Square D - 40A, 690V, 3-Pole, Disconnect Switch

The Square D 40A, 690V, 3-Pole Disconnect Switch is built for decisive, reliable electrical isolation in demanding industrial and commercial environments. Designed to support proper lockout/tagout procedures, it provides a clear, safe disconnect under load, helping protect personnel during maintenance and reducing the risk of unexpected energization. Durable by design, this switch is built to withstand the rigors of ongoing daily use in challenging electrical rooms and on factory floors.

• Amperage rating: 40 A
• Voltage rating: 690 V
• Poles: 3-Pole
• Product type: Disconnect Switch
• Brand: Square D

Who it’s for
Maintenance teams, electrical contractors, facilities engineers, and plant operators responsible for safe power isolation in motor control centers, service panels, feeders, and other three-phase systems.

Why this disconnect stands out
- Robust, industrial-grade construction designed for long-term durability in harsh environments. - Precise, dependable disconnection under load, reducing downtime and enabling safe maintenance without compromising performance. - Built to support lockout/tagout (LOTO) workflows, making compliance effortless and safer for workers performing routine servicing or emergency interventions. - Clear, straightforward operation with three poles ensures full isolation of three-phase circuits, improving arc-flash prevention and system safety during service windows.

Practical use cases

• Isolating three-phase motors and conveyors for maintenance or repair work
• Isolating feeders in electrical rooms and service panels to satisfy LOTO requirements
• Emergency shutdown circuits and process isolation in industrial facilities
• Temporary or permanent disconnection points in commercial electrical installations

What to know when planning installation
This disconnect switch is suitable for integration into standard industrial electrical layouts where 3-pole isolation is required. It supports safe operation in environments where quick, reliable de-energization is essential for protecting personnel and equipment. For best results, pair with proper enclosure ratings and a compliant lockout/tagout procedure to maximize safety and uptime.

Choose the Square D 40A, 690V, 3-Pole Disconnect Switch for a trusted, purpose-built solution that delivers enduring performance, straightforward operation, and reinforced safety for everyday industrial and commercial electrical isolation needs.