Siemens - Marq 21 - Breaker MCC Bucket - 300 A, 600 V, 15" Height, 3 P | AmpState

Designed for demanding industrial motor control centers, the Siemens Marq 21 Breaker MCC Bucket delivers dependable, mission‑critical protection for large three‑phase systems. With a 300 A, 600 V rating in a compact 15" form factor and a 3‑pole configuration, this MCC bucket slips seamlessly into Siemens Marq 21 assemblies for streamlined integration and reliable performance.

Key capabilities that matter in the field

• 300 A, 600 V, 3‑Pole configuration provides robust protection for large motors, conveyors, pumps, and process equipment.
• 15" bucket height matches standard Marq 21 rack dimensions, simplifying retrofits and OEM replacements.
• Breaker MCC Bucket design—engineered specifically for motor control centers, ensuring secure bus connections and consistent trip behavior.
• OEM replacement and retrofit readiness — built to slot into existing Marq 21 lineups, reducing engineering effort and downtime during upgrades.
• Part of the Siemens Marq 21 family— ensures compatibility with companion components, accessories, and control schemes within the same ecosystem.

Why this matters for your operation

When uptime and reliability are non‑negotiable, you need replacement MCC buckets that align perfectly with your original design. This Siemens Marq 21 bucket delivers consistent electrical performance, predictable maintenance intervals, and straightforward installation—minimizing retrofit risk and maximizing system availability. By choosing an OEM‑aligned bucket, you preserve coordination with protective relays, control wiring schemes, and ancillary components, so your motor control center behaves as intended under load.

Ideal use cases

• Upgrading aging MCCs in manufacturing lines, cooling loops, and process plants where large motors operate continuously.
• OEM replacement projects where a direct Marq 21 fit is required to maintain documented electrical schematics and service procedures.
• Retrofit initiatives aimed at standardizing protection across multiple production cells without redesigning control architectures.

Specifications at a glance

• Brand: Siemens
• Series: Marq 21
• Configuration: Breaker MCC Bucket
• Rating: 300 A, 600 V, 3‑Pole
• Bucket Height: 15 inches

Why AmpState

AmpState supplies high‑quality Siemens MCC components worldwide, offering provenance you can trust and global availability for critical maintenance timelines. Whether you’re replacing a failed bucket or equipping a new line, AmpState helps keep your motor control strategy cohesive and dependable.