Square D HU363AWK 100A 3P 600V Safety Switch, NEMA 3R, Fusible, Non-Fusible | AmpState

The Square D HU363AWK safety switch is built for everyday electrical work, serving as a dependable equipment disconnect and isolation point at the use site. Designed with retrofit and maintenance planning in mind, this 3-pole switch keeps your part numbers consistent while delivering reliable performance when you need it most.

Overview

Engineered for robust service in demanding environments, the HU363AWK combines a 100 A rating with 3 poles and a 600 V capacity, making it a versatile solution for three‑phase systems. Its NEMA 3R enclosure provides weather resistance suitable for outdoor or harsh indoor settings, so you can rely on safe, accessible power control wherever your equipment operates.

Key Benefits

• 3-pole safety switch supports three-phase circuits up to 600 V for motors, conveyors, pumps, and other industrial equipment.
• 100 A rating offers solid control over mid‑ to heavy‑duty loads with straightforward, serviceable isolation.
• NEMA 3R enclosure protects the disconnect in outdoor environments, rain or shine, while maintaining accessible control points for maintenance crews.
• Fusible and non-fusible configuration provides flexible field options, reducing inventory and simplifying retrofits without changing the part number.
• Point-of-use isolation enables safe servicing, troubleshooting, and routine maintenance without pulling power from upstream sources.
• Retrofit-friendly design supports upgrades and replacements while preserving existing installation footprints and part numbers for consistent maintenance planning.

Use Cases and Who It’s For

Ideal for electricians, maintenance engineers, and facilities managers who need a reliable, easy-to-service disconnect at the point of use. Common applications include:

• Outdoor and semi‑exposed equipment stations on three‑phase systems
• Retrofit projects where maintaining the same part number simplifies ordering and field service
• Maintenance windows for motors, fans, pumps, and HVAC equipment that require quick, safe power isolation
• Industrial installations where a durable, weather‑rated safety switch is essential for compliance and safety protocols

Why Choose This Safety Switch

Square D is a trusted name in industrial electrical protection, and the HU363AWK brings that reliability to a practical, field-ready disconnect. Its combination of a rugged NEMA 3R enclosure, 100 A capacity, and dual fusible/non-fusible configuration sets it apart from generic switches by delivering flexibility, longevity, and a smoother maintenance cycle—without having to reorder different part numbers for each service scenario.

Specifications at a Glance

• Part Number: HU363AWK
• Amperage: 100 A
• Poles: 3
• Voltage: 600 V
• Enclosure: NEMA 3R
• Configuration: Fusible / Non-Fusible (convertible in the field)
• Type: Safety switch for equipment disconnect and isolation

Available from AmpState, this HU363AWK is ready to support your maintenance plans and retrofit projects. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.