Parker Time Delay Relays

Overview

The PARKER PRTC10 is a pneumatic time delay relay designed for off-delay timing applications in industrial and commercial control systems. It operates on an air-actuated timing mechanism, providing a timing range of 0.1 to 30 seconds with a normally open (NO) contact form. The subbase mount configuration allows for clean panel integration and straightforward wiring access. This relay is installed by licensed electricians and HVAC controls technicians working on automated sequencing, fan shutdown delays, and process control circuits where a timed output shutoff is required after the input signal is removed. The PRTC10 fits control panel and equipment applications where pneumatic timing logic is preferred over electronic timers, particularly in environments where electromagnetic interference is a concern. Its two-pin contact configuration keeps wiring simple, making it a practical choice for retrofit and new-installation control panels in light industrial, commercial HVAC, and building automation contexts. The subbase mount style is standard in many relay panel assemblies, allowing the relay body to be swapped without disturbing field wiring. Key Features Off-delay timing function holds the output closed for a set period after the input signal is removed Timing range of 0.1 to 30 seconds covers a wide range of sequencing applications Pneumatic timing mechanism provides reliable operation in electrically noisy environments Normally open (NO) contact form for standard control…