Siemens ED63B045 - 45 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens ED63B045—a robust 3-pole bolt-on molded case circuit breaker built to protect your distribution system with precision. Rated at 45 A and capable of handling up to 600 V, this unit is purpose-made for reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers.

Why the ED63B045 stands out

• Bolt-on mounting for a secure, vibration-resistant bus connection: The bolt-on design creates a solid, low-resistance link that stays tight through operation, reducing movement that can affect protection performance.
• Thermal-magnetic trip unit for stable, repeatable protection: The thermal element detects and limits nuisance trips from gradual overloads, while the magnetic element reacts rapidly to high fault currents, delivering dependable short-circuit interruption.
• 3-pole configuration for 3-phase applications: Perfect for residential, commercial, and light industrial systems requiring coordinated protection across all phases.
• 600 V maximum rating: Suitable for a wide range of panelboard and load center designs that demand solid overcurrent protection at higher voltage levels.
• OEM compatibility: Designed to be used with matching Siemens OEM load centers and panelboards, ensuring a seamless, integrated protection solution.

Ideal use cases and practical applications

Use the ED63B045 in service panels, distribution panels, and subpanels where three-phase protection is required. It’s an excellent choice when upgrading older equipment or designing a new installation that demands dependable, engineered protection for branch circuits. Its bolt-on approach is particularly advantageous in environments with vibration or movement, where a secure connection helps maintain consistent trip performance over time.

Technical snapshot

• Siemens
• ED63B045
• Thermal-magnetic molded case circuit breaker
• 45 A
• 600 V
• 3
• Bolt-on
• Branch circuit overcurrent and short-circuit protection

With the Siemens ED63B045, you’re choosing a purpose-built protection device that prioritizes connection integrity, predictable trip behavior, and compatibility with your Siemens panel ecosystem. It’s a thoughtful, durable solution for delivering safe, reliable electrical protection across residential, commercial, and light industrial settings.