Siemens MXD63H800 - 800 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens MXD63H800 is a high-capacity, three‑pole bolt‑on molded case circuit breaker engineered to safeguard demanding electrical systems. With an 800 A current rating and a 600 V maximum voltage, this rugged device delivers precise branch-circuit overcurrent and short-circuit protection in panelboards and loadcenters where reliability matters most. Key advantages that set the MXD63H800 apart - Secure bolt-on mounting for a rigid, vibration‑resistant bus connection, ensuring consistent electrical contact even in environments with movement or vibrations. - Thermal‑magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with magnetic instantaneous trip for fast response to short circuits. - OEM‑level compatibility with matching Siemens load centers and panelboards, enabling straightforward replacements or upgrades without compromising fit or protection characteristics. - Versatile for residential, commercial, and light industrial applications, making it a practical choice for large feeders, subpanels, and critical circuits. Technical snapshot - Model: Siemens MXD63H800 - Type: Thermal‑magnetic molded case circuit breaker - Amperage Rating: 800 A - Voltage Rating: 600 V - Number of Poles: 3 - Mounting Style: Bolt-on - Application: Branch circuit overcurrent and short‑circuit protection Ideal use scenarios - Upgrading service panels or load centers that demand higher current capacity for feeders and subpanels. - Protecting large motor circuits and high‑demand equipment in light industrial or commercial settings. - Retrofitting existing installations where secure, vibration‑resistant connections reduce nuisance trips and maintenance. - Replacing worn breakers in Siemens‑equipped panelboards with a compatible, high‑ampacity solution. Why choose this Siemens breaker over alternatives - The bolt-on design is purpose-built to resist loosening and maintain a solid bus connection in installations subject to vibration or movement. - The thermal‑magnetic trip mechanism provides a dual-layer protection strategy, reducing the risk of damage from both overload conditions and sudden faults. - OEM compatibility means fewer compatibility checks, predictable trip curves, and a reliable fit in Siemens‑brand panelboards and load centers. Practical considerations and tips - Confirm the panelboard or load center model is designed for a 3‑pole, bolt‑on breaker to ensure proper mechanical engagement and electrical performance. - When upgrading from a lower‑ampacity breaker, plan for conductor sizing and protective device coordination to maintain system protection and safety. - For installations in environments with frequent vibration, the MXD63H800’s mounting design helps maintain consistent performance over time. With the Siemens MXD63H800, you get a purpose‑built, 800 A, 600 V, 3‑pole bolt‑on breaker that combines robust mechanical integrity with dependable thermal‑magnetic protection—a strong, future‑ready choice for panelboards and load centers in residential, commercial, and light industrial settings.