Overview
The Square D QO110 is a 10 amp, single-pole QO miniature circuit breaker for compatible Square D QO load centers, NQ and NQOD panelboards, OEM mounting bases, and Speed-D switchboard distribution panels. It provides standard thermal-magnetic overload and short-circuit protection with plug-in mounting, Visi-Trip indication, a 120/240 V AC rating, and 10 kA interrupting capacity.
Key Features
-
Protection: Thermal-magnetic operation provides instantaneous and time-delayed protection against short circuits and sustained overloads.
-
Diagnostics: Square D Visi-Trip indication makes a tripped breaker easier to identify in a populated panel.
-
Installation: The compact 0.75-inch, one-space plug-in design fits manufacturer-approved QO distribution equipment.
-
Connections: Pressure-plate terminals accept 14–8 AWG copper or aluminum conductors.
-
Compliance: UL Listed, CSA Certified, and HACR rated for manufacturer-specified applications.
Specifications
-
Manufacturer: Square D by Schneider Electric
-
Model: QO110
-
Series: QO
-
Current rating: 10 A
-
Poles: 1
-
Voltage: 120/240 V AC
-
Interrupting rating: 10 kA
-
Mounting: Plug-in
-
Terminal: Pressure plate
-
Wire range: 14–8 AWG copper or aluminum
-
Operating temperature rating: 104°F (40°C)
Common Applications
- Low-current branch circuits in compatible Square D QO load centers.
- Control, signaling, lighting, or equipment circuits requiring 10 A single-pole protection.
- Residential and light-commercial distribution equipment specifically listed for QO plug-in breakers.
- Like-for-like replacement where the panel labeling and application permit the Square D QO110.
