Siemens ED63B040 - 40 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet Siemens ED63B040 — a 40A, 600V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters.

Engineered for challenging environments, the secure bolt-on mounting provides a rigid, vibration-resistant bus connection that helps prevent loose contacts and nuisance trips. The thermal-magnetic trip unit delivers stable, repeatable protection, responding quickly to overcurrent events while coordinated trip settings help safeguard sensitive equipment in your electrical system.

Key advantages you’ll feel on the job:

• Bolt-on mounting for a solid, vibration-resistant connection that stays put through everyday panel activity.
• Thermal-magnetic trip unit for reliable protection against both gradual overloads and sudden short circuits.
• 3-pole design suited for three-phase distribution and comprehensive circuit protection.
• 40A current rating and 600V compatibility to cover a wide range of residential, commercial, and light industrial applications.
• OEM compatibility with matching Siemens loadcenters and panelboards, enabling straightforward replacements and streamlined service.

Technical snapshot

• Manufacturer: Siemens
• Part Number: ED63B040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

Install in new or existing panels to provide robust protection for three-phase loads in light commercial settings, small industrial equipment feeds, or complex distribution layouts. It’s also a practical replacement option when upgrading older breakers in Siemens-compatible loadcenters, helping maintain consistent trip characteristics and ease of maintenance.

Why this matters for you

This ED63B040 isn’t a generic breaker. It combines Siemens engineering with a bolt-on design that enhances connection integrity in real-world installations, reducing the chance of contact issues and improving long-term reliability. If you’re assembling or upgrading a panelboard that requires strong, three-phase protection with OEM compatibility, this 3-pole breaker is a thoughtful, future-proof choice that aligns with Siemens standards and service workflows.