Siemens - Marq 21 - Breaker MCC Bucket - 100 A, 480 V, 12" Height, 3 P | AmpState

Engineered for Siemens Marq 21 motor control centers, the Siemens - Marq 21 Breaker MCC Bucket from AmpState is a purpose-built replacement that keeps critical machinery running with precision-fit performance. Rated for 100 A at 480 V across a 3-pole configuration, this bucket measures 12 inches in height to align with standard Marq 21 sections.

Direct OEM compatibility for OEM replacement and retrofit

Designed to drop straight into existing Marq 21 MCC frames, this bucket preserves the original bus-bar spacing and connection points, minimizing rework during maintenance or plant upgrades. It’s the same Siemens specification as the original part, enabling seamless retrofits without modifying panel interiors.

Key specifications

• Brand: Siemens
• Series: Marq 21
• Configuration: Breaker MCC Bucket
• Rating: 100 A, 480 V, 3-Pole
• Bucket Height: 12"
• Application: OEM replacement and retrofit for Marq 21 MCCs

Practical use cases

• Replacing a failed MCC bucket in aging Marq 21 panels to restore full three‑phase motor control capability
• Retrofit projects upgrading motor loads to a 100 A, 480 V three‑phase configuration within existing Siemens MCC infrastructure
• Stocking spare buckets for service fleets that support Siemens Marq 21 MCC lineups
• OEM replacement during plant modernization where exact fit and electrical tolerances matter

Why this matters

With exact-fit geometry and factory-aligned terminals, you can shorten commissioning time and reduce downtime. The 3‑pole design ensures consistent performance across three‑phase motor loads, while the 480 V rating supports demanding industrial applications such as conveyors, pumps, compressors, and processing lines.

Who benefits

Maintenance engineers, plant managers, system integrators, and OEMs responsible for Siemens Marq 21 MCCs will appreciate a reliable, field-proven replacement part that stays true to the original design and electrical tolerances.

About AmpState

AmpState supplies high‑quality Siemens MCC components worldwide, delivering authentic parts and dependable availability to support uptime-critical operations.