Westinghouse | MC3800WK | Circuit Breaker | 800A | 3-Pole | 600V | Bolt-On

Meet the Westinghouse MC3800WK Circuit Breaker — a purpose-built safeguard for demanding 3‑phase power. Designed for maintenance, retrofit, and replacement projects where precise compatibility matters, this 800A, 3‑pole, 600V bolt‑on breaker delivers dependable protection for industrial and commercial electrical systems.

Key specifications

• Amperage: 800A
• Poles: 3‑Pole
• Voltage rating: 600V
• Mounting: Bolt‑On
• Reference: Part number MC3800WK

Why this breaker stands out

• High‑current protection for heavy load circuits: The 800A rating is built to handle substantial demands in 3‑phase systems, helping to prevent damage from overloads and faults.
• Secure bolt‑on mounting: The bolt‑on design provides a robust, vibration‑resistant connection crucial for equipment rooms and industrial environments.
• Clear compatibility reference: The MC3800WK is your best reference for matching fit and ratings, streamlining retrofits and replacements in compatible panels.
• 600V readiness: Suitable for a wide range of commercial and industrial distribution applications that operate at or below 600V.

Ideal use cases

• Maintenance of aging panels where a direct 3‑pole, 800A, 600V bolt‑on breaker is required.
• Retrofit projects upgrading protection in existing 3‑phase electrical systems without changing panel architecture.
• Replacement scenarios where the MC3800WK matches the panel’s original specifications and labeling for safe, compliant operation.

Practical guidance for installation and selection

Before ordering, confirm fit and ratings to ensure a seamless replacement. Use the MC3800WK part number as the primary reference to verify compatibility with your panel’s bus configuration and mounting provisions. When planning installation, align the breaker with the panel’s 3‑phase distribution layout and ensure the bolt‑on hardware engages securely for steady operation under electrical load.

Whether you're conducting routine maintenance, planning a retrofit to support higher downstream demand, or replacing an aging unit, the Westinghouse MC3800WK delivers reliable, high‑current protection with a straightforward path to compatibility.