Description Specifications Accessories Description A versatile dial-adjustable time delay relay, the ATC 328 provides a choice of ON-delay, OFF-delay or interval operation for any timing period between 50 mSEC and 10 hours-all in the same timer. Based on a unique digital circuit, it features cycle progress annunciation and is suitable for the most demanding industrial service. DESIGNED FOR INDUSTRIAL SERVICE: With a load relay that is rated for 100,000,000 mechanical operations, and power supply that protects circuit components against the voltage transients that are typical of industrial plants, the 328 has a long life expectancy even in tough environments.CYCLE PROGRESS INDICATION:The 328's LED annunciator provides a unique and extremely effective method of cycle progress indication. Off before timing, the LED blinks at an ever-increasing rate as the cycle progresses: once every 3-1/2 seconds during the first 10% of the cycle, twice during the second 10%, and so on. At time-out, the LED stays on constantly, pulsing at a high rate. (in the 1 and 10-second ranges, the LED is off before timing, steady on during timing, and pulsing on after time-out.)VERSATILE MOUNTING:The standard 328 has an 11-pin base which accepts push-on connectors or plugs into a surface-mounted socket. Since all connections are made to the socket, the 328 is readily removed without disturbing the wiring. It is also available with an optional quick-connect plug and brackets for flush panel-mounting.MULTIPLE RANGES REDUCES INVENTORY:Because the 328 has six switch-selected ranges-from 1 SEC to 10 hours-each timer can provide any dial-adjustable timing period between 50 ms and 10 hours--thus greatly reducing inventory requirements especially for large users. The range selector switch knob can be easily removed to prevent unauthorized range change.HIGH ACCURACY:The 328's digital circuit maintains rated accuracy from cycle to cycle, regardless of reset time. Its oscillator-based circuit is also effectively compensated for changes in temperature and voltage and thus achieves excellent overall accuracy.VERSATILE CONTROL CAPABILITY:Every 328 can be used for either ON-Delay, OFF-Delay or interval operation, depending on how its terminal block is wired. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Range: Six Knob Selectable Ranges (1 or 10 SEC/MIN/HRS)Voltage & Frequency:24-240 VAC, 24 VDCArrangement:On-delayFeatures:Standard Literature & Docs Accessories ATC DIN Rail Socket, 000-825-89-00 Was: Now: $19.74 In Stock Add To Cart View More