Siemens B120AFC - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens B120AFC – 20A, 120V, 1-Pole Bolt-On Circuit Breaker Designed for dependable branch circuit protection in panelboards and load centers, the Siemens B120AFC is a compact, single-pole solution built to handle everyday overcurrent and short-circuit scenarios with precision. Its bolt-on mounting creates a rigid, vibration-resistant bus connection that stays secure even in environments with movement or vibration. Key advantages you’ll notice in real-world use - Secure bolt-on mounting for a rock-solid bus connection that minimizes loose contacts and arcing. - Thermal-magnetic trip unit delivers stable, repeatable protection: the thermal element protects against overheating, while the magnetic element delivers a fast response to short circuits. - OEM-compatible with matching Siemens load centers and panelboards, simplifying replacement and upgrades. - Versatile for residential, commercial, and light industrial applications, making it a practical choice for multi-site projects. Why this breaker stands out - 20A, 120V single-pole design tailored for individual branch circuits, such as lighting, outlets, or dedicated equipment. - Molded case construction adds durability and predictable performance under typical operating conditions found in homes and small facilities. - The combination of precise thermal sensing and rapid magnetic trip ensures consistent protection, helping prevent wiring damage and nuisance trips on normal loads. Use case scenarios - Home or apartment electrical panels: protect a dedicated 20A circuit feeding kitchen small appliances or a workshop outlet group. - Small business environments: safeguard lighting or receptacle circuits in offices, retail spaces, or service counters. - Light industrial setups: manage protection for individual machines or equipment that run on 120V. What you get with installation and maintenance - Simple bolt-on installation that aligns with compatible Siemens panelboards and OEM enclosures, minimizing retrofit complexity. - Regular protection performance without frequent recalibration, thanks to the integrated thermal-magnetic mechanism. - Clear part identification (B120AFC) to simplify replacement, ordering, and cross-referencing within Siemens’ lineup. Technical specifications at a glance - Manufacturer: Siemens - Part Number: B120AFC - Type: Thermal-magnetic molded case circuit breaker - Amperage Rating: 20A - Voltage Rating: 120V - Number of Poles: 1 - Mounting Style: Bolt-on - Application: Branch circuit overcurrent and short-circuit protection Ideal for electricians, facility managers, and DIY installers who value reliable protection, straightforward compatibility, and a robust mounting design that reduces vibration-induced issues. The Siemens B120AFC provides precise, predictable protection for single-circuit needs while fitting neatly into Siemens’ ecosystem of panels and accessories.