Siemens - Marq 21 - Breaker MCC Bucket - 300 A, 480 V, 12" Height, 3 P | AmpState

The Siemens Marq 21 Breaker MCC Bucket is a purpose-built, OEM-grade replacement module designed for industrial motor control centers that demand dependable performance. This bucket delivers a precise 300 A, 480 V, 3-Pole configuration and comes in a 12" height—the exact fit for Siemens Marq 21 MCC lineups. It’s tailored for OEM replacement and retrofit projects, helping you maintain continuity in demanding production environments.

Key specifications at a glance

• Brand: Siemens
• Series: Marq 21
• Configuration: Breaker MCC Bucket
• Rating: 300 A, 480 V, 3-Pole
• Bucket Height: 12"

Why this bucket stands out for Marq 21 installations

Engineered specifically for the Siemens Marq 21 MCC lineup, this bucket is built to align with the electrical and mechanical expectations of your existing panel, minimizing fit issues during upgrades or replacements. Its 3-pole design supports standard three-phase motor loads at 480 V, making it a natural choice for plants running medium to high-demand applications. The 12" bucket height is designed to integrate smoothly into conventional Marq 21 sections, reducing installation time and avoiding space-related surprises.

Ideal use cases

• OEM replacements in aging Marq 21 MCC systems to restore original performance without custom fabrication
• Retrofits that upgrade or refresh motor control centers in manufacturing lines, processing plants, and facilities with 480 V three-phase power
• Maintenance programs requiring a reliable, field-ready bucket that aligns with existing Marq 21 configurations
• Spare parts strategy for critical MCC assets to minimize downtime during repairs

Practical benefits and outcomes

Choosing this bucket means you’re working with a module designed for compatibility and straightforward installation within Siemens Marq 21 MCCs. Expect predictable electrical interfaces, a cohesive fit with your existing protective devices and wiring schemes, and a faster path from order to uptime. AmpState backs this solution with global availability, ensuring you can source a reliable replacement part when you need it most.

Who should consider this part

Maintenance engineers, plant managers, system integrators, and OEMs who operate Siemens Marq 21 motor control centers and require a dependable, ready-to-install MCC bucket that supports a 300 A, 480 V, 3-Pole configuration.

With the Siemens Marq 21 Breaker MCC Bucket from AmpState, you’re not just stocking a component—you’re securing a compatible, retrofit-ready solution designed to keep your critical motor loads protected and your downtime minimized.