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. 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. 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%.