B120DFHH - 20A Dual Function Circuit Breaker

B120DFHH  - 20A Dual Function Circuit Breaker

If you’re looking for a dependable 20 amp breaker that does more than just handle overloads, the B120DFHH is built to cover multiple layers of protection in one device. This single-pole, bolt-on molded case circuit breaker combines Combination Type AFCI and 5mA GFCI protection, helping guard against arc faults, ground faults, short circuits, and overload conditions. Rated at 65kA interrupting capacity at 120/240VAC, it’s suitable for panels where higher available fault current is a concern.

Because it’s a dual function breaker, you don’t need separate AFCI and GFCI devices. That saves space in the panel and simplifies installation. The bolt-on connection provides a secure attachment to the bus, helping maintain consistent contact over time. Built on the HBFGA2 frame, this breaker is designed for reliable performance in residential and light commercial applications where electrical safety and code compliance are essential.

Key Features and Benefits

• Dual Protection in One Breaker – Combination Type AFCI plus 5mA GFCI protection.
• 20 Amp, Single-Pole Design – Ideal for standard 120V branch circuits.
• 65kA A.I.C. Rating @ 120/240VAC – Suitable for systems with higher available fault current.
• Bolt-On Mounting – Secures directly to the panelboard for a firm electrical connection.
• Molded Case Construction – Designed for consistent, everyday performance.
• Space-Saving Solution – Reduces the need for multiple protective devices in the panel.

Technical Specifications

• Part Number: B120DFHH
  
• Poles: 1
  
• Amperage: 20A
  
• Voltage Rating: 120/240VAC
  
• Interrupting Rating: 65kA @ 120/240VAC
  
• Frame Type: HBFGA2
  
• Protection Type: Combination AFCI and 5mA GFCI (Dual Function)
  
• Breaker Type: Bolt-On Molded Case Circuit Breaker
  
• Approximate Shipping Weight: 1 lb
  
• Approximate Shipping Height: 5 inches
  

Material Compliance and Certifications

• Industry Standards: The B120DFHH is designed to meet applicable industry standards for molded case circuit breakers and arc-fault/ground-fault protection devices. Its Combination Type AFCI functionality detects both series and parallel arc faults, while the integrated 5mA GFCI protection supports personnel safety requirements commonly outlined in the National Electrical Code (NEC). Always confirm compatibility and code requirements before installation.
  

Where It Works Best

• This 20 amp dual function breaker is commonly used in residential spaces such as kitchens, laundry rooms, bedrooms, and living areas where AFCI and GFCI protection may be required. It’s also suitable for light commercial environments like offices or small retail spaces. The higher 65kA interrupting capacity makes it a solid choice for installations with elevated fault current levels.