Siemens ED63A040L - 40 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens ED63A040L — 40A, 600V, 3‑Pole Bolt‑On Molded Case Circuit Breaker is designed to deliver dependable branch circuit overcurrent and short‑circuit protection within panelboards and load centers. Built for environments that demand solid mechanical stability and precise protection, this unit helps keep critical electrical systems running smoothly.

Key to its value is the secure bolt‑on mounting, which provides a rigid, vibration‑resistant bus connection. That means fewer loose connections, lower risk of nuisance trips, and easier service when you need to replace or upgrade breakers in the field. Paired with a thermal‑magnetic trip unit, the ED63A040L delivers stable, repeatable protection characteristics—fast response to faults while minimizing unnecessary trips during normal operation.

What this 3‑pole breaker is ideal for

• Three‑phase protection in commercial and light industrial electrical systems, as well as appropriate residential installations that use three‑phase panels
• Panelboard and load center upgrades or replacements within Siemens ecosystems for consistent performance
• Applications requiring reliable protection of sizeable branch circuits at up to 600V

Distinctive benefits we want you to notice

• Secure, vibration‑resistant mounting — bolt‑on design ensures a robust connection to the bus, reducing movement that can lead to wear or intermittent trips
• Thermal‑magnetic protection — stable trip characteristics across varying loads and temperatures, supporting predictable fault isolation
• OEM‑aligned compatibility — crafted to fit matching Siemens OEM panelboards and load centers, promoting uniform performance across the system

Technical snapshot

• Manufacturer: Siemens
• Part Number: ED63A040L
• Type: Thermal‑magnetic molded case circuit breaker (MCCB)
• Amperage Rating: 40 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Practical tips for maximum reliability

When integrating the ED63A040L, verify that your panelboard is compatible with this ED63A series unit to ensure consistent trip curves and seamless fit. For best results, pair it with other Siemens OEM components in the same enclosure family to maintain uniform protection performance across the distribution system. If you’re upgrading from a lower ampacity or different mounting style, anticipate a straightforward swap with this bolt‑on MCCB to restore solid protection without extensive panel modification.