Siemens tiastar - Breaker MCC Bucket - 400 A, 480 V, 42" Height, 3 P | AmpState

Engineered for industrial motor control centers, the Siemens tiastar Breaker MCC Bucket delivers a precise 400 A, 480 V, 3-Pole configuration in a 42-inch footprint. This unit is designed to slot into Siemens tiastar MCC systems as a direct OEM replacement, simplifying retrofits and upgrades without compromising electrical coordination or enclosure integrity.

Key specifications at a glance

• Configuration: Breaker MCC Bucket, 3-Pole
• Rating: 400 A, 480 V
• Height: 42 inches
• Compatibility: Siemens tiastar MCC systems (direct OEM replacement)
• Application: Retrofit or new-install motor control centers

Who benefits: maintenance teams, plant engineers, and electrical contractors responsible for industrial facilities with 3-phase motors and heavy loads. This MCC bucket supports reliable motor starter protection, feeder coordination, and streamlined wiring within the tiastar platform, helping minimize downtime during replacements and upgrades.

Why this matters in practice: a direct-fit replacement eliminates guesswork in mounting, terminal layouts, and bus connection alignment. You preserve existing protective relays and control sequences, while ensuring the MCC enclosure remains aligned with Siemens' design intent. The 42-inch height matches common tiastar configurations, enabling a drop-in replacement without modifying rack frames.

AmpState value: genuine Siemens tiastar MCC components with global delivery. When you order this Breaker MCC Bucket from AmpState, you’re choosing a partner known for consistent sourcing and on-time shipping to facilities worldwide, helping you keep projects on schedule.

Practical tips and best uses

• Confirm system voltage and 3-phase availability (480 V) before replacement.
• Power down, lock out/tag out, and verify alignment of the bus and mounting rails with the tiastar frame.
• Plan retrofits alongside accessories and protective devices to maintain correct trip curves and coordination.
• Consider this bucket as part of a broader upgrade to improve reliability of motor-driven lines and reduce unplanned downtime.