Siemens - Marq 21 - Breaker MCC Bucket - 300 A, 240 V, 24" Height, 3 P | AmpState

Engineered for demanding industrial motor control environments, the Siemens Marq 21 Breaker MCC Bucket offers a precise 300 A, 240 V, 3-Pole protection module that plugs directly into the Siemens Marq 21 MCC lineup. Designed for OEM replacement and retrofit projects, this bucket preserves the original control architecture while delivering dependable protection for critical motor loads.

• Exact compatibility: Fits seamlessly within the Siemens Marq 21 MCC configurations, ensuring correct mounting, wiring, and interlock alignment.
• Electrical rating: 300 A, 240 V, 3-Pole to match standard motor control center protection schemes and downstream equipment.
• Form factor: 24" bucket height to align with standard MCC rack dimensions, enabling straightforward installation without cabinet redesign.
• OEM replacement and retrofit ready: Ideal for upgrading aging MCCs or expanding capacity while preserving original system characteristics.
• Reliable protection: Maintains consistent motor protection and feeder circuit integrity in busy industrial environments.
• Authentic Siemens component: Part of the reputable Marq 21 family, ensuring compatibility with other Siemens breakers and control hardware.
• Global availability: Supplied through AmpState, offering authentic Siemens MCC components with worldwide support.

Who needs this bucket? Plant engineers, system integrators, OEMs, and maintenance teams responsible for mid- to large-scale motor control centers where downtime is costly and reliability matters. If your existing Marq 21 assembly requires a dedicated, drop-in 300 A, 240 V, 3-Pole MCC bucket, this part preserves protection coordination and electrical characteristics without a full panel rewrite.

Use scenarios include upgrading legacy MCCs in manufacturing lines, retrofitting new protective devices to existing motors, or stocking a genuine Siemens replacement bucket for planned maintenance. The 24" height ensures compatibility with standard rack layouts, allowing you to replace worn components quickly and confidently.

Compared to generic alternatives, this Marq 21 bucket is purpose-built for the Marq 21 line, delivering exact mounting points, interlock compatibility, and expected protection performance. That means fewer installation surprises and better long-term serviceability.

Installation should be performed by qualified personnel following your facility’s safety procedures. Verify that the bucket’s ratings align with your protection scheme and coordinate with upstream breakers and feeders to maintain proper short-circuit protection and selective coordination.

Trust AmpState for authentic Siemens MCC components and worldwide support. The Siemens Marq 21 Breaker MCC Bucket — 300 A, 240 V, 24" (3-Pole) — is built to keep your motor control centers up and running with precision and reliability.