Siemens - Marq 21 - Breaker MCC Bucket - 400 A, 208 V, 42" Height, 3 P | AmpState

Engineered for demanding industrial motor control environments, the Siemens Marq 21 Breaker MCC Bucket delivers a precise, ready-to-deploy solution for 400 A, 208 V, 3-Pole configurations. Designed to slot seamlessly into Siemens Marq 21 MCC lineups, this bucket is the quintessential OEM replacement and retrofit option for durable, long-term performance in manufacturing, processing, and heavy machinery applications.

Key specifications at a glance

• Brand: Siemens
• Series: Marq 21
• Configuration: Breaker MCC Bucket
• Rating: 400 A, 208 V, 3-Phase
• Bucket Height: 42 inches
• Applications: Industrial motor control centers, OEM replacements, retrofit projects

Why this MCC bucket stands out

• Purpose-built for Marq 21 systems: The bucket aligns with Siemens’ Marq 21 architecture, ensuring proper bus alignment, mounting, and interlock compatibility for reliable operation from day one.
• High-current capability with clean three-phase performance: Rated for 400 A at 208 V, it handles demanding motor loads, starting surges, and routine switching without compromising stability or safety.
• OEM-grade reliability for retrofits: This part is designed to fit existing Marq 21 panels, minimizing downtime and rework when upgrading or replenishing aging MCC components.
• Long-term maintenance and serviceability: The 42" bucket height is optimized for standard Siemens layouts, making inspection, fault tracing, and routine maintenance straightforward in busy plant environments.
• Worldwide support from AmpState: AmpState provides access to trusted Siemens MCC components with global availability, ensuring quick sourcing and compatible replacements for facilities worldwide.

Ideal use cases

• OEM rebuilds of existing production lines that rely on Siemens Marq 21 MCC configurations.
• Retrofits to upgrade motor control capacity or replace worn MCC buckets in aging systems.
• New installations requiring a robust, industry-proven 400 A, 208 V, 3-Pole breaker bucket within a Siemens Marq 21 framework.
• Facilities seeking consistent electrical performance for heavy-duty motors, pumps, conveyors, and processing equipment.

Installation and practical considerations

For a smooth upgrade or replacement, verify compatibility with your current Marq 21 enclosure, ensure correct pole configuration, and confirm mounting clearances align with the 42" bucket height. This MCC bucket is intended for professional installation by qualified personnel in accordance with all applicable electrical standards and safety practices. When in doubt, consult AmpState for guidance on best-fit replacements and stocking recommendations to minimize downtime.

What you gain with Siemens Marq 21 Breaker MCC Bucket

• Consistent performance in demanding industrial environments thanks to Siemens engineering.
• Reduced downtime through OEM-compatible design that fits straight into existing Marq 21 systems.
• Reliable support and parts availability from AmpState for global projects and maintenance cycles.