Siemens QE120 - 20 A, 120 V, 1-Pole Plug-In Circuit Breaker | AmpState

The Siemens QE120 is a 20A, 120V, 1-pole plug-in molded case circuit breaker designed to protect branch circuits in panelboards and load centers. Built for dependable overcurrent and short-circuit protection, it delivers quick installation and reliable performance across a range of settings—from residential panels to light commercial applications.

• Fast plug-in connection for quick installation and effortless replacement in compatible panelboards and load centers.
• Thermal-magnetic trip unit provides stable, repeatable protection against both overloads and short circuits, helping prevent nuisance trips and equipment damage.
• 20A, 120V, 1-pole design precisely protects a single branch circuit, making it ideal for lighting, outlets, and other common loads in homes and small workplaces.
• OEM-panel compatibility ensures a reliable fit with matching Siemens panelboards and load centers, simplifying upgrades and maintenance without adapters or modifications.
• Plug-in molded case construction combines a compact footprint with durable performance for everyday electrical protection.

Why it matters: when a circuit is overloaded or experiences a short, the QE120 promptly interrupts current to minimize damage and reduce safety risks. Its thermal-magnetic technology delivers predictable trip behavior, so you can trust it to protect connected equipment, electronics, and occupants.

• residential service panels, apartment or condo load centers, retail or small-office electrical rooms, and light industrial panels needing dependable single-pole protection.
• replacing a failed 20A breaker in an existing Siemens panel, upgrading a panelboard for added circuit capacity, or maintaining a clean, standardized protection scheme across multiple circuits.

Technical specifications at a glance

• Amperage Rating: 20A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection
• Manufacturer: Siemens
• Part Number: QE120

For projects requiring reliable, straightforward protection that aligns with Siemens panel systems, the QE120 20A 120V 1-pole plug-in breaker offers a practical, proven solution. Install it in compatible panels to safeguard circuits, improve reliability, and streamline maintenance—today and for years to come.