QSFT353B - 30A, 600V, 3-Pole, Fusible, Switch

The QSFT353B is a rugged, fusible switch engineered for dependable on/off isolation combined with built-in overcurrent protection. With a 30A rating at 600V and a 3-pole configuration, this switch delivers confident three-phase disconnects in demanding industrial and commercial environments while keeping maintenance straightforward and accessible.

Key benefits

• Three-pole isolation: Ensures clean, simultaneous disconnect of all phases for safe maintenance and clear de-energization.
• Integrated fusible protection: Provides immediate overcurrent protection within the switch assembly, reducing the need for separate protective devices and simplifying panel layouts.
• Compact, dependable design: Built to withstand tough operation conditions typical in factories, workshops, and processing facilities while remaining easy to service.
• Versatile installation use: Ideal for motor disconnects, panelboards, and branch circuit protection where a compact, maintainable solution is required.

Why choose a fusible switch like the QSFT353B

Unlike non-fused disconnects, the QSFT353B adds a protective element directly in the switch path, helping to limit fault currents and protect downstream equipment. Its robust construction is intended to endure industrial vibrations, temperature variations, and regular operator use, delivering reliable performance when it matters most. The 30A, 600V rating covers a wide range of 3-phase loads, making it a practical choice for moderate power distribution and machinery control where space and serviceability are at a premium.

Ideal use cases

• Motor disconnects on manufacturing lines or processing equipment
• Main or feeder disconnects in panelboards for quick de-energization during maintenance
• Branch circuit protection where a fused switch simplifies protection strategy and wiring layouts

What this means for your operation

• Faster, safer maintenance with a clearly defined isolation point for each three-phase circuit
• Simplified protection strategy by integrating fuse-based overcurrent protection directly in the disconnect
• Space-efficient solution that fits tighter panels and equipment cabinets without compromising performance

Specifications at a glance

• Model: QSFT353B
• Amperage: 30A
• Voltage: 600V
• Poles: 3-Pole
• Fusible: Yes (fusible switch)

Installation and maintenance insights

Plan for straightforward serviceability by organizing fuse replacements and ensuring compatible fuse elements are accessible within the switch assembly. The QSFT353B is designed to integrate cleanly into motor control centers, distribution panels, or standalone disconnect panels, supporting reliable isolation in everyday operation and during scheduled maintenance windows.