Siemens - Marq 21 - Breaker MCC Bucket - 400 A, 480 V, 24" Height, 3 P | AmpState

Engineered for industrial motor control centers, the Siemens Marq 21 Breaker MCC Bucket delivers reliable, mission-critical performance in a compact 24" height. Designed specifically for the Siemens Marq 21 MCC lineup, this 400 A, 480 V, 3-Pole bucket is ideal for OEM replacement and retrofit projects, helping you modernize existing cabinets without a full system rebuild.

Key specifications

• Brand: Siemens
• Series: Marq 21
• Configuration: Breaker MCC Bucket
• Current rating: 400 A
• Voltage: 480 V
• Poles: 3-Pole
• Bucket height: 24 inches
• Compatibility: Part of the Siemens Marq 21 MCC lineup; suitable for OEM replacement and retrofit

What makes it unique

• Exact fit for Marq 21 frames ensures secure mounting, aligned bus bars, and straightforward integration with existing equipment.
• High-demand performance supports large motors, pumps, conveyors, and other heavy loads common in industrial settings.
• OEM replacement and retrofit ready minimizes downtime and preserves system integrity when upgrading or modernizing your MCC.
• Authentic Siemens component delivered through AmpState’s global network, providing reliability and traceability for spare parts and service.

Ideal applications

• Manufacturing floors and processing plants where robust motor control is essential
• Industrial drives, conveyors, and large pump and HVAC systems
• OEM equipment upgrades or refurbishments in existing facilities

Installation and compatibility guidance

When planning an upgrade or replacement, confirm the bucket will couple cleanly with your existing Marq 21 MCC assembly. Verify the 24" height fits within your cabinet clearance, and ensure mounting hardware and bus bar connections align with your current configuration. Follow standard safety and lockout/tagout procedures during installation to maintain a safe, reliable power distribution solution.

Why AmpState

AmpState supplies Siemens MCC components worldwide, providing access to authentic Marq 21 parts and clear support for OEM replacements and retrofits. For facilities upgrading their motor control infrastructure, this Breaker MCC Bucket combines Siemens engineering with AmpState serviceability to help you achieve dependable operation and easier long-term maintenance.