Eaton - Westinghouse 11-300 - Breaker MCC Bucket - 100 A, 480 V, 18" Height, 3 P | AmpState

The Eaton Westinghouse 11-300 Breaker MCC Bucket is engineered to drop into existing 11-300 motor control centers, delivering a dependable, code-conscious breaker stage for demanding industrial power distribution. With a 100 A rating at 480 V three-phase (60 Hz), this bucket is purpose-built for continuous motor control performance in manufacturing floors, processing plants, and commercial facilities.

• Amp rating: 100 A
• Voltage: 480 V (Three-phase, 60 Hz)
• Height: 18"
• Poles: 3 P
• Type: Breaker MCC Bucket
• Compatibility: designed for Eaton - Westinghouse 11-300 frames
• Applications: Industrial motor control, retrofit, OEM replacement, and custom MCC configurations

Why this MCC bucket matters

Designed to align with the exact mechanical and electrical interface of the 11-300 family, this breaker bucket preserves bus bar connections, interlocks, and mounting points. The 18" vertical frame fits standard MCC rack spacing, enabling straightforward retrofits without reworking the entire control center. A precise 100 A at 480 V capacity supports common motor starters and feeders while maintaining appropriate protection for energized loads.

Ideal use cases

• Retrofit aging or obsolete MCC buckets within existing Eaton Westinghouse 11-300 installations
• OEM replacement to minimize downtime when a bucket assembly fails or wears out
• Custom MCC configurations for mid-sized motor loads in conveyors, pumps, fans, compressors, and processing lines

Installation and compatibility tips

Ensure the replacement bucket matches the exact 11-300 frame and bus-bar layout. Verify mounting holes, interlock interfaces, and protective covers align with your current MCC. Follow standard lockout/tagout procedures during installation and use manufacturer-specified torque on all mounting hardware. Keep a compatible spare bucket on hand to reduce downtime during maintenance or upgrades.

Maintenance and longevity

Regular visual inspections for signs of wear, corrosion, or arcing are recommended. Keep connectors clean and tight, and shield the bucket from excessive dust and moisture in harsh environments. Periodic functional checks help confirm continuity and reliable operation of the 3-pole, 100 A circuit protection path within your motor control center.

Unique value proposition

This MCC bucket isn’t a generic replacement piece. It’s purpose-built for the Eaton Westinghouse 11-300 ecosystem, ensuring exact fit, seamless interlock engagement, and predictable performance that aligns with your existing MCC tooling and spare parts strategy. The combination of precision fit, robust 100 A/480 V capability, and a compact 18" frame makes it a practical, future-ready choice for industrial power distribution and motor control.

If you’re upgrading an Eaton Westinghouse 11-300 system or provisioning OEM replacements, this Breaker MCC Bucket delivers reliable, plug-and-play compatibility with the practical flexibility needed for retrofit projects and custom MCC configurations.