Siemens | HED41B045L | Circuit Breaker | 45A | 1-Pole | 277V

The Siemens HED41B045L Circuit Breaker is a precise, reliable protection solution designed for 277V single-pole circuits. With a 45A rating, it provides robust overcurrent protection for maintenance, retrofit, and replacement projects where exact specifications matter—so you can keep critical equipment running smoothly without unnecessary downtime.

Why this specific breaker stands out: the HED41B045L is the exact reference for compatibility in Siemens panels and configurations. Using the correct part number minimizes guesswork, reduces the risk of improper fit, and ensures the breaker’s trip characteristics align with your system’s design—delivering dependable protection when it’s needed most.

Key specifications

• Amperage: 45A
• Poles: 1-Pole
• Voltage: 277V
• Part number: HED41B045L

Ideal use cases

Designed for scenarios where a 277V single-pole circuit needs dependable protection. This makes it an excellent choice for:

• Maintenance projects that restore original protection levels
• Retrofits that introduce 277V equipment or new configurations
• Replacement of a failing breaker with a precise Siemens-compatible substitute

How it helps you avoid common issues

• Exact compatibility via the HED41B045L part number reduces misfits and returns
• Consistent protection for 277V circuits, helping prevent overcurrent damage to wiring and connected devices
• Streamlined procurement for technicians and facility managers who rely on Siemens-specific components

Important: Before ordering, confirm fit and ratings against your panel and system. The part number is the most reliable reference to ensure the breaker matches your equipment’s design and safety requirements.