Siemens 3TA1QR300 300A 1P 240V Circuit Breaker | AmpState

Siemens 3TA1QR300 is a rugged, single-pole 300 A circuit breaker designed for reliable protection in panelboards, load centers, and electrical distribution systems. Built for everyday electrical work, it delivers dependable protection for 240 V circuits while helping maintenance teams keep critical infrastructure running smoothly.

This breaker is a smart choice when a direct part-number match matters. The 3TA1QR300 is engineered for straightforward substitution in existing Siemens installations, reducing downtime and simplifying inventory management for panel builders and service teams alike.

• 1-pole design ideal for protecting a single 240 V circuit
• 300 A rating suited for high-current distribution in panels and feeders
• Direct part-number match streamlines stocking, ordering, and field upgrades
• Applications—panelboards, load centers, and broad electrical distribution systems
• Brand trusted by professionals—Siemens quality you can rely on
• AmpState availability to simplify procurement and project planning

Who benefits most:

• Maintenance teams responsible for keeping critical electrical systems up and running
• Panel builders who need precise, compatible replacements
• Facilities managers stocking spare parts for quick response to outages

Use cases to consider:

• Replacing aging or failed breakers in 240 V distribution panels
• Reinforcing spare inventory for high-demand panelboard configurations
• Ensuring reliable protection for essential circuits in commercial or industrial facilities

Why it matters — a matched Siemens breaker like the 3TA1QR300 minimizes compatibility risk, accelerates installation, and maintains consistent protection across your electrical distribution system. By sticking with a familiar, reputable part number, you reduce troubleshooting time and improve first-time fit accuracy.

If you’re unsure about compatibility or need help confirming a fit, message us and we’ll assist with part-number matching and configuration guidance to keep your project on track.

Add the Siemens 3TA1QR300 to your panel protection lineup and rely on a trusted solution that aligns with your 240 V distribution needs and inventory strategy.