Eaton QC1100 - 100 A, 120 V, 1-Pole Circuit Breaker | AmpState

Discover dependable branch circuit protection with the Eaton QC1100 — a compact, 100 A, 120 V, 1-pole molded case circuit breaker designed to safeguard panelboards and loadcenters. Built for reliable performance in residential, commercial, and light industrial settings, this breaker delivers precise protection where you need it most.

Key advantages at a glance

• Space-efficient molded-case design maximizes panel real estate, helping you fit more circuits in tight load centers without sacrificing safety.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining a thermal element for gradual overloads with a magnetic element for fast short-circuit response.
• 1-pole, 100 A, 120 V configuration is ideal for protecting single-phase branch circuits common in homes and small commercial spaces.
• OEM-compatible designed to work with matching OEM load centers and panelboards, ensuring straightforward installation and reliable performance.

Where it fits and how it helps

The QC1100 is purpose-built for branch circuit overcurrent and short-circuit protection. Use it to safeguard individual circuits in panelboards and loadcenters, from lighting and receptacle runs to dedicated equipment feeders. Its compact form and precise trip characteristics reduce nuisance trips while maintaining safety.

Why this model stands out

• Concrete protection you can trust — the thermal-magnetic mechanism delivers predictable responses under varying temperatures and loads, so circuits stay protected under typical operating conditions.
• Efficient panel utilization — its small footprint means you can optimize space in installations with multiple circuits or tighter enclosures.
• Versatile application range — suitable for residential panels, commercial electrical rooms, and light industrial installations that require reliable 100 A protection at 120 V.

Specifications at a glance

• Manufacturer: Eaton
• Part Number: QC1100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 120 V
• Number of Poles: 1
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Residential subpanels needing reliable protection for high-draw circuits such as workshop tools or HVAC components.
• Commercial lighting and receptacle circuits where space-efficient breakers help maximize panel capacity.
• Light industrial applications requiring robust protection for single-phase, 120 V circuits within OEM-compatible panel systems.

Installation and compatibility notes

Pair the Eaton QC1100 with matching OEM load centers and panelboards to ensure seamless fit and performance. Before installation, verify that the panel is designed for molded-case, 1-pole breakers of this rating and follow standard electrical safety practices. This unit is designed to provide dependable protection for your 120 V single-phase circuits, with the confidence that comes from Eaton’s engineering lineage.