Square D TEF10 - 100A, Disconnect Switch

Square D TEF10 is a robust 100A disconnect switch engineered for industrial and commercial environments where safe electrical isolation is non-negotiable. This model delivers dependable disconnection under load and supports proper lockout/tagout (LOTO) procedures, helping maintenance teams keep workplaces safe during servicing, testing, or repair work.

• 100A electrical isolation suitable for feeders, motors, and branch circuits, providing a clear and controlled disconnect when needed.
• LOTO-ready design accommodates standard lockout devices and tags, simplifying adherence to safety protocols during maintenance.
• Rugged, durable construction built for daily operation in demanding environments, resistant to wear from frequent switching and exposure to challenging conditions.
• Reliable performance under load engineered to maintain stable interruption of current, reducing the risk of arcing or unexpected re-energization during service.
• Long-term, low-maintenance life designed to endure extended service with minimal upkeep, helping minimize downtime and keep operations moving.

The TEF10 is an ideal choice for facilities managers, electrical contractors, and maintenance teams seeking a dependable isolation point within panels, switchgear, or feeder configurations. Its 100A rating makes it well-suited for mid-scale equipment and processes, offering a clear, safe path to shutdown and restart without compromising system availability.

Key use cases

• Maintenance shutdowns for conveyors, pumps, fans, and other industrial equipment
• Emergency isolation to secure a line during faults or investigations
• Scheduled safety testing and lockout/tagout procedures
• Retrofit installations where a proven 100A disconnect is required in existing panels or switchgear

With the Square D TEF10, you gain more than a switch—you gain a safety-focused solution that integrates with your electrical safety program. Its 100A rating, rugged construction, and LO TO-ready design offer reliable performance for both new installations and upgrades, helping protect workers while keeping production on track.