Siemens B125HH - 25 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens B125HH — 25A, 120V, 1-Pole Bolt-On Circuit Breaker from AmpState is designed to deliver dependable branch circuit protection for panelboards and load centers.

Why this bolt-on breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping minimize loose connections and arcing in cabinets and high-traffic electrical spaces.
• Thermal-magnetic trip unit delivers stable, repeatable protection across temperature changes and fault currents, reducing nuisance trips while safeguarding wiring and devices.
• 1-pole, 25A, 120V design is purpose-built for branch circuits such as lighting, receptacles, and small-appliance runs, making it an ideal fit for residential panels and light commercial installations.
• OEM-compatible engineered to pair with Siemens OEM load centers and panelboards for straightforward replacement without adapters or rework.
• Versatile application suitable for residential, commercial, and light industrial electrical distributions, including service panels, subpanels, and upgrade projects.

Key specifications at a glance

• Manufacturer: Siemens
• Part number: B125HH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 25A
• Voltage rating: 120V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases

• Upgrading or replacing breakers in residential service panels to reliably protect lighting and receptacle circuits.
• Installing in small commercial spaces where a compact, secure, single-pole solution is required for specific branch circuits.
• Replacing aging breakers in Siemens-compatible load centers to restore consistent protection without compatibility concerns.
• In light industrial environments, leveraging a robust bolt-on connection to withstand vibration and frequent device cycling.

Why it matters for your electrical system

The B125HH combines a secure bolt-on mount with a precise thermal-magnetic trip curve, delivering dependable protection that adapts to real-world conditions. By minimizing loose connections and nuisance trips, it helps protect wiring, outlets, and connected equipment while keeping your panel organized and reliable.

Installation and compatibility tips

• Choose this breaker for Siemens OEM load centers and panelboards to ensure optimal fit and trip coordination.
• Follow Siemens installation guidelines for bolt-on breakers to achieve the intended mounting rigidity and electrical continuity.
• Use in appropriate single-pole circuits rated for 120V, up to 25A, within residential, commercial, or light industrial environments.

Upgrade your panel with the Siemens B125HH 25A 120V 1-Pole Bolt-On Circuit Breaker from AmpState and expect dependable, consistent protection for your essential circuits.