Siemens | ED41B045L | Circuit Breaker | 45A | 1-Pole | 277V

Engineered for dependable protection in 277-volt electrical systems, the Siemens ED41B045L circuit breaker delivers reliable, OEM-grade performance for maintenance, retrofit, and replacement projects where exact specifications matter. This 45A, 1-pole device is designed to slot into compatible Siemens configurations with ease, helping protect downstream wiring and connected equipment from overloads and faults.

Key specifications

• Amperage: 45A
• Poles: 1-Pole
• Voltage: 277V
• Part number: ED41B045L
• Applications: maintenance, retrofit, and replacement where matching specs are required

Why this Siemens breaker stands out

• OEM-grade compatibility ensures you’re pairing with the original design intent and panel architectures, reducing the guesswork during upgrades or replacements.
• 277-volt suitability makes it a practical choice for commercial lighting circuits and other 277V distribution needs.
• Clear compatibility cue: the part number ED41B045L is the best reference for ensuring a correct match in your system.

Ideal use scenarios

• Maintenance: swap in a like-for-like breaker to restore circuit protection without altering panel configuration.
• Retrofits: upgrade legacy systems to a modern, reliable 45A, 277V, 1-pole solution that fits existing Siemens infrastructure.
• Replacements: pull a failed unit from a compatible Siemens panel and replace it with ED41B045L to maintain consistent protection characteristics.

How to verify compatibility

Before ordering, confirm fit and ratings against your panel’s documentation. The ED41B045L part number is the most reliable reference to ensure seamless replacement or retrofit. If your system operates at 277V and requires a 45A, 1-pole protection device within Siemens’ family, this breaker is a precise match.

What you get

• One Siemens ED41B045L circuit breaker (45A, 1-Pole, 277V)
• A trusted, industry-standard component designed to work within compatible Siemens panels and circuits