Siemens B120H00S01 20A 1P 240V Circuit Breaker, Plug-On | AmpState

The Siemens B120H00S01 is a 20A, 1-pole, 240V plug-on circuit breaker built for everyday electrical work. It protects panelboards, load centers, and distribution systems with a reliable, genuine Siemens design that electricians trust on every project.

Why this breaker stands out: it combines fast, secure installation with precise compatibility, making field replacements quick and accurate. The plug-on design minimizes wiring errors and installation time, so maintenance crews and panel builders can keep systems online with minimal downtime.

• Plug-on convenience: quick seating onto the bus and fewer connection mistakes during replacements.
• Exact specifications: 1-pole, 20A rating at 240V, suitable for standard branch circuits across commercial, industrial, and residential applications.
• Direct part-number match: reduces ordering guesswork and ensures a precise fit in Siemens panelboards and load centers.
• dependable protection: delivers consistent overcurrent protection to help safeguard wiring and connected devices.
• Inventory-ready from AmpState: readily available to support maintenance workflows and project timelines.

Ideal use cases include maintenance crews replacing failed breakers in service panels, panel builders stocking exact-match parts for faster builds, and distributors maintaining spare inventories to minimize service delays.

The B120H00S01 is designed for Siemens equipment and compatible distribution setups that specify this part. If you’re confirming fit for a specific panel, AmpState offers support to verify compatibility and ensure you’ve got the right 20A plug-on breaker for your 240V circuits.

What’s included: One Siemens B120H00S01 circuit breaker.

Practical tips: double-check your panel model and series before ordering, keep a compact assortment of common breakers on hand for rapid responses, and store replacements in a dry, clean space to preserve terminal integrity.

Ready to secure exact-match protection for your electrical distribution system? Order the Siemens B120H00S01 20A, 1P, 240V plug-on circuit breaker from AmpState and keep your panels protected with a genuine Siemens part.