Description Specifications Literature Description Easily the most rugged and dependable of industrial percentage timers, the ATC 304 incorporates heavy-duty contacts that are capable of switching loads as large as 4.6 KW directly.Large Contacts: Self-cleaning silver contacts are 3/8 inch in diameter, larger than in any other make of percentage timer. They easily provide 1,000,000 operations at the full rated load of 25 A (non plug-in models).Rugged & Trouble-Free: Every component of the 304 has been refined and improved over the years to provide dependable operation for at least 3,000,000 cycles. Its classic simplicity of design makes it virtually trouble-free.Convenient Adjustment: Graduated in easily read 1% increments, the 304 provides continuous adjustment of on time between 5 and 95%. It also switches the load off continuously when the pointer is set below 3%; and on continuously, when the pointer is set above 98%.Features:Classic designConvenient, continuous adjustmentAvailable in choice of 15, 30, and 60 sec. time cycles. 60 Hz3/8" self cleaning silver contacts State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications General SpecificationsRepeat Accuracy:± 0.1%Range:15 SEC @ 60 Hertz (18 SEC @ 50 Hertz)Contact Ratings:15A at 120 VACDial Calibration:Standard 0 to 100% DialFeatures:Metal Dial - Standard Unit/Non-Plug-InLoad Switch:One SPST (quick make, quick break) switch with self-cleaning heavy-duty silver contacts.Power Requirements:120V, 50/60 Hz; 50 mA running currentTerminals:4 screw terminals accessible at rear; wiring diagram on housing.Temperature Rating:32° to 120°F (0° to 50°C) Literature & Docs Accessories