Schneider Electric (Square D) SDSA3650 480/277V 3-Phase Surge Protector

Description

The Schneider Electric (Square D) SDSA3650 is a heavy-duty, three-phase surge protective device (SPD) engineered to safeguard commercial and industrial HVAC systems, motors, and electrical equipment from destructive transient voltage events. Designed for 480/277V three-phase electrical systems, this unit provides robust protection against lightning strikes, utility switching surges, and internally generated transients that can degrade or destroy sensitive HVAC controls, variable frequency drives, motors, and other connected equipment.

Installing a quality surge protector like the SDSA3650 is a proven strategy to extend equipment life, reduce unplanned downtime, and lower maintenance costs — making it an essential component in any commercial HVAC or building electrical system.

Key Features

• Rated for 480/277V three-phase electrical systems
• Protects all modes: line-to-line, line-to-neutral, and line-to-ground
• Designed to suppress damaging voltage transients from lightning, utility switching, and load switching
• Engineered for commercial and industrial HVAC and electrical applications
• Schneider Electric (Square D) quality construction for long-term reliability
• Helps extend the service life of motors, VFDs, control boards, and other sensitive equipment
• Supports reduced maintenance costs and minimized system downtime

Application

The SDSA3650 is ideal for use in commercial buildings, light industrial facilities, and mechanical rooms where 480/277V three-phase power distribution is present. It is well-suited for protecting HVAC rooftop units, air handling units, chillers, boiler controls, and associated electrical panels from surge damage.

Why Choose Schneider Electric (Square D)?

Schneider Electric’s Square D brand is a globally recognized leader in electrical distribution and power management. Square D surge protective devices are trusted by electrical contractors and HVAC professionals for their durability, compliance with industry standards, and consistent performance in demanding environments.