Siemens B120HH - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens B120HH, a reliable 20 A, 120 V, 1-pole bolt-on molded case circuit breaker designed to safeguard your electrical system. Built for dependable branch circuit overcurrent and short-circuit protection, it slots seamlessly into panelboards and load centers, delivering steadfast performance in homes, small offices, and light industrial setups. Available through AmpState, this breaker is trusted by professionals for durable, long-term service.

• Secure bolt-on mounting allows a rigid, vibration-resistant bus connection, helping maintain consistent protection even in environments with equipment vibration or movement.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining thermal overload sensing with fast magnetic response to short circuits, reducing nuisance trips and enhancing safety.
• OEM-compatible design is intended to work with matching Siemens OEM load centers and panelboards, ensuring a clean fit and reliable operation when upgrading or expanding your panel.
• Versatile application ideal for residential, commercial, and light industrial installations that require compact, dependable circuit protection for individual branch circuits.

The Siemens B120HH is a one-pole, 20-amp, 120-volt thermal-magnetic molded case circuit breaker built for straightforward, durable protection. Its bolt-on mounting and robust bus connection minimize vibration-induced wear, helping extend the life of your panel while maintaining precision protection against overloads and short circuits.

Why choose the Siemens B120HH for your panel?

• Exact fit for compatible panelboards ensures dependable operation when integrated into Siemens OEM load centers and panelboards, simplifying maintenance and future upgrades.
• Clear protection you can rely on with a trip unit engineered to respond quickly to short circuits and moderate overloads, helping protect wiring, devices, and loads from damage.
• Compact, efficient design suits commercial spaces, residential basements, or light industrial rooms where space is at a premium but protection remains critical.

Technical snapshot

• Manufacturer: Siemens
• Part Number: B120HH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20 A
• Voltage Rating: 120 V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Whether you're replacing a failing breaker, upgrading a panel, or expanding a system, the Siemens B120HH delivers precise protection with a straightforward installation path. Its bolt-on design and compatibility with Siemens OEM load centers ensure a dependable, long-lasting solution for safeguarding circuits in a variety of settings. If you’re aiming for solid, predictable performance in a compact package, this 20 A, 120 V, 1-pole bolt-on breaker is a practical, trusted choice.