Siemens - Marq 21 - Breaker MCC Bucket - 30 A, 480 V, 12" Height, 3 P | AmpState

Siemens Marq 21 Breaker MCC Bucket is engineered for demanding industrial motor control centers, delivering reliable protection and precise compatibility in a compact 12" form factor. Designed for a 30 A, 480 V, 3-Pole configuration, this bucket is the ideal OEM replacement and retrofit solution for Siemens Marq 21 MCC lineups.

• Brand: Siemens
• Series: Marq 21
• Configuration: Breaker MCC Bucket
• Rating: 30 A, 480 V, 3-Pole
• Bucket Height: 12"

Why this Marq 21 Breaker MCC Bucket stands out

• Precise OEM fit for Marq 21 MCC systems: Engineered to align perfectly with the Marq 21 architecture, ensuring seamless mounting, bus-bar alignment, and interlock compatibility without custom fabrication.
• Reliable retrofit and OEM replacement: Perfect for updating aging MCCs or upgrading to Siemens components, minimizing downtime and preserving protective coordination.
• Compact, durable design for harsh environments: Built to withstand industrial conditions while occupying a standard 12" bucket footprint, making it suitable for a wide range of enclosures.
• Clearance and protection benefits: Maintains proper spacing and protection for a 3-pole 30 A, 480 V motor circuit, supporting consistent startup and overload protection in demanding applications.

Ideal use scenarios

This MCC bucket is perfect for plants and facilities that rely on Siemens Marq 21 motor control centers. Use cases include OEM equipment assemblies, maintenance-driven replacements in aging MCCs, and retrofits that aim to preserve legacy protection schemes while upgrading to current Siemens components. If your operation uses three-phase motors around 30 A in a 480 V environment, this bucket helps keep the system performing reliably with the trusted Siemens Marq 21 design.

Practical benefits and outcomes

• Streamlined maintenance planning: With a genuine Siemens bucket, spare parts alignment and service procedures stay consistent across multiple MCCs, reducing confusion during repairs.
• Operational continuity: Drop-in compatibility minimizes commissioning time, helping facilities stay productive during modernization cycles.
• Global support and availability: AmpState supplies Siemens MCC components worldwide, supporting timely procurement and logistics for global operations.

Installation and compatibility tips

• Verify that the enclosure and mounting pattern match the Marq 21 bucket dimensions to ensure a clean fit.
• Cross-check wiring interfaces and trip unit accessibility to maintain straightforward electrical connections and safe maintenance access.
• Follow standard safety practices during replacement, including lockout/tagout procedures and energy disconnection prior to handling the MCC bucket.
• Consult existing electrical diagrams to preserve protective coordination and ensure compatible accessories remain in place during retrofit.

AmpState supplies high-quality Siemens MCC components worldwide, providing dependable access to authentic parts for OEM and retrofit projects. If you’re rebuilding or upgrading a Siemens Marq 21 MCC lineup, this Breaker MCC Bucket delivers precise fit, reliable protection, and proven performance for demanding industrial motor control applications.