GFB240 - 40 Amp Circuit Breaker

GFB240 - 40 Amp Circuit Breaker

Upgrade your electrical protection with the Thomas & Betts GFB240—a reliable 40‑amp ground fault personnel protection breaker built for lasting safety in any space. Running smoothly at 120/240 V and rated to interrupt fault currents up to 10 kA, this breaker offers serious peace of mind for both residential and commercial environments. The built-in ground fault circuit interrupter (GFCI) feature helps prevent shocks and electrical fires, delivering a higher level of protection where it counts.

Key Features and Benefits

• Ground-Fault Safety: Quickly detects and shuts off unexpected ground fault currents, reducing the risk of electrical shock in damp or high-risk areas.
• High Fault Current Handling: With a 10 kA interrupting capacity, the GFB240 can safely manage surges without compromising your system’s integrity.
• Sturdy Build Quality: Made with premium materials and backed by a solid 10-year warranty, this device is built to endure.
• Compact Profile: At just 4.5″ long, 2″ high, and 2.75″ wide, it installs neatly in tight panel spaces.
• Flexible Wiring: Compatible with #14–#4 AWG wire sizes, offering easy integration with many system setups.

Technical Specifications

• Brand: Thomas & Betts
• Amperage: 40 Amp
• Voltage: 120/240 Volt
• Trip Type: Ground Fault Interrupter
• Interrupt Rating: 10 kAIC
• Poles: 2‑Pole Breaker
• Wire Size Range: #14–#4 AWG
• Dimensions: 4.5″ × 2″ × 2.75″
• Weight: ~0.7 lb
• Warranty: 10-year

Material Compliance and Certifications

• UL 943: Ground-Fault Circuit Interrupters
• UL 489: Molded-Case Circuit Breakers and Circuit-Breaker Enclosures
• Federal Specification: Meets WC375

Suitability

• Perfect for use in areas requiring advanced electrical safety—think bathrooms, kitchens, outdoor outlets, garages, workshops, and industrial settings. Whether you're upgrading an existing panel or installing in new construction, this breaker delivers reliable ground-fault protection in locations where it matters most.