QBGFT1040 - 40 Amp, GFCI (5mA) Circuit Breaker

QBGFT1040 - 40 Amp, GFCI (5mA) Circuit Breaker

If you’re working on a panel and need reliable ground fault protection, the Eaton QBGFT1040 gets the job done without any guesswork. It’s a 40 amp, single-pole GFCI breaker designed for 120/240V systems, and it trips at 5 mA—right where you want it for protecting people from shock in areas where moisture is a concern. What makes this one stand out in day-to-day use is the bolt-on connection. It sits tight in the panel, which is something you’ll appreciate if you’ve ever dealt with breakers that don’t feel as secure as they should. Once it’s in, it stays put. It’s also UL listed, so you’re covered from a code and safety standpoint. This is the kind of breaker you install and don’t have to think about again. It just does its job in the background.

Key Features and Benefits

• 5 mA trip sensitivity for reliable ground fault protection
• 40 amp rating for higher-load circuits
• Bolt-on mounting for a solid, secure fit
• Single-pole design for dedicated circuit protection
• 10 kAIC rating to safely interrupt fault conditions
• Straightforward, dependable performance

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: QBGFT1040
  
• Type: GFCI Circuit Breaker
  
• Amperage: 40A
  
• Voltage: 120/240V
  
• Poles: 1
  
• Interrupt Rating: 10 kAIC
  
• Trip Sensitivity: 5 mA
  
• Mounting: Bolt-On
  
• Wire Size: #8 Copper / #8–6 Aluminum
  
• Dimensions: 1" x 1" x 1"
  
• Weight: 0.5 lb
  

Material Compliance and Certifications

• UL 489 Listed for safety and performance
• Suitable for installations requiring GFCI protection per code

Where It Works Best

• Kitchens, bathrooms, and laundry rooms
• Circuits near water or damp areas
• Residential panel upgrades or replacements
• Light commercial applications