Overview
The Cutler Hammer CHQ115 /K circuit breaker is an Eaton-manufactured, single-pole thermal-magnetic breaker designed for residential and light commercial load centers. This 15-amp, 120/240V unit delivers reliable overcurrent protection with a 10 kA interrupting rating and plug-on mounting configuration for quick installation.
Key Features
- Thermal-Magnetic Trip: Fixed thermal-magnetic protection with long-time and instantaneous trip functions for dependable overcurrent detection
- Plug-On Mount: Quick-connect design for simple installation into compatible load centers
- High Interrupting Capacity: 10 kA AIC rating ensures safe operation in residential and light commercial settings
- Compact Design: Single 3/4-inch wide pole footprint reduces panel space requirements
- Wire Compatibility: Accepts 14–8 AWG solid or stranded copper/aluminum conductors for flexible installation
Technical Specifications
- Manufacturer: Eaton (Cutler-Hammer)
- Part Number: CHQ115 /K
- Poles: 1
- Amperage Rating: 15 A
- Voltage Rating: 120/240 VAC
- Frequency: 50/60 Hz
- Trip Type: Thermal-Magnetic
- Interrupting Rating (AIC): 10 kA
- Mounting: Plug-On (Molded Case)
- Wire Range: 14–8 AWG
- Operating Temperature: 60–75°C ambient
- Certifications: UL Listed, CSA Certified
- Width: 3/4 inch per pole
- Warranty: 15-year manufacturer warranty
- Quantity in Box: 4 breakers
Typical Applications
The CHQ115 /K is suited for branch circuit protection in residential and light commercial installations, including:
- Fixed lighting circuits and switched receptacles
- Wall outlet branch circuits (15-amp capacity)
- Fractional-horsepower motor circuits (1/4–1/2 hp)
- Furnace, attic fan, and garbage disposal circuits
- Standard household electrical loads up to 1,800 watts
Compatibility & Replacements
Compatible With
- Cutler-Hammer CH-series and CHQ-series load centers
- Square D Type QO UL-listed loadcenters (direct replacement)
- Residential and light commercial electrical panels rated for plug-on breakers
- 120/240V single-phase distribution systems
Replaces / Drop-In Replacement For
- CHQ115 (standard version without /K designation)
- Square D QO115 1-pole 15-amp breaker
- Eaton/Cutler-Hammer CH115 (plug-in CH-series equivalent)
- Verify compatibility with your specific load center before ordering to ensure proper fit
Works With
- Cutler-Hammer residential and commercial panel boards
- Square D Type QO load center compatibility (UL-listed direct replacement)
- Standard 120/240V single-phase electrical systems
- HACR-rated and SWD-rated applications (as applicable)
