Siemens | ED41B045 | Circuit Breaker | 45A | 1-Pole | 277V | Bolt-On

Meet the Siemens ED41B045 circuit breaker — a dependable, bolt-on, 1-pole device engineered for 45 amps and 277 volts. Designed for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker helps you restore reliable protection without overhauling your panel.

Key specifications

• Amperage: 45A
• Poles: 1-Pole
• Voltage: 277V
• Mounting: Bolt-On
• Part number: ED41B045

Why choose this Siemens ED41B045

This bolt-on circuit breaker is tailored for 277V distribution environments, delivering solid, on-site protection in a compact, straightforward package. The 1-pole design targets a single live conductor, making it an ideal fit for dedicated circuits within commercial or light-industrial panels. Its Siemens heritage means compatibility with Siemens panels and a reliable, consistent performance in demanding electrical environments.

Use cases and practical applications

• Retrofit upgrades in commercial or industrial panels that operate at 277V and require a matching 1-pole breaker.
• Maintenance replacements to restore original protection levels and minimize downtime.
• New installations for 277V circuits where a compact, bolt-on mounting solution is preferred.

Fit, compatibility, and installation tips

Always confirm fit and ratings before ordering. The ED41B045 part number is the best reference for compatibility with Siemens panels that accept bolt-on, 1-pole 277V breakers. When replacing an existing device, verify the mounting type, pole count, and voltage match to ensure a seamless swap and reliable protection.

What you gain

Clear, dependable over-current protection with a straightforward, secure installation path. This breaker supports efficient panel servicing and a smooth upgrade path for existing 277V circuits, helping you keep systems running safely and with minimal disruption.