B120AF - 20Amp Circuit Breaker

B120AF - 20Amp Circuit Breaker

Keep your home or facility safe with the Siemens B120AF, a 1-pole, 20A circuit breaker designed for reliable everyday protection. Rated at 120VAC with a 10kA interrupting capacity, this HACR-rated breaker doesn’t just guard against overloads and short circuits—it also includes Arc Fault Circuit Interruption (AFCI) to help prevent dangerous electrical arcs that can spark fires. Its thermal-magnetic trip responds quickly when needed, without causing unnecessary interruptions, so your circuits stay protected and your equipment keeps running smoothly.

Measuring 3.56" long, 1" wide, and 2.38" deep, the B120AF is compact and easy to install in panels or motor control centers.

Key Features and Benefits

• 20A rating for single-phase circuits
• Arc Fault Circuit Interruption (AFCI) for fire prevention
• Thermal-magnetic trip for fast overload and short-circuit protection
• 120VAC with 10kA interrupting capacity
• Bolt-on design for secure, easy installation
• Compact size fits panels and motor control centers
• Type BAF construction ensures long-term durability

Technical Specifications

• Part Number: B120AF
• Poles: 1
• Amperage Rating: 20A
• Voltage Rating: 120VAC
• Interrupting Capacity: 10kA
• Mounting: Bolt-on
• Depth: 2.38 in
• Width: 1.0 in
• Height: 3.56 in
• Maximum Operating Temperature: 40¼C
• Type: BAF – Molded Case Circuit Breaker with AFCI

Material Compliance and Certifications

• UL listed and HACR-rated, meeting North American safety standards for residential, commercial, and light industrial circuits.

Where It Works Best

• The B120AF is perfect for:
• HVAC systems
• Residential panels
• Pumps
• and motor-driven equipment where safety is a priority.