Siemens P250 - 50 A, 1-Pole Bolt-On Circuit Breaker | AmpState

Engineered for dependable branch-circuit protection, the Siemens P250 is a 50A, 1-pole bolt-on molded case circuit breaker designed to thrive in panelboards and load centers. This compact, rugged device delivers fast, reliable protection where space is at a premium and vibration can challenge connections.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that helps prevent loose contacts and nuisance trips in demanding environments.
• Thermal-magnetic trip unit offers stable, repeatable protection performance for both overloads and short circuits, reducing the risk of arc faults and equipment damage.
• OEM-compatible design ensures seamless integration with matching Siemens loadcenters and panelboards for a streamlined, code-compliant installation.
• Versatile application ideal for residential, commercial, and light industrial branch circuits that require dependable overcurrent and short-circuit protection in a compact footprint.
• 1-pole, 50A configuration provides targeted protection for individual circuits without unnecessary disruption to neighboring lines.

Who should consider it? electricians, facilities managers, and contractors seeking a reliable, field-proven solution for protecting individual branch circuits in panelboards and load centers. The P250 is well-suited for retrofit projects and new installs where Siemens compatibility, a compact form factor, and robust protection are priorities.

Why this matters — with a thermal-magnetic trip unit, you get predictable trip behavior under varying load conditions, minimizing downtime and simplifying electrical maintenance. The bolt-on design reduces the risk of bus-bar movement over time, offering lasting performance in installations subject to vibration, temperature swings, or routine panel servicing.

Technical specifications

• Manufacturer: Siemens
• Part Number: P250
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 50A
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

In practice, use the Siemens P250 50A 1-pole bolt-on circuit breaker to isolate and protect individual branches feeding outlets, lighting, small mechanical devices, or other essential loads within a panelboard. Its combination of secure mounting, precise thermal-magnetic protection, and OEM-grade compatibility helps you maintain electrical reliability, safety, and performance across a broad range of facilities.