QSFT333B - 30Amp Panel Switch

QSFT333B - 30Amp Panel Switch

The Zinsco QSFT333B is a twin panelboard switch rated for 30 amps and 250 volts AC. It’s built to control two circuits separately and works well in residential, commercial, or light industrial electrical panels. This type of switch is a solid option when you need something that fits Zinsco systems and still gives you dependable performance. It installs with a bolt-in mount and takes Class RK1 or RK5 fuses, which gives you some flexibility depending on the setup. Whether you’re keeping an older panel going or setting up something new, this unit gives you straightforward, reliable control over your circuits.

Key Features and Benefits

• Controls two circuits in one unit: Enables separate management of dual circuits in compact form.
• Bolt-in style for secure panel fit: Provides stable and secure mounting within compatible panelboards.
• Works with Class RK1 and RK5 fuses: Offers fuse flexibility for varied protection needs.
• Great for updating or maintaining Zinsco-based panels: Ideal for keeping legacy systems operational with modern reliability.
  

Technical Specifications

• Voltage: 250 VAC
  
• Amperage: 30 A
  
• Poles: 3
  
• Dimensions:
  • Width: 21 inches
  • Height: 5.5 inches
  • Depth: 5 inches
• Type: QSF-T
  

Material Compliance and Certifications

• Safety Standards: Meets general safety expectations for electrical panel components.
• Build Quality: Made from durable materials suited for standard operating conditions.
  

Where It Works Best

• Good fit for homes, buildings, or light-duty industrial spaces using Zinsco panelboards. Helpful for projects that need reliable circuit control in a small space, especially when keeping older systems running.