B120AF - 20Amp Circuit Breaker Description
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.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.
Specifications
- Width:1.0
- Height:3.56
- Depth:2.38
- Poles:1
- Amperes:20
- A.I.C. Rating & Volts:10k @ 120VAC
- Type:BAF
- Approx Dimensions:1.00"W x 3.56"L x 2.38"D
- Additional Notes:HACR rated, Bolt-on Molded Case Circuit Breaker with Arc Fault Circuit Interruption, 40°C
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE shipping on breaker orders over $100 and all other items with orders over $500.
CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).
Same Day Shipping
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CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).