Siemens - Marq 21 - Breaker MCC Bucket - 50 A, 480 V, 15" Height, 3 P | AmpState

Siemens Marq 21 Breaker MCC Bucket, 50 A, 480 V, 3-Pole, 15" Height is engineered for serious industrial motor control needs. This MCC bucket is tailored for the Siemens Marq 21 family, delivering a precise, plug-in replacement that keeps your panels operating with minimal downtime. With a compact 15" bucket height, it fits neatly into standard Marq 21 enclosures while delivering the protection and control your equipment relies on.

Key specifications

• Brand: Siemens
• Series: Marq 21
• Configuration: Breaker MCC Bucket
• Rating: 50 A, 480 V, 3-Pole
• Bucket Height: 15"

Why this bucket stands out

Designed specifically for the Marq 21 MCC lineup, this breaker MCC bucket ensures exact fit, alignment, and electrical characteristics that generic alternatives simply can’t guarantee. OEM replacement and retrofit projects benefit from a seamless integration path, reducing installation time and the risk of compatibility gaps. The 50 A, 480 V, 3-Pole configuration is purpose-built for standard industrial motor protection schemes, supporting reliable startup, protection coordination, and safe disconnection in demanding environments.

Who benefits most

• Manufacturers and facilities upgrading aging MCCs to the Marq 21 standard
• OEMs performing retrofit projects to maintain consistency across new builds and existing lines
• Maintenance teams needing a ready-to-install spare bucket to minimize downtime
• Industrial operations running medium‑sized motors at 480 V with three‑phase protection

Use cases and practical applications

In mid- to large-scale production lines, this Marq 21 breaker MCC bucket acts as the critical protection and control point for motor starter assemblies. It’s ideal for scenarios such as replacing worn-out MCC components during scheduled outages, expanding a control center to accommodate additional motors, or standardizing component inventories across multiple lines to simplify maintenance and sourcing. When paired with other Siemens Marq 21 modules, it helps maintain consistent performance, electrical coordination, and safer shutdowns during fault conditions.

Installation and availability

As part of AmpState’s portfolio, this MCC bucket is intended to slot into Marq 21 systems with minimal adaptation. Its design supports straightforward OEM replacement and retrofit work, helping you preserve panel schematics and reduce project timelines. AmpState’s global sourcing ensures ready availability for international projects and fleets, so you can plan maintenance and upgrades with confidence.

How it helps your operation

Customers choosing the Siemens Marq 21 Breaker MCC Bucket gain:

• Consistent electrical performance aligned with the Marq 21 family
• Reduced downtime through reliable, quick OEM replacement and retrofit compatibility
• Space-efficient 15" bucket height that fits a wide range of MCC configurations
• Clear specification matching for 50 A, 480 V, 3-Pole protection and control

For reliable, OEM-grade motor control protection within Siemens Marq 21 systems, this Breaker MCC Bucket delivers precise fit, dependable operation, and a clear path to streamlined maintenance and upgrades.