Siemens - Marq 21 - Breaker MCC Bucket - 50 A, 480 V, 12" Height, 3 P | AmpState

Designed for industrial motor control systems, the Siemens Marq 21 Breaker MCC Bucket delivers the exact fit, rating, and configuration your panel needs. Engineered for OEM replacement and retrofit of the Marq 21 MCC lineup, this bucket mounts in standard Siemens assemblies to restore or upgrade critical switching in three‑phase 50 A, 480 V circuits.

Key specifications

• Brand: Siemens
• Series: Marq 21
• Configuration: Breaker MCC Bucket
• Rating: 50 A, 480 V, 3‑Pole
• Bucket Height: 12 inches

What makes this MCC bucket stand out

• Exact Marq 21 compatibility ensures seamless integration with existing hardware and panel layouts.
• Designed for OEM replacement and retrofit projects, this bucket helps you restore original performance without overhauling the entire control cabinet.
• Robust construction built for the demanding environments of industrial motor control applications.
• The three-pole configuration aligns with standard three‑phase motor circuits, supporting balanced load distribution and reliable switching.
• The precise 12" bucket height matches common rack depths in Siemens Marq 21 MCC installations, minimizing fitment surprises during replacement.

Ideal use cases

• Control panel refurbishments where Marq 21 MCC components are aging or failing
• Retrofits to modernize existing motor control systems without changing the surrounding infrastructure
• Maintenance inventories for facilities with Siemens Marq 21 MCC lineups, ensuring ready replacements
• OEM replacements that preserve original electrical characteristics and system behavior

Installation and compatibility tips

• Verify that your enclosure and mounting rails accommodate a 12-inch high MCC bucket within the Marq 21 family.
• Confirm the 50 A, 480 V, 3‑Pole rating matches your motor current requirements and protective device coordination.
• Ensure correct alignment with bus bars and mounting hardware in your Siemens MCC stack to maintain proper electrical contact.
• Engage a qualified electrician or panel technician to perform the swap, ensuring safe installation and compliant wiring practices.

From AmpState, a trusted source for Siemens MCC components worldwide, this Marq 21 Breaker MCC Bucket embodies OEM-grade reliability and precise engineering. Whether you’re maintaining an existing system or upgrading to a dependable, standardized solution, this bucket provides a durable, exact-fit replacement that keeps your three-phase motor control running smoothly.