Siemens - Marq 21 - Breaker MCC Bucket - 250 A, 480 V, 36" Height, 3 P | AmpState

Siemens Marq 21 Breaker MCC Bucket – a purpose-built, 250 A, 480 V, 3-Pole solution engineered for demanding industrial motor control environments. This MCC bucket is designed to integrate seamlessly with the Siemens Marq 21 MCC lineup, delivering a reliable, OEM-compatible option for both original equipment manufacturing (OEM) replacements and retrofit projects.

Key specifications at a glance

• Configuration: Breaker MCC Bucket, 3-Phase
• Current rating: 250 A
• Voltage rating: 480 V
• Bucket height: 36 inches
• Compatibility: Siemens Marq 21 MCC lineups (OEM replacement and retrofits)

Why this bucket matters for your facility

• Direct compatibility with Marq 21: Purpose-built for Siemens MCC panels, reducing the risk of fitment issues and minimizing downtime during upgrades or replacements.
• Robust protection for industrial motors: The 250 A, 480 V, 3-Pole configuration is ideal for medium to large motor applications, providing reliable protection and coordinated operation within your control system.
• Retrofit-ready and OEM-focused: Perfect for upgrading aging MCCs or replacing failed components without a full panel overhaul, preserving wiring layouts and control logic.
• Consistent performance in harsh environments: Built to withstand the rigors of industrial settings, helping keep critical processes up and running.

Ideal use cases

• Industrial facilities with heavy motor loads—pumps, conveyors, fans, and compressors—that require a dependable 250 A, 480 V, 3-Pole MCC bucket.
• OEM replacements for aging Siemens Marq 21 MCC assemblies, ensuring continuity with existing protection schemes and control architectures.
• Retrofit projects where downtime and reconfiguration risk must be minimized while preserving system performance.

Installation and compatibility guidance

The Marq 21 Breaker MCC Bucket is designed to slot into Siemens Marq 21 configurations, providing a straightforward path for OEM replacement or retrofit without extensive rewiring. When deploying, verify panel compatibility and ensure your protective coordination (fusing, breakers, and control wiring) aligns with the 250 A, 480 V, 3-Pole ratings to maintain proper safety and performance margins.

Practical tips for maximum reliability

• Confirm exact Marq 21 model variant and mounting dimensions before installation to ensure a smooth fit.
• Plan for a controlled downtime window to complete retrofits, reducing impact on continuous operations.
• Coordinate protection settings with downstream devices to maintain proper selectivity and minimize nuisance tripping.
• Inspect associated MCC components (bus connections, terminal blocks, and protective devices) to ensure integrity post-installation.

Why AmpState

AmpState supplies high-quality Siemens MCC components worldwide, offering dependable parts for critical industrial infrastructure. This Marq 21 Breaker MCC Bucket embodies AmpState’s commitment to authenticity, durability, and timely availability for engineers and technicians focused on reliability and uptime.