QCGFT2040 - 40 Amp, GFCI (5mA) Circuit Breaker

QCGFT2040 - 40 Amp, GFCI (5mA) Circuit Breaker

The Eaton QCGFT2040 is the kind of circuit breaker you install when safety isn’t optional. Built for commercial and industrial use, this 40 amp, 2-pole GFCI breaker helps protect people and equipment from ground faults that can otherwise go unnoticed until it’s too late. It’s designed to monitor itself as well, thanks to a built-in self-test feature that regularly checks if the protection is still working as it should. On top of that, you’re getting dependable thermal-magnetic protection, so the breaker reacts appropriately to both overloads and short circuits. It’s not overly complicated either—Eaton’s Quicklag (QC) design keeps installation straightforward for anyone familiar with compatible panelboards. With a 120/240V rating and a 10 kAIC interrupt capacity, it’s a solid fit for systems that need consistent, no-nonsense protection without second-guessing performance.

Key Features and Benefits

• Built-in GFCI Protection with Self-Test: Regularly checks itself to make sure protection is active and reliable
• 40 Amp, Two-Pole Breaker: Handles larger circuits that require dual-phase protection
• Thermal-Magnetic Operation: Responds to both overloads and short circuits
• Quicklag (QC) Mounting: Designed for easy installation in compatible Eaton panels
• 10 kAIC Rating: Suitable for interrupting higher fault currents safely
• Accepts #14–4 AWG Wire: Works with a range of common wiring sizes

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: QCGFT2040
  
• Product Type: GFCI Circuit Breaker
  
• Poles: 2-Pole
  
• Amperage Rating: 40 Amps
  
• Voltage Rating: 120/240 Volts
  
• Interrupt Rating: 10 kAIC
  
• Breaker Type: QC (Quicklag)
  
• Trip Type: Thermal-Magnetic
  
• Wire Size Range: #14–4 AWG
  
• Dimensions: 5.7 in (L) x 3.5 in (W) x 2.25 in (H)
  
• Weight: 0.8 lb
  

Material Compliance and Certifications

• UL 943 Listed: Meets safety requirements for GFCI protection
• UL 489 Certified: Complies with standards for molded case circuit breakers
• Built to align with recognized electrical safety standards, supporting reliable performance in applications where protection is critical

Where It Works Best

• Commercial buildings where GFCI protection is required
• Industrial environments with higher electrical demand
• Apartment buildings and multi-unit housing
• Kitchens, shops, or work areas where moisture is present
• Mechanical rooms and utility spaces
• Replacing or upgrading breakers in Eaton QC panelboards