Siemens ED63B050L - 50 A, 600 V, 3-Pole Circuit Breaker | AmpState

Siemens ED63B050L (available from AmpState) is a 50A, 600V, 3-pole molded case circuit breaker engineered to deliver dependable overcurrent and short-circuit protection for panelboards and load centers. This device is purpose-built to keep critical electrical circuits safe while maximizing space in your enclosure.

The compact molded case design minimizes footprint, freeing valuable panel space for additional circuits and easier wire management. Paired with a thermal-magnetic trip unit, the ED63B050L delivers stable, repeatable protection performance—fast to respond to faults, yet calibrated to minimize nuisance trips during normal load fluctuations.

Designed for seamless integration, it is compatible with matching OEM Siemens loadcenters and panelboards, ensuring reliable replacement and serviceability without sacrificing performance. Its 3-pole configuration makes it ideal for 3-phase systems and multi-wire applications commonly found in commercial and light industrial environments, while still valuable in select residential setups that require a robust 3-pole protection device.

Key advantages

• Compact molded case design preserves panel space and simplifies wiring in crowded enclosures.
• Thermal-magnetic trip unit provides predictable protection curves and fast fault interruption for enhanced safety.
• 3-pole configuration supports 3-phase feeders and complex branch circuits typical in commercial and light industrial applications.
• OEM-compatible with Siemens panelboards and load centers for straightforward upgrades and maintenance.
• 50A, 600V rating covers a wide range of branch circuits and feeder protections while meeting common electrical code requirements.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: ED63B050L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50A
• Voltage rating: 600V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases and installation considerations

• Residential: Use where a 3-pole protection device is required for specific multi-wire or specialty circuits in a home electrical system.
• Commercial: Protect feeders and distribution circuits in office buildings, retail spaces, or service panels with compatible Siemens hardware.
• Light industrial: Safeguard 3-phase feeders in small-to-mid-size equipment rooms and control panels.
• Installation tips: Verify panelboard compatibility with the ED63B050L series, follow local electrical codes, and consult a qualified electrician for proper installation and enclosure clearance.