The NSi Industries TORK 1109A-PC is a professional-grade mechanical timer switch designed for commercial and residential applications requiring reliable automated control. TORK has been a pioneer in the mechanical time switch industry since 1922, and the 1109A-PC continues that legacy with robust construction and proven performance. This outdoor-rated timer allows you to set recurring daily ON/OFF cycles for lights, pumps, signs, HVAC systems, water heaters, and more. The 24-hour dial accommodates up to 12 pairs of trippers (on/off settings) for flexible scheduling throughout the day. The clear polycarbonate cover protects against weather while allowing easy visibility of timer settings without opening the enclosure. Whether you're automating outdoor lighting, controlling irrigation pumps, or managing commercial signage, the TORK 1109A-PC delivers dependable performance day after day.
The TORK 1109A-PC handles heavy-duty applications with its 40-amp capacity and multi-voltage capability. The switch operates on 120V, 208V, or 277V systems, making it compatible with residential single-phase circuits as well as commercial three-phase installations. At 277V, this timer can control large lighting loads, commercial HVAC systems, and industrial equipment. The DPST (Double Pole Single Throw) outputs provide true two-pole switching for safety and compliance. This isn't a light-duty residential timer - it's built for demanding commercial applications where reliability is critical. The robust terminal connections accept #8 to #14 AWG wire for solid, long-lasting electrical connections.
Mechanical timers offer simplicity, reliability, and no-programming ease of use. The 24-hour dial rotates once per day, activating and deactivating connected loads at preset times. Simply clip the included trippers onto the dial at your desired ON and OFF times - the dial does the rest. The 1109A-PC can accommodate up to 12 pairs of trippers (12 ON times and 12 OFF times) for complex scheduling throughout the day. Minimum ON time is 20 minutes; minimum OFF time is 75 minutes. Because it's mechanical rather than digital, this timer continues to run during power outages using its internal motor. Once power is restored, the timer automatically resynchronizes to the correct time. No batteries, no complicated programming menus - just reliable, repeatable daily scheduling.
The TORK 1109A-PC mounts to standard electrical boxes or can be surface-mounted using the included hardware. Clear terminal markings and straightforward wiring make installation simple for licensed electricians. The clear cover allows technicians to verify timer settings and troubleshoot issues without exposing internal components to weather. One of the key advantages of mechanical timers is their serviceability - components can be replaced if they wear out, rather than replacing the entire unit. This reduces waste and saves money over the long term. The mechanical design is also immune to power surges, lightning damage to electronic components, and software glitches that can affect digital timers.
NSi TORK 1109A-PC 24-hour mechanical timer switch! 40A capacity, 120-277V multi-voltage. Outdoor NEMA 3R polycarbonate enclosure with clear lockable cover. DPST outputs, up to 12 ON/OFF cycles daily. Weather-resistant, LED compatible, cULus listed. Brand new sealed!
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