ATC Series 328 Time Delay Relay 328C200Q10XX

The ATC Series 328 Time Delay Relay, model 328C200Q10XX, is a versatile multi-range plug-in relay designed for precise timing control in industrial automation and process control applications. Manufactured by Automatic Timing & Controls, this device offers adjustable delay functions including on-delay, off-delay, and interval timing modes, making it ideal for applications such as motor control, conveyor systems, and HVAC equipment. Key features include a user-friendly dial for time setting, multiple range selection via a top knob (e.g., from 0.3 seconds to 3 hours across six ranges), and robust construction for reliable operation in demanding environments. Advantages over similar products include its plug-in design for easy installation and replacement, high repeatability with ±2% accuracy, and compatibility with standard octal sockets. Drawbacks may include its electromechanical nature, which could be less durable in high-vibration settings compared to solid-state alternatives, and the need for manual range switching. This unit operates on 120V AC at 50/60 Hz and is rated for 7A resistive loads. Based on visual analysis, the relay appears used but in good condition with minimal wear, no visible damage, and intact labeling. It provides cost-effective timing solutions for legacy systems, with proven reliability in industrial settings.