Square D PS3620 - 200A, 600V, Fusible, Switch

Meet the Square D PS3620 — a rugged 200A, 600V fusible switch built to deliver reliable on/off isolation and precise overcurrent protection in demanding industrial and commercial environments. Designed to keep critical electrical systems safe and operational, this switch consolidates disconnect capability with integrated protection in a compact, maintainable package.

Key to its value is a compact form that fits where space is at a premium without sacrificing performance. The PS3620 is a purpose-built solution for installations that require a dedicated motor disconnect, dependable panelboard protection, or dedicated branch-circuit safeguarding, all in a single, easy-to-service unit. Its fusible design ensures selective protection and clear fault indication, helping you minimize downtime and protect downstream equipment.

Key specifications

• Model: PS3620
• Amperage: 200A
• Voltage: 600V
• Fused: Fusible

Practical applications and benefits

• Motor disconnects: Provide a clean, unambiguous isolation point for motors during maintenance or fault conditions, improving safety and service access.
• Panelboards: Centralize protection at the point of distribution, helping simplify wiring and enhance protection coordination across feeders.
• Branch circuits: Protect individual branches with a dedicated fusible switch, reducing risk to upstream equipment and improving fault handling.
• Compact, maintainable design: A space-efficient solution that technicians can service without dismantling surrounding equipment, keeping downtime to a minimum.

Why this matters: in real-world installations, having a single, clearly rated fusible switch for isolation and protection minimizes wiring complexity and provides a straightforward path to safe maintenance and reliable operation. The Square D PS3620 combines proven performance with practical usability, making it a smart choice for facilities managers, electrical contractors, OEMs, and engineers responsible for reliable power distribution in factories, warehouses, campuses, and commercial spaces.

Maintenance and safety tips: establish a routine to inspect fuse status and enclosure integrity, and always follow your facility’s electrical maintenance procedures when servicing fusible switches. Use only the appropriate PS3620-rated fuses as specified for your installation to ensure consistent protection and reliable performance.