Zinsco QB20 - 20A, 1-Pole, Circuit Breaker

Meet the Zinsco QB20—a compact, dependable 20A, 1-Pole circuit breaker designed to deliver precise overcurrent protection in demanding electrical environments. Built to perform in panelboards, switchboards, and control panels, this breaker keeps critical systems up and running with confidence.

• Current rating: 20A
• Poles: 1-Pole
• Breaker type: Circuit Breaker
• Mounting versatility: suitable for panelboards, switchboards, and control panels
• Application focus: engineered for industrial, commercial, and OEM applications where dependable overcurrent protection and safe operation are essential in distribution panels and motor control centers

The 1‑Pole design of the QB20 offers a lean, space-saving solution for circuits where compact protection is key. It provides straightforward integration in existing panel layouts, helping you optimize panel density without sacrificing safety or reliability.

Ideal use scenarios include:

• Distribution panels in commercial facilities that power lighting and general receptacle circuits
• Motor control centers requiring reliable branch-circuit protection for critical loads
• OEM equipment enclosures where a compact, robust 20A breaker is needed for dependable operation
• New installations and retrofits in panelboards and switchboards where quick, safe protection is essential

Why choose the Zinsco QB20? It delivers a focused combination of size, rating, and reliability tailored for environments where overcurrent protection must act quickly and predictably. With its straightforward 1‑Pole configuration, it enables efficient wiring schemes and dependable interruption of unsafe currents, helping protect both equipment and personnel in industrial, commercial, and OEM settings.