Siemens - Marq 21 - Breaker MCC Bucket - 400 A, 600 V, 42" Height, 3 P | AmpState

Designed for demanding industrial motor control environments, the Siemens Marq 21 Breaker MCC Bucket delivers reliable, OEM-grade protection for your largest 3‑phase motors. Engineered specifically for the Siemens Marq 21 MCC lineup, this 400 A, 600 V, 3‑Pole bucket is built to integrate seamlessly into existing cabinets, enabling smooth OEM replacement and efficient retrofits without sacrificing performance or safety. With a full 42" bucket height, it aligns with standard Marq 21 enclosures for a straightforward installation and dependable long‑term service life.

Why this MCC bucket stands out

• Exact Marq 21 compatibility: Precision‑engineered to fit Siemens Marq 21 MCC systems, ensuring proper mounting, bus bar continuity, interlocks, and trip coordination.
• Robust electrical ratings: 400 A continuous current and a 600 V rating support demanding motor starts and heavy-duty protection across industrial applications.
• 3‑Pole configuration: Provides balanced protection for typical three-phase motors, enabling accurate fault isolation and reliable system uptime.
• OEM replacement and retrofit ready: Ideal for upgrading aging MCCs or refurbishing existing Siemens installations without the need for extensive enclosure redesigns.
• Strategic availability from AmpState: Source genuine Siemens MCC components with global reach, designed for quick fulfillment and dependable supply in critical maintenance cycles.

Who benefits most

• Maintenance teams overseeing medium to large motor drives that require solid 400 A protection and a durable 3‑pole setup.
• Engineers and integrators performing retrofits on active production lines to meet updated protection standards or improve reliability.
• OEMs designing or upgrading machinery that relies on Siemens Marq 21 MCC architecture for centralized motor control.

Practical guidance and use cases

• OEM replacement: Swap in the Marq 21 Breaker MCC Bucket to restore original performance characteristics and preserve cabinet layout.
• Retrofit projects: Use this bucket to upgrade protection curves and coordination within existing Marq 21 arrangements, reducing downtime and improving safety margins.
• Spare parts strategy: Maintain a ready‑to‑deploy bucket in critical facilities to minimize extended outages when a breaker module reaches end of life.

In environments where reliability, compatibility, and prompt availability matter most, the Siemens Marq 21 Breaker MCC Bucket—400 A, 600 V, 3‑Pole, 42" tall—delivers precise fit, proven protection, and the assurance that comes from sourcing genuine Siemens components through AmpState. Whether upgrading an aging line or integrating into a new build, this bucket is built to keep your motor control center functioning with clarity and confidence.