Siemens B12000S07 20A 1P 120V Circuit Breaker, Shunt Trip | AmpState

Siemens B12000S07 20A 1P 120V Circuit Breaker with Shunt Trip delivers reliable protection for electrical distribution in panelboards, load centers, and service equipment. Designed for everyday electrical work, this single-pole breaker swiftly interrupts fault currents and, with its shunt-trip feature, enables remote disconnection for enhanced safety and control in building automation or emergency shutdown scenarios.

Why choose this model? It’s not just a replacement breaker — it’s the exact original equipment part number B12000S07, engineered to keep your BOM aligned with Siemens specifications. That means faster installs, fewer fit issues, and dependable performance within existing Siemens panels and accessories.

Key specs at a glance

• Amperage: 20 A
• Poles: 1
• Voltage: 120 V
• Shunt Trip: yes (remote disconnect capability)
• Manufacturer: Siemens
• Part Number: B12000S07

Who should consider this breaker

• Electricians performing replacements in Siemens panelboards and load centers
• Facilities managers stocking spares to maintain original BOM integrity
• Systems integrators requiring a reliable remote-trip option for safety or automation racks

Practical use cases and benefits

• Residential or light commercial panels where remote shutdown capability adds safety during maintenance or controlled events
• Installations that demand exact part-number compatibility to minimize downtime and fit issues
• Emergency readiness: the shunt-trip feature supports rapid circuit isolation in response to control signals

Availability and support: AmpState carries the Siemens B12000S07, and our team can help verify compatibility with your panel and control wiring. If you’re matching a specific part number or need confirmation on fit, contact us and we’ll assist to ensure a seamless replacement.