Eaton LW3630WK - 630 A, 690 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Eaton LW3630WK—a 630 A, 690 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for demanding environments, this bolt-on unit pairs rugged mounting with precise protection to keep large electrical systems safe and running smoothly.

Key advantages that matter in real-world installations

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing loosening risk in equipment that experiences movement or vibration and helping maintain consistent electrical performance over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overload and short-circuit conditions, helping safeguard downstream equipment and improve system reliability.
• Three-pole design ensures balanced protection across all phases in 3‑phase systems, essential for commercial and light industrial loads.
• High-capacity ratings—630 A at 690 V—suited for heavier branch circuits in panelboards and loadcenters, enabling more efficient distribution of electrical demand.
• OEM-compatible design works with matching OEM panels, ensuring proper fit, alignment, and performance without aftermarket guesswork.

Ideal applications and practical use cases

Designed for residential, commercial, and light industrial environments, the LW3630WK protects critical feeders and distribution paths in panelboards and loadcenters. It’s an excellent choice when you need robust protection for substantial 3-phase loads, including machine rooms, electrical rooms, and service entrances where reliable current limiting and fast fault interruption are essential.

Why this breaker stands out

Beyond basic specs, the LW3630WK offers tangible advantages:

• Durable, purpose-built construction for environments where vibration, temperature swings, and frequent switching can challenge less robust devices.
• Clear compatibility pathway with OEM panels means fewer compatibility surprises during upgrades or replacements, reducing downtime and installation questions.
• Clear protection boundaries with a thermal-magnetic trip curve that responds proportionally to overloads while providing an immediate magnetic trip for dangerous short-circuit events, helping protect conductors and connected equipment.

Technical snapshot

Manufacturer: Eaton
Part Number: LW3630WK
Type: Thermal-magnetic molded case circuit breaker
Amperage Rating: 630 A
Voltage Rating: 690 V
Number of Poles: 3
Mounting Style: Bolt-on
Application: Branch circuit overcurrent and short-circuit protection

With the Eaton LW3630WK, you’re choosing a high-capacity, reliability-focused solution built to protect substantial electrical systems while fitting seamlessly into compatible panelboards and loadcenters. This is protection designed for performance, compatibility, and peace of mind in demanding 3-phase applications.