ATC Series 319 3-Ranger On-Delay Adjustable Timer 319D134

The ATC Series 319 3-Ranger On-Delay Adjustable Timer is a versatile plug-in time delay relay designed for industrial control applications requiring precise timing functions. Manufactured by Automatic Timing & Controls (ATC), this model (319D134) operates on 240 VAC at 50/60 Hz and features three selectable time ranges for flexibility in various automation tasks. It provides an on-delay function, where the output relay activates after a preset delay upon input signal application, making it ideal for motor control, process sequencing, and machinery startup delays in manufacturing, HVAC, and conveyor systems. Key features include an adjustable dial for easy timing setup, an 8-pin octal base for quick installation, and robust construction for reliable performance in harsh environments. Advantages over similar products include its multi-range capability, reducing the need for multiple timers, and high repeatability with low power consumption. However, as an older electromechanical design, it may lack the digital precision and programmability of modern solid-state timers, potentially leading to higher maintenance needs. Benefits include cost-effectiveness for legacy systems and proven durability. Drawbacks involve limited to on-delay mode only and potential obsolescence in parts availability. Based on image analysis, this unit appears used with minor wear on labels and casing, but functional; no visible damage or attached accessories. Estimated market value for used condition is $50-150 USD, based on comparable eBay and industrial surplus listings. For detailed specs, refer to ATC/Marsh Bellofram datasheets (e.g., search 'ATC 319 series datasheet PDF' on manufacturer site).