Overview
The Westinghouse BQ230240 (manufactured by Eaton/Cutler-Hammer) is a space-saving quadplex circuit breaker engineered for commercial and industrial electrical panels. By integrating two 30A and two 40A independent circuits into a single plug-on breaker, the BQ230240 allows system expansion without requiring a larger electrical box. This thermal-magnetic breaker delivers reliable short-circuit and overload protection while optimizing panel real estate.
Key Features
- Quadplex design with independent trip circuits—two 30A and two 40A poles
- Plug-on mounting compatible with BR, Bryant, Challenger, and Westinghouse load centers
- Thermal-magnetic protection with 10 kAIC rating at 120/240V
- CTL rejection tab for enhanced safety and compatibility assurance
- Occupies two standard 1-inch panel spaces
- Feed-Thru connection for straightforward installation
Technical Specifications
- Part Number: BQ230240
- Voltage Rating: 120/240 VAC
- Amperage: 30A (outside poles) / 40A (center poles—independent trip)
- Poles: 2-pole configuration
- Phase: Single phase
- Connection Type: Feed-Thru (Plug-on)
- Protection Type: Thermal-Magnetic
- Trip Characteristic: Long-Time and Instantaneous
- Interrupt Capacity (AIC): 10 kA @ 240V
- Wire Size: Minimum 14 AWG (Cu/Al), Maximum 4 AWG (Cu/Al)
- Certification: UL 489, Federal Specifications W-C375
- Materials: ABS/plastic and aluminum
- Contact Configuration: Double Pole Single Throw (DPST)
Typical Applications
The Westinghouse BQ230240 quadplex breaker is ideal for:
- Residential to light commercial panel upgrades requiring space optimization
- Industrial control systems needing multiple independent circuit branches
- Equipment retrofits where panel space is at a premium
- Branch circuit protection in multi-load industrial environments
- HVAC, lighting, and machinery motor control circuits
Compatibility & Replacements
Compatible With
- Eaton BR load centers
- Bryant load centers
- Challenger load centers
- Westinghouse load centers
- Panels with Type BR acceptance
Replaces / Drop-In Replacement For
The BQ230240 is the standard quadplex unit in the BQ series and is commonly referenced interchangeably across Eaton, Cutler-Hammer, Bryant, Challenger, and Westinghouse product lines. Verify compatibility with your specific load center before ordering.
Works With
- Thermal-magnetic protection systems
- UL 489-compliant panelboards
- Standard 120/240V single-phase distribution systems
- Industrial and commercial electrical installations
