ATC 305E017A10PX Analog Electromechanical Timer

The ATC 305E017A10PX is a reliable analog electromechanical timer designed for precise on-delay timing applications in industrial control systems. Manufactured by Automatic Timing & Controls (ATC), this device features a user-friendly dial interface for setting intervals from 0 to 60 minutes, making it ideal for processes requiring timed delays such as motor startups, conveyor systems, and automation sequences. Its robust construction ensures durability in harsh environments, with a non-indicating design that focuses on functionality without unnecessary displays. Key benefits include high repeatability, mechanical reliability without reliance on digital components, and easy integration into existing panels via its compact form factor. Compared to modern digital timers, the 305E offers advantages in simplicity and resistance to electrical noise, though it lacks programmability and may require manual adjustments. Drawbacks include potential wear on mechanical parts over time and limited to single-function delay operations. This model operates on 120VAC at 60Hz, with contact ratings up to 10A, suitable for controlling loads like 1/3 HP motors. Commonly used in manufacturing, HVAC, and process control, it provides cost-effective timing solutions with proven performance. Based on visual analysis, this unit appears to be in used but functional condition, possibly new old stock from the 1970s, with no visible damage and included in its original packaging.