Square D | HU664RWK | Disconnect Switch | 200A | 600V

Meet the Square D HU664RWK Disconnect Switch — a purpose-built isolation solution designed to safely interrupt and isolate electrical circuits in demanding maintenance, retrofit, and replacement scenarios. With a robust 200A current rating and a 600V maximum, this unit is engineered to keep service work efficient and controlled, even in busy industrial environments.

Key specifications at a glance

• Amperage: 200A
• Voltage: 600V
• Part number: HU664RWK
• Best reference for compatibility: The HU664RWK part number
• Recommended use: Maintenance, retrofit, and replacement where matching specs are required
• Important note: Confirm fit and ratings before ordering

Why this Square D disconnect switch stands out

• Genuine, purpose-built reliability — manufactured as part of the Square D HU series, this disconnect switch is designed to deliver consistent performance in electrical panels and distribution circuits.
• Precise compatibility — the HU664RWK designation is your best reference for matching enclosures and upstream/downstream connections, reducing guesswork in replacements and retrofits.
• Safety-first isolation — optimized for clean, decisive disconnection, helping maintenance teams perform tasks with minimal exposure to live circuits.
• Retrofit-ready and replacement-friendly — specifically suited for upgrading aging switches in 200A, 600V systems, with fewer modification requirements and faster project timelines.
• Durability you can trust — built to withstand routine operation cycles in demanding environments, providing a dependable service disconnect over the long term.

Ideal applications and use cases

• Maintenance outages for electrical panels and feeders in commercial or industrial facilities
• Retrofits where existing disconnects no longer meet capacity or safety standards
• Replacement of worn or failing switches in 200A, 600V circuits
• New installations requiring a reliable, code-compliant service disconnect with known compatibility

Fit, compatibility, and practical considerations

Before ordering, verify that the HU664RWK matches your equipment’s specifications. The best reference for compatibility is the part number itself, ensuring the disconnect switch aligns with your enclosure, wiring configurations, and system voltage. If you’re upgrading or replacing an older unit, use the HU664RWK as the cornerstone reference to minimize downtime and ensure a seamless swap.

Whether you’re an electrical contractor, facilities manager, or maintenance technician, this Square D disconnect switch offers a precise, reliable path to safe circuit isolation and efficient project execution. Ready to equip your next service outage or retrofit with a trusted disconnect? The HU664RWK delivers the performance and compatibility you need for confident, compliant electrical work.