Siemens | B245R00S01 | Circuit Breaker | 45A | 2-Pole | 240V

Siemens B245R00S01 stands ready to protect your 240V circuits with precise, dependable performance. This 2-pole, 45A circuit breaker is engineered for maintenance, retrofit, and replacement projects where exact part compatibility matters, helping you keep panels energized and safe without guesswork. Key specifications at a glance

• Amperage: 45A
• Poles: 2-Pole
• Voltage: 240V
• Part Number: B245R00S01

Why this Siemens breaker is the smart choice - Exact fit, exact reference: When your panel calls for B245R00S01, this Siemens unit is designed to match the electrical characteristics and footprint required for secure, compliant operation. - Balanced two-pole protection: The 2-pole design ensures both hot legs in a 240V circuit are interrupted together, reducing the risk of misbalanced faults and improving overall circuit protection in residential and light commercial panels. - Reliable for retrofit and replacements: If you’re upgrading aging hardware or restoring a panel to its intended protection profile, this part provides a trustworthy, long-service-life option without necessitating a panel rework. Who this is ideal for - Electricians and technicians performing panel maintenance, retrofits, or part replacements in homes and small commercial settings. - Homeowners working on 240V circuits who need a precise Siemens part that aligns with existing panel listings and warranty requirements. - Projects where exact part compatibility is crucial to preserve code compliance and system integrity. What problems it solves - Eliminates uncertainty in part compatibility during replacements, reducing installation delays. - Restores proper protection for 240V circuits that rely on a precise 2-pole 45A rating, ensuring simultaneous shutoff of both conductors. - Supports upgrades or repairs that require a Siemens-branded solution to maintain panel labeling, warranty considerations, and performance expectations. How it compares to alternatives (without naming competitors) - Precision fit: Unlike generic substitutes, this unit is designed to align with Siemens specifications and field references, helping you avoid mismatches that compromise panel listings. - Consistent performance envelope: With a defined 45A, 2-pole, 240V specification, you know exactly what protection level you’re installing, which simplifies project planning and reduces rework. - Reliability built in: Siemens’ design ethos emphasizes durable construction and predictable operation, offering peace of mind for critical residential and light commercial circuits. Practical use and installation notes - Before ordering, confirm fit and ratings: The part number B245R00S01 is the best reference for compatibility with your panel system. If the reference aligns, you’re selecting a dependable, field-proven component. - Use in 240V circuits that require dual-leg interruption: A 2-pole breaker protects both hot conductors, which is essential for properly isolating load circuits and enabling safe maintenance. - Pair with standard panel procedures: Shunt off the main power, verify there’s no residual voltage, and follow the panel manufacturer’s installation guidelines when seating the breaker. - Warranty and documentation: When a Siemens part matches your catalog number, you’re more likely to preserve panel labeling, warranty eligibility, and traceability for future service. Maintenance and care tips - Inspect for wear during routine panel checks; replace any unit showing signs of physical damage, overheating, or nuisance tripping. - Keep track of part numbers during inventoryant to ensure future replacements remain a clean match for your panel’s protection scheme. - Store surplus parts in a controlled environment to prevent corrosion or contamination that could affect performance. Notes - Important: Confirm fit and ratings before ordering. The part number B245R00S01 is the best reference for compatibility. This Siemens 2-Pole 45A 240V circuit breaker is a focused, high-confidence choice for professional installers and informed homeowners who demand precise compatibility, reliable protection, and straightforward retrofits. If your project calls for a direct match to B245R00S01, you’re selecting a component built to integrate smoothly with your existing Siemens panel design and protection strategy.