ATC, 304E-006-A-00-XX, 304E Percentage Timer, Range 30 Sec at 60 Hertz, 120 VAC, Srandart Dial Calibration, Non Plug-in
Features:
- Classic Design
- Convenient, continuous Adjustment
- Comes in 30 second time cycle
- 3/8" self cleaning silver contacts
- Rugged and trouble-free
Applications:
- Ideal for controlling wattage input to electrically heated equipment
- Good for controlling the ratio of on time and off time in a fixed time cycle with other types of electrical equipment
- Providing rate-of-rise set point drive control in ratio and cascade control systems
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 2.4 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.
Rugged and Trouble-Free
Every component of the 304 has been refined and improved over the years to provide dependable operationfor 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%
Operation
The 304 is comes in 30 second time cycle (60 Hz). Its synchronous motor drives a cam which repeatedly closes the SPST load switch for a percentage of the time cycle, as set on the timer dial, and opens it for the remainder of the cycle. When the dial pointer is set below 3%, the load switch stays open for the full cycle; it remains closed when the pointer is set above 98%.
Series 304 timers operate continuously and do not reset on power interruption; when power is restored, they resume the interrupted cycle.
For more information, please see 
Data Sheet
