QSFT1053B w/ Mounting Kit - 100Amp Panel Switch

QSFT1053B w/ Mounting Kit - 100Amp Panel Switch

The Zinsco QSF1053B Panel Switch is a solid, work-ready solution for commercial and industrial electrical systems that demand reliable overcurrent protection and consistent power control. Rated for 100 amps and 600 volts across three phases, this fusible panelboard switch includes a mounting kit for faster, cleaner installation—no need to hunt down extra parts. Whether you’re doing a replacement or working on a new project, it’s a practical, professional-grade component built for daily use in demanding setups.

Key Features and Benefits

• Fusible Twin Unit Design – Helps protect your system from overloads by cutting off dangerous current levels quickly and safely.
• Class RK1 & RK5 Fuse Support – Works with both types, offering more options when it comes to system design or fuse replacements.
• Quick Bolt-In Mounting – Comes with a pre-matched kit that simplifies installation and secures the switch right where you need it.

Technical Specifications

• Current Rating: 100 Amps
• Voltage Rating: 600 Volts A.C.
• System Type: Three-Phase
• Interrupt Rating: 200,000 AIC
• Pole Configuration: 3-Pole
• Fuse Compatibility: Class RK1 & RK5
• Product Size: 26.5″ W x 7.0″ H x 6.5″ D

Material Quality and Certifications

• Crafted from dependable, high-durability materials that meet industry safety requirements. This panel switch holds up well under continuous use and maintains performance without compromise. It’s manufactured to support both safety and reliability standards, ensuring it's a trusted component for your electrical system.

Where It Works Best

• The QSF1053B is a smart fit for high-load systems where reliable operation matters—think commercial buildings, plants, electrical service rooms, and more. It's particularly helpful when replacing older units in Zinsco panelboards or when upgrading to meet modern load demands without major system overhauls.