The Intermatic T101R Timer is a foundational 24-hour mechanical time switch designed for high-amperage 120V applications common in HVACR and commercial electrical systems. This heavy-duty mechanical timer features a single pole single throw (SPST) configuration capable of managing resistive loads up to 40 Amps. Built for durability in demanding environments, it is housed in a NEMA 3R rainproof enclosure, making it a reliable solution for outdoor lighting, pool pumps, and compressor control. The mechanical dial supports up to 12 ON/OFF operations per day with 1-hour minimum intervals, utilizing a tripper-based system that remains functional even after years of field service. For technicians performing maintenance or testing, the integrated manual override switch allows for immediate circuit control without disrupting the programmed schedule. This 120V SPST timer is the industry standard for contractors requiring a robust, no-frills automation component that withstands extreme temperature fluctuations from -40°F to 130°F. Key Benefits 40-Amp Capacity: Engineered to handle high-current 120V loads including heaters, 2 HP motors, and industrial lighting without requiring additional contactors. Weatherproof Reliability: The NEMA 3R metal enclosure provides superior protection against rain, snow, and ice, ensuring long-term performance in outdoor installations. Field-Proven Simplicity: Mechanical action eliminates the risk of electronic failures or battery degradation, offering a low-maintenance control solution for remote sites. Manual Override: Includes a manual lever for quick system diagnosis and testing, allowing you to bypass the clock cycle without losing the set program. Common Questions Can this be used for 240V pool pumps? No, this is a 120V SPST timer. For 240V applications, use a DPST model like the T104R to ensure both legs of the circuit are broken. What happens to the timing during a power outage? As a mechanical unit, the clock motor requires a constant 120V supply. After a power failure, the dial must be manually realigned to the current time of day. Can I add more than one ON/OFF cycle? Yes, the unit comes with one set of trippers, but you can install up to 12 pairs of 156T1978A trippers for complex daily schedules. 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.
