The Intermatic T7401BC is a heavy-duty 7-day mechanical time switch designed for complex industrial and commercial load control. This 4PST electromechanical timer operates on a 120V 60Hz input, providing independent control over four separate circuits. Built with a type 3R metal enclosure, it is rated for both indoor and outdoor installations, ensuring protection against rain and sleet. A critical feature for mission-critical applications is the mechanical carry-over battery backup, which maintains the dial timing for up to 16 hours during power interruptions, eliminating the need for manual recalibration. The 7-day dial allows for distinct on/off scheduling every 24 hours, making it ideal for HVAC systems, lighting arrays, and motor loads where weekend setbacks are required. With 40-amp resistive ratings per pole, this unit handles high-inrush currents associated with ballast and tungsten loads without premature contact pitting or failure. Key Benefits 4PST configuration allows for simultaneous control of multiple circuits or breaking all legs of a 3-phase system. Integrated minimum 16-hour carryover ensures the master schedule remains accurate through brownouts. Robust NEMA 3R steel enclosure with lockable hasp protects internal components from departmental tampering and environmental hazards. Manual override lever permits immediate circuit switching without disrupting the pre-set 7-day program. Large terminal screws accommodate up to #8 AWG wire, facilitating high-amperage field connections. Common Questions Can the Intermatic T7401BC handle 3-phase motor loads? Yes, the 4PST (Four-Pole, Single-Throw) arrangement is frequently used by technicians to switch all three legs of a 3-phase motor while utilizing the fourth pole for a neutral or auxiliary signal. How do I set different schedules for weekends? The 7-day time dial features distinct sections for every day of the week. You place the trippers at the specific times required for each individual day, allowing for reduced operation or complete shutdowns on Saturdays and Sundays. What happens to the timer during a utility power failure? This model includes a mechanical spring-wound carry-over. Unlike standard timers that stop ticking when the power drops, this unit continues to keep time mechanically, preventing the scheduling drift that leads to midnight calls for system resets. This item is not eligible for free shipping. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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