Siemens | ED21B045 | Circuit Breaker | 45A | 1-Pole | 120V | Bolt-On

Siemens ED21B045 is a reliable 45A, single-pole, 120V bolt-on circuit breaker designed for maintenance, retrofit, and replacement projects where exact compatibility matters. This 1-pole unit delivers solid overcurrent protection in compatible Siemens panels, helping you keep essential circuits safe and compliant.

• Amperage: 45A — balances protection for higher-draw circuits with efficient, predictable performance.
• Poles: 1-Pole — supports a standard 120V branch circuit from the panel bus.
• Voltage: 120V — suitable for common residential and light commercial circuits.
• Connection: Bolt-On — provides a secure, rugged mounting in panels designed for bolt-on breakers.
• Reference: Part number ED21B045 — use this as the primary compatibility reference to ensure you’re choosing the right replacement.

Key benefits in real-world scenarios:

• Ideal for panel maintenance, retrofit projects, and replacement where exact Siemens specifications are required.
• With a bolt-on design, it delivers a dependable connection that resists vibration and meets the demands of busy service environments.
• Designed to integrate smoothly with Siemens-compatible panels, reducing guesswork during upgrades and replacements.

Who should consider this breaker? Electricians and homeowners undertaking panel service, upgrades, or replacements in Siemens systems. If your panel calls for a bolt-on, 1-pole 120V breaker with a 45A rating, ED21B045 is the best-fit choice that aligns with your existing electrical infrastructure.

Important compatibility note: Before ordering, confirm fit and ratings for your specific panel. The part number is the most reliable reference for compatibility, and consulting your panel label or Siemens catalog will help ensure a seamless match.

When you’re ready to restore reliable protection to your circuit, choose the Siemens ED21B045 45A, 1-Pole, 120V bolt-on circuit breaker. It’s built for dependable operation, straightforward replacement, and long-term availability within Siemens’ breaker family.