because this switch is part of the QMBF family, it benefits from a consistent interface with QMBF panelboards and switchgear, simplifying installation, stocking, and maintenance.

Specifications at a glance:

• Brand: Sylvania / CEB
• Series: QMBF
• Part number: QMBF P5036
• Type: Fusible disconnect switch
• Pole count: 3
• Amp rating: 400A
• Voltage rating: 600V AC
• Interrupting capacity: 200kA at 600V
• Application: Overload and short-circuit protection in distribution systems
• Construction: Industrial-grade, rugged design for high-demand environments
• Compatibility: Directly fits QMBF series panelboards and switchgear

For facilities seeking a proven, high-capacity fusible disconnect, the Sylvania QMBF P5036 offers a precise combination of reliability, protection, and seamless integration with the QMBF ecosystem—delivering peace of mind across medium-to-large electrical installations.